ERC-721
Overview
Max Total Supply
70 KAFO
Holders
56
Market
Volume (24H)
N/A
Min Price (24H)
N/A
Max Price (24H)
N/A
Other Info
Token Contract
Balance
1 KAFOLoading...
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# | Exchange | Pair | Price | 24H Volume | % Volume |
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Contract Name:
KillerAcidFunOriginals
Compiler Version
v0.8.18+commit.87f61d96
Optimization Enabled:
Yes with 1000000 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity Standard Json-Input format)
// MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM // MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM // MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM // MMMMMMMMMMMMMMMMMMNOdxXMMMMMMMMNOdlloxXMMMXxooxXMMMXxokNMXOxoxXMMMMNOxoodkXW0xkKMMKxdONKxddddddddONMMMMMMMMMMMMMMMMMM // MMMMMMMMMMMMMMMMMM0' dMMMMMMNx, ...kMMWd oWMMx. ,KMO:. .kMWKl' ...dN: lWWl '0x. . ;0MMMMMMMMMMMMMMMMMM // MMMMMMMMMMMMMMMMMM0' dMMMMMNo. .cOK00WMMK; ,KMMd ,KMOc. .kWk. .lk00OXN: .;;. '0N00k' :00KWMMMMMMMMMMMMMMMMMM // MMMMMMMMMMMMMMMMMM0' dMMMMMO. cNMMMMMMMx. .. oWMd ,KMOl. .x0' 'OMWNXNWN: ... '0MMMX; oMMMMMMMMMMMMMMMMMMMMMM // MMMMMMMMMMMMMMMMMM0' dMMMMMk. cWMMMMMMX; ', '0Md '0Mk:. .kO. ;XM0:.;ON: :XXc '0MMMX; oMMMMMMMMMMMMMMMMMMMMMM // MMMMMMMMMMMMMMMMMM0' dMMMMMK; .dXWWNWMx. lWO. :k; ,KNl ,dc. .kN: cWWl '0MMMX; oMMMMMMMMMMMMMMMMMMMMMM // MMMMMMMMMMMMMMMMMM0' dMMMMMMKc. .,,;OX; :xkl. .ONo. .xWMNx, .kWc cWWl '0MMMX; oMMMMMMMMMMMMMMMMMMMMMM // MMMMMMMMMMMMMMMMMMXdcl0MMMMMMMW0dc;;;c0Xo:lKMMNxcl0MWOoc:clo0WMMMMNOdc::cxXWOlcOWM0lcdXMMMNxcl0MMMMMMMMMMMMMMMMMMMMMM // MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM // MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM // MMMMMMWklclOWMMMMMMMMMMWKxlcclkNMWKdc:clkNMM0olxXMXxlo0XxoooooooooxXXxooooodx0WMMMNklcl0MMMMMW0dlcclkN0dooooooookNMMM // MMMMMM0' ,KMMMMMMMMMKc. ...:XNo. . :XWl ;KO. oO,... ..'Ok. ... .cXMMO. ;XMMM0:. ...cXd... ..cXMMM // MMMMMWo oWMMMMMMMK; 'xXXKXWo .dKo. oWl ;d. oWXKK0: ,0KKWk. .dX0: .kMWl .xMM0' 'kXXKXMNKKk' lKKXWMMM // MMMMMK, .'. ,KMMMMMMMo .xMMMMMK, lWMK, cNl . oMMMMWl :NMMMk. ':,. ;KM0' .'. ;KWl .kMMMMMMMMMK, dMMMMMMM // MMMMWo .,. oWMMMMMWl .xMMMMM0' oMM0' oWl oMMMMWl :NMMMk. .. :KMWo .,. dNc .kMMMMMMMMMK, dMMMMMMM // MMMMK, '0MMMMMMO. 'kXNXNNc 'xx, '0Wl ;o. oMMMMWl :NMMMk. .xO' cNM0' ,Kk. ,kXNXNMMMMK, dMMMMMMM // MMMWd 'xOk; lWMMMMMWO;. .'.:KK: 'OWWl ;XO' oMMMMWl :NMMMk. .OWx. .xWo ,kOk, oNk, .'.cXMMMK, dMMMMMMM // MMMWkccOWMMKolkNMMMMMMMW0dc::cdXMNkl::cxXMMMOllkWM0oll0MMMMWOolOWMMMXdldXMNkllkNkclOMMM0olkWMNOdc::cxXMMMNkloKMMMMMMM // MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM // MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM // MMMMMMMMMNkodKMWOllkNKolxXMMMWKxocccdKWOod0MM0olxNMMMMWOlccccccccoKKdlllllodONMMMXxc::co0WMXdloOWMMMMM0olokNMMMMMMMMM // MMMMMMMMMK, oNX: ,Kd. '0MWO:. ....xN: lNXc '0MMMMWc .....,Ox. ... cXWk' .. .xWO. .xWMMMO' ,KMMMMMMMMM // MMMMMMMMMK, .'. ,Kd '0Wd. ,xKXXKNN: .'.. '0MMMMWc 'xO0KKXWk. .xX0: .kO. cK0, ,KO. .xWWO' ,KMMMMMMMMM // MMMMMMMMMX; .;,. ,Kd '0O. ,KMWK0KNN: .,,. '0MMMMWc ..cKMMMk. ';'. :Ko '0MMd .OO. .ox. ,KMMMMMMMMM // MMMMMMMMMX; oWN: ,Kd '0O. ,KMO,.'ON: cWWc '0MMMMWc .::dXMMMk. .. cXWo ,KMNc ,KO. .. ;, ,KMMMMMMMMM // MMMMMMMMMX; oMN: ,Kd '0No. .c: .kN: lWWc '0MMMMWc :NMMMMMMk. .O0' cNMO. ckc. .dWO. ox. cXo ,KMMMMMMMMM // MMMMMMMMMN: oMNc ,Kd '0MNk;. .ONc lWWl '0MMMMWc :NMMMMMMk. .OWx. .dWWx. .oNMO. dWO,.oNMo ,KMMMMMMMMM // MMMMMMMMMWOddKMW0ddONKxdkNMMMWKkdoodONW0dd0MM0ddkNMMMMWOoooOWMMMMMMXxoxXMWOooOWMMKxlcld0WMMXkdxKMMXKWMMKddONMMMMMMMMM // MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM // MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM // MMMMMMMMMMMMMMMMMMMMMMMMMMM0lcoXWOlclOWNxclOWOc:xWMMMMMXo::lKMMMMMWk::ccccc:xNXdccccccokXMMMMMMMMMMMMMMMMMMMMMMMMMMMM // MMMMMMMMMMMMMMMMMMMMMMMMMMMd .xo. cXMX; oWl :NMMMMMO. .kMMMMMWc .....lN0' .'.. ,0MMMMMMMMMMMMMMMMMMMMMMMMMMM // MMMMMMMMMMMMMMMMMMMMMMMMMMMo . ,KMMX; oWl :NMMMMMO. .kMMMMMN: ;kO0XXNW0' oNKc dMMMMMMMMMMMMMMMMMMMMMMMMMMM // MMMMMMMMMMMMMMMMMMMMMMMMMMMd .dWMX; oWc :NMMMMMk. .OMMMMMN: ..:KMMM0' .'.. ,0MMMMMMMMMMMMMMMMMMMMMMMMMMM // MMMMMMMMMMMMMMMMMMMMMMMMMMMd ,kd. '0MX; oWc cNMMMMMk. .OMMMMMN: .ccdXMMM0' .' ;KMMMMMMMMMMMMMMMMMMMMMMMMMMMM // MMMMMMMMMMMMMMMMMMMMMMMMMMMd .OMNc cNX; oN: ,kOOO0Nk. .oOOOOXN: ;OOOOO0N0' .xX: ,KMMMMMMMMMMMMMMMMMMMMMMMMMMMM // MMMMMMMMMMMMMMMMMMMMMMMMMMMd .OMMO. .xX; oN: 'Ox. oX: .x0' .xM0' lNMMMMMMMMMMMMMMMMMMMMMMMMMMM // MMMMMMMMMMMMMMMMMMMMMMMMMMMKxdkNMMW0xx0W0dxKWOdddddddxXXxdddddddd0WOdddddddddKNkdxXMM0ddONMMMMMMMMMMMMMMMMMMMMMMMMMMM // MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM // MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMWMMMMMMMMMMWWWWMMMMMMMMMMMWWMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM // MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMXo,,;OMMMMMXxc,',,;xNKl:oKXo,,,;:lONMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM // MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMx. ;XMMWx' .;;,,dWk. .O0' ... ;0MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM // MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMX: .dWWx. cXMMWWWMk. .OO. .ONO; :NMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM // MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMk. .;. ,KN: '0MMMMMMMk. .OO. '0MMk. '0MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM // MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMN: .. dN: .kMMMMMMMk. .OO. '0MWd. ,KMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM // MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMk. ... ,Kk. 'd00OOXMk. .OO. .oxc. .xWMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM // MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMNc cKX0; oW0c. :Xk. .OO. .,kWMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM // MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMWOdxXMMMXkkKWMWXOdoodd0NNOkONNkdddxk0NMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM // MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM // MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMWWWWWWWWWWMMWWWWMMMWWWMMWWWMMMMWWMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM // MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMNo,,,,,,,,lXk,,,dWMk;'lX0:,;xNWd,,oNMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM // MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMX; .,;,,,oXl cNMd '0x. .oX: ;XMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM // MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMX; ;kOKWWWNc cWMx. '0x. .:, ;XMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM // MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMX; cNMMN: cNMx. '0k. ;XMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM // MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMX; ,odOWMMWl ,KWl ,Kk. .. ;XMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM // MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMNO0WX; oMMMMMMMk. ,;. lWk. .xl ;XMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM // MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMWd.'0X; dMMMMMMMWx'.. .lXMk. .ONd. :XMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM // MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMXO0WW0kkXMMMMMMMMMNK0kkOXWMMNOkONMWKkkKWMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM // MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMWWWWWMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM // MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMWXKK0KXNWMMMMMMMMMMMMMMMMMMMMMMWKxo:,'''';:lx0XWMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM // MMMMMMMMMMMMMMMMMMMMMMMMMMW0dc;'.......,:ldOXWMMMMMMMMMMMMMMWk;. .;oOXMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM // MMMMMMMMMMMMMMMMMMMMMMMMWO;. .;lkNMMMMMMMMMMMk. ':cclc:;'. .:xNMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM // MMMMMMMMMMMMMMMMMMMMMMMMO. .;codxxxdoc;'. 'l0WMMMMMMMWl .xNMN0OO0KNXOd:. 'xNMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM // MMMMMMMMMMMMMMMMMMMMMMMN: .dKKkollox0NMMN0d:. .c0WMMMMMN: lWMXc. ..;dXWWXd' ,kNMMMMMMMMMMMMMMMMMMMMMMMMMMMM // MMMMMMMMMMMMMMMMMMMMMMMK, .OWk' ... .,kNMMMWK: .oxdoddl. lWMO. ;xd' .oXMMXd. cXMMMMMMMMMMMMMMMMMMMMMMMMMMM // MMMMMMMMMMMMMMMMMMMMMMM0' cNK, ;0Nd. cXMMMMXc lWMK, :NMx. ;0MMW0; ,OWMMMMMMMMMMMMMMMMMMMMMMMMM // MMMMMMMMMMMMMMMMMMMMMMM0' oMK, :NM0' ;0MMMM0' lWMX; ;XMk. :XMMMX; .kWMMMMMMMMMMMMMMMMMMMMMMMM // MMMMMMMMMMMMMMMMMMMMMMMO. oWWc .OMNc ,0MMMX; .:::' cWMX; ;XMO. .kMMMMk. .kWMMMMMMMMMMMMMMMMMMMMMMM // MMMMMMMMMMMMMMMMMMMMMMMk. cNMx. oWMd cNMMN: .dXWMM0' cWMX; ,KMO. lWMMMX; '0MMMMMMMMMMMMMMMMMMMMMMM // MMMMMMMMMMMMMMMMMMMMMMMx. ,KMX; ,OKo. ;XMM0' .xWMMMM0' oWMWo .;oc. .OMMMWl ;XMMMMMMMMMMMMMMMMMMMMMM // MMMMMMMMMMMMMMMMMMMMMWXl '0MWk. ... ...'xWMMx. :XMMMMMNo ,0MMMNx:'. dMMMWl cNMMMMMMMMMMMMMMMMMMMMM // MMMMMMMMMMMMMMMMMMMNk:. cXMMMXkdxkOO00KKNMMMMXd:oKMMMMMMMN0OXMMMMMMMWX0kdc,''cKMMWx. .dWMMMMMMMMMMMMMMMMMMMM // MMMMMMMMMMMMMMMMMMNl. .:xXMMMMMMMMMMMMMMMWX00NMMMMMMMMMMMMMMMMMMMMMMMMMWXNWWWWMMMWd. '0MMMMMMMMMMMMMMMMMMMM // MMMMMMMMMMMMMMMMMNl .xNWMMMMMMMMMMMMMMMMKc. ,OMMMMMMMMMMMMMMMMMMMMMMWk,..oNMMMMWd. lNMMMMMMMMMMMMMMMMMMM // MMMMMMMMMMMMMMMMWd. .lXMMMMMMMWNXKKXXWMX; lWMMMMMMMWWNK0OOO0KNWMMO. .OMMMMX; .oWMMMMMMMMMMMMMMMMMM // MMMMMMMMMMMMMMMM0' .xMMMW0dc,......'::. oWMMMWKxc;''''''''.';lx: .xMMMMW0occldxxo;. .kMMMMMMMMMMMMMMMMMM // MMMMMMMMMMMMMMMWo .;xNMKo,..,ldxkkkdl;. .xMMWO:.'cdxk0KXXXKOxl,. dMMMMMMMMMMMMMMWK: :NMMMMMMMMMMMMMMMMM // MMMMMMMMMMMMMMMX; :0WMXo. ,dKWMMMMMMMMWXx, .xMXl.'xXMMMMMMMMMMMMMWO: dMMMMMMMMMMMMMMMM0' .OMMMMMMMMMMMMMMMMM // MMMMMMMMMMMMMMMO. lNMK; ;dxxxddoolllcccc;. .kNl .lxxxkkkkkkkkkkOOO0Oc dMMMMMMMMMMMMMMMMX; oMMMMMMMMMMMMMMMMM // MMMMMMMMMMMMMMMk. oXc .'''. .'. .xk. .. ... .... oWMMMMMMMMMMMMMMMX; :NMMMMMMMMMMMMMMMM // MMMMMMMMMMMMMMMx. ;k, :k: :kkd' lXNk. '0d 'kO; .cxxd' .oOOk: .oNMMMMMMMMMMMMMMK, ,KMMMMMMMMMMMMMMMM // MMMMMMMMMMMMMMMx. .x0' oMXl. 'xNMWo lWx.'0MK:. .... .xWMMN: ;0MMMMNkdodxkOkc. lNMMMMMMMMMMMMMMMM // MMMMMMMMMMMMMMMx. 'kWNc ,KMW0o:;'';coONMMNd. :KMK, cXMW0oc;'....;oKWMMWd. ;XMM0; .kMMMMMMMMMMMMMMMMM // MMMMMMMMMMMMMMMx. ,KMMM0, ,OWMMMWWWWMMMMNk; .oXWX0l. 'lxOKNNNXKKXWMMMWKc. .,cOWMM0' ;KMMMMMMMMMMMMMMMM // MMMMMMMMMMMMMMMO. ;0XNMMKc..:x0XNWWNX0kl'..cddc,.. ..,cd0KKXKOd:. .;lxKWMMMMMWx. .. .dNMMMMMMMMMMMMMM // MMMMMMMMMMMMMWKl. .,',cONW0; ..''''.. .:lc;. .;loxkkOOkdl:,. .... .,;l0MMMMMMMWO, .c: ,kWMMMMMMMMMMMM // MMMMMMMMMMMMXl';dOKKOo..ck0Oc'.....,;loo:. 'lkXMMMMMMMMMMMMWKx:. .,kMMMMMMMMMK; .xNk' .oNMMMMMMMMMMM // MMMMMMMMMMM0,.dNNkllkXO. .'l0XXXXNXkl'..ckNMMMMMMMMMMMMMMMMMMWKl. .lxxkOKNMMMMMMMMMMM0' .'';xNMM0' .dMMMMMMMMMMM // MMMMMMMMMMK,.xWK:.,'.lX: cXXOd:'..:xXMMMMMMMMMMMMMMMMMMMMMMMWKc. lNMMMMMMMMMMMMMMMMWd. ,0WNWWXkl' ,OMMMMMMMMMMM // MMMMMMMMMMd ;XWl.lNk.;0: ....;ok0xokNMMMMMMMMMMMMMMMMMMNOxxKWNl ':oxOKNMMMMMMMMMMMK, .OMWO;. 'ckNMMMMMMMMMMMM // MMMMMMMMMMo ;XX;.dk;.ox. .',cok0NWMMO'.cXMMMMMMMMMMMMMMW0xl'. '0MX; .'lXMMMMMMMMMWo dMNc ,0MMMMMMMMMMMMMMM // MMMMMMMMMMk..OWO:,,;do..cOXNWMM0l:kWMWKOKWMMMMMMMMMMMNOo,. .cl. dMMx. '0MWK0OO0KNWO. ;XMXd, ,0MMMMMMMMMMMMMM // MMMMMMMMMMNl.'xXNKkd;..xWMMMMMMO;,dNMMk,'oXMMMMMWNOdc' .:d0Wd .kMMO. .c0WO;. ..,;. ,KMMMNo. ,0MMMMMMMMMMMMM // MMMMMMMMMMMNk,..''. .dMMMMMMMMMWWMMMMO:;xNWX0ko;. .,'...':. ;XMMk. .lKWMN: ,kWMMMMWd. 'OWMMMMMMMMMMM // MMMMMMMMMMMMMN0kkxl' .coxk0KXXXXK00Okxdol:,.. .. .dNNKxl;. .kMMNc .c0WMMMWk. .OMMMMMMWKl. .OMMMMMMMMMMM // MMMMMMMMMMMMMMMMMMMNOo:'. ....... ,k0KOc..lXMMMWO; .xWWx. ,OWMMMMMMM0; '0Nklc:;'.. ;0MMMMMMMMMMM // MMMMMMMMMMMMMMMMMMMMMMXl. .;lxd:. .,cl:,','. ,KMMMWx. cXMMMMX: 'Ox. .oNMMMMMMMMMMX: ..:OWd ':lodONMMMMMMMMMMMM // MMMMMMMMMMMMMMMMMMMMWk' ,dXWWO,.'lOXNk,... :x; 'xWMMWk. lNMMMMO. .. .kWMMMMMMMMMMMM0' lKNWMMKl. ,xNMMMMMMMMMMMMMMMM // MMMMMMMMMMMMMMMMMMMM0' ,KMMMK, :XMMWd..dKd..cd. .oNMMWl .OMMMMX; :KMMMMMMMMMMMMMMWl lWMMMMMMXx; ;0WMMMMMMMMMMMMMM // MMMMMMMMMMMMMMMMMMMMx. ,KMMMNl .:llc. .,'. .OMMMk. dMMMMX; .xNMMMMMMMMMMMMMMMMx. :NMMMMMMMMNx. 'OMMMMMMMMMMMMMM // MMMMMMMMMMMMMMMMMMMMK, 'dKWMNkl:;;::cloddxkkl. dMMMO. oWWMM0' lWMMMMMWX0OOOOO00Od, .dWMMMNXKK0ko' dMMMMMMMMMMMMMM // MMMMMMMMMMMMMMMMMMMMMO' .;lxOKXNWWMMMWWWWNNXo. dMMM0' lNWMWd .OMMMMMKc. .dWMNk:'... .,dXMMMMMMMMMMMMMM // MMMMMMMMMMMMMMMMMMMMMMXo' ..',,;;;,,'''... .xMMMO. oWWMK, cNMMMMWl 'kWO. .codkOKWMMMMMMMMMMMMMMMM // MMMMMMMMMMMMMMMMMMMMMMMMNk; .kMMMx..OMMNl 'OMMMMMM0:. .ONx, 'xNMMMMMMMMMMMMMMMMMMMM // MMMMMMMMMMMMMMMMMMMMMMMMMMNd. ,lxkkxl, .xMMMKdOWMNo..xWMMMMMMMW0c. .lXMMNO, .dWMMMMMMMMMMMMMMMMMMM // MMMMMMMMMMMMMMMMMMMMMMMMMMMWO' :XMMMMMMNk' ,0MMMMW0x:..dWMMMMMMMMMMWk' .;odxOXWMMMWNl lWMMMMMMMMMMMMMMMMMMM // MMMMMMMMMMMMMMMMMMMMMMMMMMMMMK: '0MMMMMMMMK; .cool;. .;OWMMMMMMMMMMMMMk. .ckkkxdol:;,. ,0MMMMMMMMMMMMMMMMMMMM // MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMNo. :XMMMMMMMMK, .cx0WMMMMMMMMMMMMMMMNc ...',;cokXMMMMMMMMMMMMMMMMMMMMM // MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMWx. ;0WMMMMMMM0; cNMMMMMMMMMMMMMMMMMMX; .dkkOO0KXNWMMMMMMMMMMMMMMMMMMMMMMMMMM // MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMWO, .cONMMMMMMNx;...'lXMMMMMMMMMMMMMMMWXOo, cOXWMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM // MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMN0kdc. 'cxKNWWWWNK00KXXKK00Okkxdoolc:;'. .cKMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM // MMMMMMMMMMMMMMMMMMMMMMMMMMMMXo'. ..',,,,'''...... ;0MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM // MMMMMMMMMMMMMMMMMMMMMMMMMMMMXo,'....',,;::cccccccccllllllooooooooooooollllllllllodONMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM // MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMWNXXXNWWWMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM // MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM // MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM // MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM // MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM // SPDX-License-Identifier: MIT pragma solidity 0.8.18; import {Originals} from "./Originals.sol"; contract KillerAcidFunOriginals is Originals { constructor() Originals("KillerAcid.fun Originals", "KAFO") {} }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.8.0) (access/AccessControl.sol) pragma solidity ^0.8.0; import "./IAccessControl.sol"; import "../utils/Context.sol"; import "../utils/Strings.sol"; import "../utils/introspection/ERC165.sol"; /** * @dev Contract module that allows children to implement role-based access * control mechanisms. This is a lightweight version that doesn't allow enumerating role * members except through off-chain means by accessing the contract event logs. Some * applications may benefit from on-chain enumerability, for those cases see * {AccessControlEnumerable}. * * Roles are referred to by their `bytes32` identifier. These should be exposed * in the external API and be unique. The best way to achieve this is by * using `public constant` hash digests: * * ``` * bytes32 public constant MY_ROLE = keccak256("MY_ROLE"); * ``` * * Roles can be used to represent a set of permissions. To restrict access to a * function call, use {hasRole}: * * ``` * function foo() public { * require(hasRole(MY_ROLE, msg.sender)); * ... * } * ``` * * Roles can be granted and revoked dynamically via the {grantRole} and * {revokeRole} functions. Each role has an associated admin role, and only * accounts that have a role's admin role can call {grantRole} and {revokeRole}. * * By default, the admin role for all roles is `DEFAULT_ADMIN_ROLE`, which means * that only accounts with this role will be able to grant or revoke other * roles. More complex role relationships can be created by using * {_setRoleAdmin}. * * WARNING: The `DEFAULT_ADMIN_ROLE` is also its own admin: it has permission to * grant and revoke this role. Extra precautions should be taken to secure * accounts that have been granted it. */ abstract contract AccessControl is Context, IAccessControl, ERC165 { struct RoleData { mapping(address => bool) members; bytes32 adminRole; } mapping(bytes32 => RoleData) private _roles; bytes32 public constant DEFAULT_ADMIN_ROLE = 0x00; /** * @dev Modifier that checks that an account has a specific role. Reverts * with a standardized message including the required role. * * The format of the revert reason is given by the following regular expression: * * /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/ * * _Available since v4.1._ */ modifier onlyRole(bytes32 role) { _checkRole(role); _; } /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { return interfaceId == type(IAccessControl).interfaceId || super.supportsInterface(interfaceId); } /** * @dev Returns `true` if `account` has been granted `role`. */ function hasRole(bytes32 role, address account) public view virtual override returns (bool) { return _roles[role].members[account]; } /** * @dev Revert with a standard message if `_msgSender()` is missing `role`. * Overriding this function changes the behavior of the {onlyRole} modifier. * * Format of the revert message is described in {_checkRole}. * * _Available since v4.6._ */ function _checkRole(bytes32 role) internal view virtual { _checkRole(role, _msgSender()); } /** * @dev Revert with a standard message if `account` is missing `role`. * * The format of the revert reason is given by the following regular expression: * * /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/ */ function _checkRole(bytes32 role, address account) internal view virtual { if (!hasRole(role, account)) { revert( string( abi.encodePacked( "AccessControl: account ", Strings.toHexString(account), " is missing role ", Strings.toHexString(uint256(role), 32) ) ) ); } } /** * @dev Returns the admin role that controls `role`. See {grantRole} and * {revokeRole}. * * To change a role's admin, use {_setRoleAdmin}. */ function getRoleAdmin(bytes32 role) public view virtual override returns (bytes32) { return _roles[role].adminRole; } /** * @dev Grants `role` to `account`. * * If `account` had not been already granted `role`, emits a {RoleGranted} * event. * * Requirements: * * - the caller must have ``role``'s admin role. * * May emit a {RoleGranted} event. */ function grantRole(bytes32 role, address account) public virtual override onlyRole(getRoleAdmin(role)) { _grantRole(role, account); } /** * @dev Revokes `role` from `account`. * * If `account` had been granted `role`, emits a {RoleRevoked} event. * * Requirements: * * - the caller must have ``role``'s admin role. * * May emit a {RoleRevoked} event. */ function revokeRole(bytes32 role, address account) public virtual override onlyRole(getRoleAdmin(role)) { _revokeRole(role, account); } /** * @dev Revokes `role` from the calling account. * * Roles are often managed via {grantRole} and {revokeRole}: this function's * purpose is to provide a mechanism for accounts to lose their privileges * if they are compromised (such as when a trusted device is misplaced). * * If the calling account had been revoked `role`, emits a {RoleRevoked} * event. * * Requirements: * * - the caller must be `account`. * * May emit a {RoleRevoked} event. */ function renounceRole(bytes32 role, address account) public virtual override { require(account == _msgSender(), "AccessControl: can only renounce roles for self"); _revokeRole(role, account); } /** * @dev Grants `role` to `account`. * * If `account` had not been already granted `role`, emits a {RoleGranted} * event. Note that unlike {grantRole}, this function doesn't perform any * checks on the calling account. * * May emit a {RoleGranted} event. * * [WARNING] * ==== * This function should only be called from the constructor when setting * up the initial roles for the system. * * Using this function in any other way is effectively circumventing the admin * system imposed by {AccessControl}. * ==== * * NOTE: This function is deprecated in favor of {_grantRole}. */ function _setupRole(bytes32 role, address account) internal virtual { _grantRole(role, account); } /** * @dev Sets `adminRole` as ``role``'s admin role. * * Emits a {RoleAdminChanged} event. */ function _setRoleAdmin(bytes32 role, bytes32 adminRole) internal virtual { bytes32 previousAdminRole = getRoleAdmin(role); _roles[role].adminRole = adminRole; emit RoleAdminChanged(role, previousAdminRole, adminRole); } /** * @dev Grants `role` to `account`. * * Internal function without access restriction. * * May emit a {RoleGranted} event. */ function _grantRole(bytes32 role, address account) internal virtual { if (!hasRole(role, account)) { _roles[role].members[account] = true; emit RoleGranted(role, account, _msgSender()); } } /** * @dev Revokes `role` from `account`. * * Internal function without access restriction. * * May emit a {RoleRevoked} event. */ function _revokeRole(bytes32 role, address account) internal virtual { if (hasRole(role, account)) { _roles[role].members[account] = false; emit RoleRevoked(role, account, _msgSender()); } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (access/IAccessControl.sol) pragma solidity ^0.8.0; /** * @dev External interface of AccessControl declared to support ERC165 detection. */ interface IAccessControl { /** * @dev Emitted when `newAdminRole` is set as ``role``'s admin role, replacing `previousAdminRole` * * `DEFAULT_ADMIN_ROLE` is the starting admin for all roles, despite * {RoleAdminChanged} not being emitted signaling this. * * _Available since v3.1._ */ event RoleAdminChanged(bytes32 indexed role, bytes32 indexed previousAdminRole, bytes32 indexed newAdminRole); /** * @dev Emitted when `account` is granted `role`. * * `sender` is the account that originated the contract call, an admin role * bearer except when using {AccessControl-_setupRole}. */ event RoleGranted(bytes32 indexed role, address indexed account, address indexed sender); /** * @dev Emitted when `account` is revoked `role`. * * `sender` is the account that originated the contract call: * - if using `revokeRole`, it is the admin role bearer * - if using `renounceRole`, it is the role bearer (i.e. `account`) */ event RoleRevoked(bytes32 indexed role, address indexed account, address indexed sender); /** * @dev Returns `true` if `account` has been granted `role`. */ function hasRole(bytes32 role, address account) external view returns (bool); /** * @dev Returns the admin role that controls `role`. See {grantRole} and * {revokeRole}. * * To change a role's admin, use {AccessControl-_setRoleAdmin}. */ function getRoleAdmin(bytes32 role) external view returns (bytes32); /** * @dev Grants `role` to `account`. * * If `account` had not been already granted `role`, emits a {RoleGranted} * event. * * Requirements: * * - the caller must have ``role``'s admin role. */ function grantRole(bytes32 role, address account) external; /** * @dev Revokes `role` from `account`. * * If `account` had been granted `role`, emits a {RoleRevoked} event. * * Requirements: * * - the caller must have ``role``'s admin role. */ function revokeRole(bytes32 role, address account) external; /** * @dev Revokes `role` from the calling account. * * Roles are often managed via {grantRole} and {revokeRole}: this function's * purpose is to provide a mechanism for accounts to lose their privileges * if they are compromised (such as when a trusted device is misplaced). * * If the calling account had been granted `role`, emits a {RoleRevoked} * event. * * Requirements: * * - the caller must be `account`. */ function renounceRole(bytes32 role, address account) external; }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.7.0) (access/Ownable.sol) pragma solidity ^0.8.0; import "../utils/Context.sol"; /** * @dev Contract module which provides a basic access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * By default, the owner account will be the one that deploys the contract. This * can later be changed with {transferOwnership}. * * This module is used through inheritance. It will make available the modifier * `onlyOwner`, which can be applied to your functions to restrict their use to * the owner. */ abstract contract Ownable is Context { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev Initializes the contract setting the deployer as the initial owner. */ constructor() { _transferOwnership(_msgSender()); } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { _checkOwner(); _; } /** * @dev Returns the address of the current owner. */ function owner() public view virtual returns (address) { return _owner; } /** * @dev Throws if the sender is not the owner. */ function _checkOwner() internal view virtual { require(owner() == _msgSender(), "Ownable: caller is not the owner"); } /** * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. */ function renounceOwnership() public virtual onlyOwner { _transferOwnership(address(0)); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. */ function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); _transferOwnership(newOwner); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Internal function without access restriction. */ function _transferOwnership(address newOwner) internal virtual { address oldOwner = _owner; _owner = newOwner; emit OwnershipTransferred(oldOwner, newOwner); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.8.0) (token/ERC721/ERC721.sol) pragma solidity ^0.8.0; import "./IERC721.sol"; import "./IERC721Receiver.sol"; import "./extensions/IERC721Metadata.sol"; import "../../utils/Address.sol"; import "../../utils/Context.sol"; import "../../utils/Strings.sol"; import "../../utils/introspection/ERC165.sol"; /** * @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including * the Metadata extension, but not including the Enumerable extension, which is available separately as * {ERC721Enumerable}. */ contract ERC721 is Context, ERC165, IERC721, IERC721Metadata { using Address for address; using Strings for uint256; // Token name string private _name; // Token symbol string private _symbol; // Mapping from token ID to owner address mapping(uint256 => address) private _owners; // Mapping owner address to token count mapping(address => uint256) private _balances; // Mapping from token ID to approved address mapping(uint256 => address) private _tokenApprovals; // Mapping from owner to operator approvals mapping(address => mapping(address => bool)) private _operatorApprovals; /** * @dev Initializes the contract by setting a `name` and a `symbol` to the token collection. */ constructor(string memory name_, string memory symbol_) { _name = name_; _symbol = symbol_; } /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) { return interfaceId == type(IERC721).interfaceId || interfaceId == type(IERC721Metadata).interfaceId || super.supportsInterface(interfaceId); } /** * @dev See {IERC721-balanceOf}. */ function balanceOf(address owner) public view virtual override returns (uint256) { require(owner != address(0), "ERC721: address zero is not a valid owner"); return _balances[owner]; } /** * @dev See {IERC721-ownerOf}. */ function ownerOf(uint256 tokenId) public view virtual override returns (address) { address owner = _ownerOf(tokenId); require(owner != address(0), "ERC721: invalid token ID"); return owner; } /** * @dev See {IERC721Metadata-name}. */ function name() public view virtual override returns (string memory) { return _name; } /** * @dev See {IERC721Metadata-symbol}. */ function symbol() public view virtual override returns (string memory) { return _symbol; } /** * @dev See {IERC721Metadata-tokenURI}. */ function tokenURI(uint256 tokenId) public view virtual override returns (string memory) { _requireMinted(tokenId); string memory baseURI = _baseURI(); return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : ""; } /** * @dev Base URI for computing {tokenURI}. If set, the resulting URI for each * token will be the concatenation of the `baseURI` and the `tokenId`. Empty * by default, can be overridden in child contracts. */ function _baseURI() internal view virtual returns (string memory) { return ""; } /** * @dev See {IERC721-approve}. */ function approve(address to, uint256 tokenId) public virtual override { address owner = ERC721.ownerOf(tokenId); require(to != owner, "ERC721: approval to current owner"); require( _msgSender() == owner || isApprovedForAll(owner, _msgSender()), "ERC721: approve caller is not token owner or approved for all" ); _approve(to, tokenId); } /** * @dev See {IERC721-getApproved}. */ function getApproved(uint256 tokenId) public view virtual override returns (address) { _requireMinted(tokenId); return _tokenApprovals[tokenId]; } /** * @dev See {IERC721-setApprovalForAll}. */ function setApprovalForAll(address operator, bool approved) public virtual override { _setApprovalForAll(_msgSender(), operator, approved); } /** * @dev See {IERC721-isApprovedForAll}. */ function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) { return _operatorApprovals[owner][operator]; } /** * @dev See {IERC721-transferFrom}. */ function transferFrom( address from, address to, uint256 tokenId ) public virtual override { //solhint-disable-next-line max-line-length require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: caller is not token owner or approved"); _transfer(from, to, tokenId); } /** * @dev See {IERC721-safeTransferFrom}. */ function safeTransferFrom( address from, address to, uint256 tokenId ) public virtual override { safeTransferFrom(from, to, tokenId, ""); } /** * @dev See {IERC721-safeTransferFrom}. */ function safeTransferFrom( address from, address to, uint256 tokenId, bytes memory data ) public virtual override { require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: caller is not token owner or approved"); _safeTransfer(from, to, tokenId, data); } /** * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients * are aware of the ERC721 protocol to prevent tokens from being forever locked. * * `data` is additional data, it has no specified format and it is sent in call to `to`. * * This internal function is equivalent to {safeTransferFrom}, and can be used to e.g. * implement alternative mechanisms to perform token transfer, such as signature-based. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function _safeTransfer( address from, address to, uint256 tokenId, bytes memory data ) internal virtual { _transfer(from, to, tokenId); require(_checkOnERC721Received(from, to, tokenId, data), "ERC721: transfer to non ERC721Receiver implementer"); } /** * @dev Returns the owner of the `tokenId`. Does NOT revert if token doesn't exist */ function _ownerOf(uint256 tokenId) internal view virtual returns (address) { return _owners[tokenId]; } /** * @dev Returns whether `tokenId` exists. * * Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}. * * Tokens start existing when they are minted (`_mint`), * and stop existing when they are burned (`_burn`). */ function _exists(uint256 tokenId) internal view virtual returns (bool) { return _ownerOf(tokenId) != address(0); } /** * @dev Returns whether `spender` is allowed to manage `tokenId`. * * Requirements: * * - `tokenId` must exist. */ function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) { address owner = ERC721.ownerOf(tokenId); return (spender == owner || isApprovedForAll(owner, spender) || getApproved(tokenId) == spender); } /** * @dev Safely mints `tokenId` and transfers it to `to`. * * Requirements: * * - `tokenId` must not exist. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function _safeMint(address to, uint256 tokenId) internal virtual { _safeMint(to, tokenId, ""); } /** * @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is * forwarded in {IERC721Receiver-onERC721Received} to contract recipients. */ function _safeMint( address to, uint256 tokenId, bytes memory data ) internal virtual { _mint(to, tokenId); require( _checkOnERC721Received(address(0), to, tokenId, data), "ERC721: transfer to non ERC721Receiver implementer" ); } /** * @dev Mints `tokenId` and transfers it to `to`. * * WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible * * Requirements: * * - `tokenId` must not exist. * - `to` cannot be the zero address. * * Emits a {Transfer} event. */ function _mint(address to, uint256 tokenId) internal virtual { require(to != address(0), "ERC721: mint to the zero address"); require(!_exists(tokenId), "ERC721: token already minted"); _beforeTokenTransfer(address(0), to, tokenId, 1); // Check that tokenId was not minted by `_beforeTokenTransfer` hook require(!_exists(tokenId), "ERC721: token already minted"); unchecked { // Will not overflow unless all 2**256 token ids are minted to the same owner. // Given that tokens are minted one by one, it is impossible in practice that // this ever happens. Might change if we allow batch minting. // The ERC fails to describe this case. _balances[to] += 1; } _owners[tokenId] = to; emit Transfer(address(0), to, tokenId); _afterTokenTransfer(address(0), to, tokenId, 1); } /** * @dev Destroys `tokenId`. * The approval is cleared when the token is burned. * This is an internal function that does not check if the sender is authorized to operate on the token. * * Requirements: * * - `tokenId` must exist. * * Emits a {Transfer} event. */ function _burn(uint256 tokenId) internal virtual { address owner = ERC721.ownerOf(tokenId); _beforeTokenTransfer(owner, address(0), tokenId, 1); // Update ownership in case tokenId was transferred by `_beforeTokenTransfer` hook owner = ERC721.ownerOf(tokenId); // Clear approvals delete _tokenApprovals[tokenId]; unchecked { // Cannot overflow, as that would require more tokens to be burned/transferred // out than the owner initially received through minting and transferring in. _balances[owner] -= 1; } delete _owners[tokenId]; emit Transfer(owner, address(0), tokenId); _afterTokenTransfer(owner, address(0), tokenId, 1); } /** * @dev Transfers `tokenId` from `from` to `to`. * As opposed to {transferFrom}, this imposes no restrictions on msg.sender. * * Requirements: * * - `to` cannot be the zero address. * - `tokenId` token must be owned by `from`. * * Emits a {Transfer} event. */ function _transfer( address from, address to, uint256 tokenId ) internal virtual { require(ERC721.ownerOf(tokenId) == from, "ERC721: transfer from incorrect owner"); require(to != address(0), "ERC721: transfer to the zero address"); _beforeTokenTransfer(from, to, tokenId, 1); // Check that tokenId was not transferred by `_beforeTokenTransfer` hook require(ERC721.ownerOf(tokenId) == from, "ERC721: transfer from incorrect owner"); // Clear approvals from the previous owner delete _tokenApprovals[tokenId]; unchecked { // `_balances[from]` cannot overflow for the same reason as described in `_burn`: // `from`'s balance is the number of token held, which is at least one before the current // transfer. // `_balances[to]` could overflow in the conditions described in `_mint`. That would require // all 2**256 token ids to be minted, which in practice is impossible. _balances[from] -= 1; _balances[to] += 1; } _owners[tokenId] = to; emit Transfer(from, to, tokenId); _afterTokenTransfer(from, to, tokenId, 1); } /** * @dev Approve `to` to operate on `tokenId` * * Emits an {Approval} event. */ function _approve(address to, uint256 tokenId) internal virtual { _tokenApprovals[tokenId] = to; emit Approval(ERC721.ownerOf(tokenId), to, tokenId); } /** * @dev Approve `operator` to operate on all of `owner` tokens * * Emits an {ApprovalForAll} event. */ function _setApprovalForAll( address owner, address operator, bool approved ) internal virtual { require(owner != operator, "ERC721: approve to caller"); _operatorApprovals[owner][operator] = approved; emit ApprovalForAll(owner, operator, approved); } /** * @dev Reverts if the `tokenId` has not been minted yet. */ function _requireMinted(uint256 tokenId) internal view virtual { require(_exists(tokenId), "ERC721: invalid token ID"); } /** * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address. * The call is not executed if the target address is not a contract. * * @param from address representing the previous owner of the given token ID * @param to target address that will receive the tokens * @param tokenId uint256 ID of the token to be transferred * @param data bytes optional data to send along with the call * @return bool whether the call correctly returned the expected magic value */ function _checkOnERC721Received( address from, address to, uint256 tokenId, bytes memory data ) private returns (bool) { if (to.isContract()) { try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, data) returns (bytes4 retval) { return retval == IERC721Receiver.onERC721Received.selector; } catch (bytes memory reason) { if (reason.length == 0) { revert("ERC721: transfer to non ERC721Receiver implementer"); } else { /// @solidity memory-safe-assembly assembly { revert(add(32, reason), mload(reason)) } } } } else { return true; } } /** * @dev Hook that is called before any token transfer. This includes minting and burning. If {ERC721Consecutive} is * used, the hook may be called as part of a consecutive (batch) mint, as indicated by `batchSize` greater than 1. * * Calling conditions: * * - When `from` and `to` are both non-zero, ``from``'s tokens will be transferred to `to`. * - When `from` is zero, the tokens will be minted for `to`. * - When `to` is zero, ``from``'s tokens will be burned. * - `from` and `to` are never both zero. * - `batchSize` is non-zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _beforeTokenTransfer( address from, address to, uint256, /* firstTokenId */ uint256 batchSize ) internal virtual { if (batchSize > 1) { if (from != address(0)) { _balances[from] -= batchSize; } if (to != address(0)) { _balances[to] += batchSize; } } } /** * @dev Hook that is called after any token transfer. This includes minting and burning. If {ERC721Consecutive} is * used, the hook may be called as part of a consecutive (batch) mint, as indicated by `batchSize` greater than 1. * * Calling conditions: * * - When `from` and `to` are both non-zero, ``from``'s tokens were transferred to `to`. * - When `from` is zero, the tokens were minted for `to`. * - When `to` is zero, ``from``'s tokens were burned. * - `from` and `to` are never both zero. * - `batchSize` is non-zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _afterTokenTransfer( address from, address to, uint256 firstTokenId, uint256 batchSize ) internal virtual {} }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.8.0) (token/ERC721/IERC721.sol) pragma solidity ^0.8.0; import "../../utils/introspection/IERC165.sol"; /** * @dev Required interface of an ERC721 compliant contract. */ interface IERC721 is IERC165 { /** * @dev Emitted when `tokenId` token is transferred from `from` to `to`. */ event Transfer(address indexed from, address indexed to, uint256 indexed tokenId); /** * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token. */ event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId); /** * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets. */ event ApprovalForAll(address indexed owner, address indexed operator, bool approved); /** * @dev Returns the number of tokens in ``owner``'s account. */ function balanceOf(address owner) external view returns (uint256 balance); /** * @dev Returns the owner of the `tokenId` token. * * Requirements: * * - `tokenId` must exist. */ function ownerOf(uint256 tokenId) external view returns (address owner); /** * @dev Safely transfers `tokenId` token from `from` to `to`. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function safeTransferFrom( address from, address to, uint256 tokenId, bytes calldata data ) external; /** * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients * are aware of the ERC721 protocol to prevent tokens from being forever locked. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If the caller is not `from`, it must have been allowed to move this token by either {approve} or {setApprovalForAll}. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function safeTransferFrom( address from, address to, uint256 tokenId ) external; /** * @dev Transfers `tokenId` token from `from` to `to`. * * WARNING: Note that the caller is responsible to confirm that the recipient is capable of receiving ERC721 * or else they may be permanently lost. Usage of {safeTransferFrom} prevents loss, though the caller must * understand this adds an external call which potentially creates a reentrancy vulnerability. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must be owned by `from`. * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. * * Emits a {Transfer} event. */ function transferFrom( address from, address to, uint256 tokenId ) external; /** * @dev Gives permission to `to` to transfer `tokenId` token to another account. * The approval is cleared when the token is transferred. * * Only a single account can be approved at a time, so approving the zero address clears previous approvals. * * Requirements: * * - The caller must own the token or be an approved operator. * - `tokenId` must exist. * * Emits an {Approval} event. */ function approve(address to, uint256 tokenId) external; /** * @dev Approve or remove `operator` as an operator for the caller. * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller. * * Requirements: * * - The `operator` cannot be the caller. * * Emits an {ApprovalForAll} event. */ function setApprovalForAll(address operator, bool _approved) external; /** * @dev Returns the account approved for `tokenId` token. * * Requirements: * * - `tokenId` must exist. */ function getApproved(uint256 tokenId) external view returns (address operator); /** * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`. * * See {setApprovalForAll} */ function isApprovedForAll(address owner, address operator) external view returns (bool); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.6.0) (token/ERC721/IERC721Receiver.sol) pragma solidity ^0.8.0; /** * @title ERC721 token receiver interface * @dev Interface for any contract that wants to support safeTransfers * from ERC721 asset contracts. */ interface IERC721Receiver { /** * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom} * by `operator` from `from`, this function is called. * * It must return its Solidity selector to confirm the token transfer. * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted. * * The selector can be obtained in Solidity with `IERC721Receiver.onERC721Received.selector`. */ function onERC721Received( address operator, address from, uint256 tokenId, bytes calldata data ) external returns (bytes4); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.8.0) (token/ERC721/extensions/ERC721Burnable.sol) pragma solidity ^0.8.0; import "../ERC721.sol"; import "../../../utils/Context.sol"; /** * @title ERC721 Burnable Token * @dev ERC721 Token that can be burned (destroyed). */ abstract contract ERC721Burnable is Context, ERC721 { /** * @dev Burns `tokenId`. See {ERC721-_burn}. * * Requirements: * * - The caller must own `tokenId` or be an approved operator. */ function burn(uint256 tokenId) public virtual { //solhint-disable-next-line max-line-length require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: caller is not token owner or approved"); _burn(tokenId); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.8.0) (token/ERC721/extensions/ERC721Enumerable.sol) pragma solidity ^0.8.0; import "../ERC721.sol"; import "./IERC721Enumerable.sol"; /** * @dev This implements an optional extension of {ERC721} defined in the EIP that adds * enumerability of all the token ids in the contract as well as all token ids owned by each * account. */ abstract contract ERC721Enumerable is ERC721, IERC721Enumerable { // Mapping from owner to list of owned token IDs mapping(address => mapping(uint256 => uint256)) private _ownedTokens; // Mapping from token ID to index of the owner tokens list mapping(uint256 => uint256) private _ownedTokensIndex; // Array with all token ids, used for enumeration uint256[] private _allTokens; // Mapping from token id to position in the allTokens array mapping(uint256 => uint256) private _allTokensIndex; /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, ERC721) returns (bool) { return interfaceId == type(IERC721Enumerable).interfaceId || super.supportsInterface(interfaceId); } /** * @dev See {IERC721Enumerable-tokenOfOwnerByIndex}. */ function tokenOfOwnerByIndex(address owner, uint256 index) public view virtual override returns (uint256) { require(index < ERC721.balanceOf(owner), "ERC721Enumerable: owner index out of bounds"); return _ownedTokens[owner][index]; } /** * @dev See {IERC721Enumerable-totalSupply}. */ function totalSupply() public view virtual override returns (uint256) { return _allTokens.length; } /** * @dev See {IERC721Enumerable-tokenByIndex}. */ function tokenByIndex(uint256 index) public view virtual override returns (uint256) { require(index < ERC721Enumerable.totalSupply(), "ERC721Enumerable: global index out of bounds"); return _allTokens[index]; } /** * @dev See {ERC721-_beforeTokenTransfer}. */ function _beforeTokenTransfer( address from, address to, uint256 firstTokenId, uint256 batchSize ) internal virtual override { super._beforeTokenTransfer(from, to, firstTokenId, batchSize); if (batchSize > 1) { // Will only trigger during construction. Batch transferring (minting) is not available afterwards. revert("ERC721Enumerable: consecutive transfers not supported"); } uint256 tokenId = firstTokenId; if (from == address(0)) { _addTokenToAllTokensEnumeration(tokenId); } else if (from != to) { _removeTokenFromOwnerEnumeration(from, tokenId); } if (to == address(0)) { _removeTokenFromAllTokensEnumeration(tokenId); } else if (to != from) { _addTokenToOwnerEnumeration(to, tokenId); } } /** * @dev Private function to add a token to this extension's ownership-tracking data structures. * @param to address representing the new owner of the given token ID * @param tokenId uint256 ID of the token to be added to the tokens list of the given address */ function _addTokenToOwnerEnumeration(address to, uint256 tokenId) private { uint256 length = ERC721.balanceOf(to); _ownedTokens[to][length] = tokenId; _ownedTokensIndex[tokenId] = length; } /** * @dev Private function to add a token to this extension's token tracking data structures. * @param tokenId uint256 ID of the token to be added to the tokens list */ function _addTokenToAllTokensEnumeration(uint256 tokenId) private { _allTokensIndex[tokenId] = _allTokens.length; _allTokens.push(tokenId); } /** * @dev Private function to remove a token from this extension's ownership-tracking data structures. Note that * while the token is not assigned a new owner, the `_ownedTokensIndex` mapping is _not_ updated: this allows for * gas optimizations e.g. when performing a transfer operation (avoiding double writes). * This has O(1) time complexity, but alters the order of the _ownedTokens array. * @param from address representing the previous owner of the given token ID * @param tokenId uint256 ID of the token to be removed from the tokens list of the given address */ function _removeTokenFromOwnerEnumeration(address from, uint256 tokenId) private { // To prevent a gap in from's tokens array, we store the last token in the index of the token to delete, and // then delete the last slot (swap and pop). uint256 lastTokenIndex = ERC721.balanceOf(from) - 1; uint256 tokenIndex = _ownedTokensIndex[tokenId]; // When the token to delete is the last token, the swap operation is unnecessary if (tokenIndex != lastTokenIndex) { uint256 lastTokenId = _ownedTokens[from][lastTokenIndex]; _ownedTokens[from][tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token _ownedTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index } // This also deletes the contents at the last position of the array delete _ownedTokensIndex[tokenId]; delete _ownedTokens[from][lastTokenIndex]; } /** * @dev Private function to remove a token from this extension's token tracking data structures. * This has O(1) time complexity, but alters the order of the _allTokens array. * @param tokenId uint256 ID of the token to be removed from the tokens list */ function _removeTokenFromAllTokensEnumeration(uint256 tokenId) private { // To prevent a gap in the tokens array, we store the last token in the index of the token to delete, and // then delete the last slot (swap and pop). uint256 lastTokenIndex = _allTokens.length - 1; uint256 tokenIndex = _allTokensIndex[tokenId]; // When the token to delete is the last token, the swap operation is unnecessary. However, since this occurs so // rarely (when the last minted token is burnt) that we still do the swap here to avoid the gas cost of adding // an 'if' statement (like in _removeTokenFromOwnerEnumeration) uint256 lastTokenId = _allTokens[lastTokenIndex]; _allTokens[tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token _allTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index // This also deletes the contents at the last position of the array delete _allTokensIndex[tokenId]; _allTokens.pop(); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.5.0) (token/ERC721/extensions/IERC721Enumerable.sol) pragma solidity ^0.8.0; import "../IERC721.sol"; /** * @title ERC-721 Non-Fungible Token Standard, optional enumeration extension * @dev See https://eips.ethereum.org/EIPS/eip-721 */ interface IERC721Enumerable is IERC721 { /** * @dev Returns the total amount of tokens stored by the contract. */ function totalSupply() external view returns (uint256); /** * @dev Returns a token ID owned by `owner` at a given `index` of its token list. * Use along with {balanceOf} to enumerate all of ``owner``'s tokens. */ function tokenOfOwnerByIndex(address owner, uint256 index) external view returns (uint256); /** * @dev Returns a token ID at a given `index` of all the tokens stored by the contract. * Use along with {totalSupply} to enumerate all tokens. */ function tokenByIndex(uint256 index) external view returns (uint256); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/IERC721Metadata.sol) pragma solidity ^0.8.0; import "../IERC721.sol"; /** * @title ERC-721 Non-Fungible Token Standard, optional metadata extension * @dev See https://eips.ethereum.org/EIPS/eip-721 */ interface IERC721Metadata is IERC721 { /** * @dev Returns the token collection name. */ function name() external view returns (string memory); /** * @dev Returns the token collection symbol. */ function symbol() external view returns (string memory); /** * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token. */ function tokenURI(uint256 tokenId) external view returns (string memory); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.8.0) (utils/Address.sol) pragma solidity ^0.8.1; /** * @dev Collection of functions related to the address type */ library Address { /** * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== * * [IMPORTANT] * ==== * You shouldn't rely on `isContract` to protect against flash loan attacks! * * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract * constructor. * ==== */ function isContract(address account) internal view returns (bool) { // This method relies on extcodesize/address.code.length, which returns 0 // for contracts in construction, since the code is only stored at the end // of the constructor execution. return account.code.length > 0; } /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); (bool success, ) = recipient.call{value: amount}(""); require(success, "Address: unable to send value, recipient may have reverted"); } /** * @dev Performs a Solidity function call using a low level `call`. A * plain `call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, "Address: low-level call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value ) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /** * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value, string memory errorMessage ) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); (bool success, bytes memory returndata) = target.call{value: value}(data); return verifyCallResultFromTarget(target, success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall( address target, bytes memory data, string memory errorMessage ) internal view returns (bytes memory) { (bool success, bytes memory returndata) = target.staticcall(data); return verifyCallResultFromTarget(target, success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { return functionDelegateCall(target, data, "Address: low-level delegate call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { (bool success, bytes memory returndata) = target.delegatecall(data); return verifyCallResultFromTarget(target, success, returndata, errorMessage); } /** * @dev Tool to verify that a low level call to smart-contract was successful, and revert (either by bubbling * the revert reason or using the provided one) in case of unsuccessful call or if target was not a contract. * * _Available since v4.8._ */ function verifyCallResultFromTarget( address target, bool success, bytes memory returndata, string memory errorMessage ) internal view returns (bytes memory) { if (success) { if (returndata.length == 0) { // only check isContract if the call was successful and the return data is empty // otherwise we already know that it was a contract require(isContract(target), "Address: call to non-contract"); } return returndata; } else { _revert(returndata, errorMessage); } } /** * @dev Tool to verify that a low level call was successful, and revert if it wasn't, either by bubbling the * revert reason or using the provided one. * * _Available since v4.3._ */ function verifyCallResult( bool success, bytes memory returndata, string memory errorMessage ) internal pure returns (bytes memory) { if (success) { return returndata; } else { _revert(returndata, errorMessage); } } function _revert(bytes memory returndata, string memory errorMessage) private pure { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly /// @solidity memory-safe-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/Context.sol) pragma solidity ^0.8.0; /** * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract Context { function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { return msg.data; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.8.0) (utils/Strings.sol) pragma solidity ^0.8.0; import "./math/Math.sol"; /** * @dev String operations. */ library Strings { bytes16 private constant _SYMBOLS = "0123456789abcdef"; uint8 private constant _ADDRESS_LENGTH = 20; /** * @dev Converts a `uint256` to its ASCII `string` decimal representation. */ function toString(uint256 value) internal pure returns (string memory) { unchecked { uint256 length = Math.log10(value) + 1; string memory buffer = new string(length); uint256 ptr; /// @solidity memory-safe-assembly assembly { ptr := add(buffer, add(32, length)) } while (true) { ptr--; /// @solidity memory-safe-assembly assembly { mstore8(ptr, byte(mod(value, 10), _SYMBOLS)) } value /= 10; if (value == 0) break; } return buffer; } } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation. */ function toHexString(uint256 value) internal pure returns (string memory) { unchecked { return toHexString(value, Math.log256(value) + 1); } } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length. */ function toHexString(uint256 value, uint256 length) internal pure returns (string memory) { bytes memory buffer = new bytes(2 * length + 2); buffer[0] = "0"; buffer[1] = "x"; for (uint256 i = 2 * length + 1; i > 1; --i) { buffer[i] = _SYMBOLS[value & 0xf]; value >>= 4; } require(value == 0, "Strings: hex length insufficient"); return string(buffer); } /** * @dev Converts an `address` with fixed length of 20 bytes to its not checksummed ASCII `string` hexadecimal representation. */ function toHexString(address addr) internal pure returns (string memory) { return toHexString(uint256(uint160(addr)), _ADDRESS_LENGTH); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol) pragma solidity ^0.8.0; import "./IERC165.sol"; /** * @dev Implementation of the {IERC165} interface. * * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check * for the additional interface id that will be supported. For example: * * ```solidity * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { * return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId); * } * ``` * * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation. */ abstract contract ERC165 is IERC165 { /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { return interfaceId == type(IERC165).interfaceId; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol) pragma solidity ^0.8.0; /** * @dev Interface of the ERC165 standard, as defined in the * https://eips.ethereum.org/EIPS/eip-165[EIP]. * * Implementers can declare support of contract interfaces, which can then be * queried by others ({ERC165Checker}). * * For an implementation, see {ERC165}. */ interface IERC165 { /** * @dev Returns true if this contract implements the interface defined by * `interfaceId`. See the corresponding * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section] * to learn more about how these ids are created. * * This function call must use less than 30 000 gas. */ function supportsInterface(bytes4 interfaceId) external view returns (bool); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.8.0) (utils/math/Math.sol) pragma solidity ^0.8.0; /** * @dev Standard math utilities missing in the Solidity language. */ library Math { enum Rounding { Down, // Toward negative infinity Up, // Toward infinity Zero // Toward zero } /** * @dev Returns the largest of two numbers. */ function max(uint256 a, uint256 b) internal pure returns (uint256) { return a > b ? a : b; } /** * @dev Returns the smallest of two numbers. */ function min(uint256 a, uint256 b) internal pure returns (uint256) { return a < b ? a : b; } /** * @dev Returns the average of two numbers. The result is rounded towards * zero. */ function average(uint256 a, uint256 b) internal pure returns (uint256) { // (a + b) / 2 can overflow. return (a & b) + (a ^ b) / 2; } /** * @dev Returns the ceiling of the division of two numbers. * * This differs from standard division with `/` in that it rounds up instead * of rounding down. */ function ceilDiv(uint256 a, uint256 b) internal pure returns (uint256) { // (a + b - 1) / b can overflow on addition, so we distribute. return a == 0 ? 0 : (a - 1) / b + 1; } /** * @notice Calculates floor(x * y / denominator) with full precision. Throws if result overflows a uint256 or denominator == 0 * @dev Original credit to Remco Bloemen under MIT license (https://xn--2-umb.com/21/muldiv) * with further edits by Uniswap Labs also under MIT license. */ function mulDiv( uint256 x, uint256 y, uint256 denominator ) internal pure returns (uint256 result) { unchecked { // 512-bit multiply [prod1 prod0] = x * y. Compute the product mod 2^256 and mod 2^256 - 1, then use // use the Chinese Remainder Theorem to reconstruct the 512 bit result. The result is stored in two 256 // variables such that product = prod1 * 2^256 + prod0. uint256 prod0; // Least significant 256 bits of the product uint256 prod1; // Most significant 256 bits of the product assembly { let mm := mulmod(x, y, not(0)) prod0 := mul(x, y) prod1 := sub(sub(mm, prod0), lt(mm, prod0)) } // Handle non-overflow cases, 256 by 256 division. if (prod1 == 0) { return prod0 / denominator; } // Make sure the result is less than 2^256. Also prevents denominator == 0. require(denominator > prod1); /////////////////////////////////////////////// // 512 by 256 division. /////////////////////////////////////////////// // Make division exact by subtracting the remainder from [prod1 prod0]. uint256 remainder; assembly { // Compute remainder using mulmod. remainder := mulmod(x, y, denominator) // Subtract 256 bit number from 512 bit number. prod1 := sub(prod1, gt(remainder, prod0)) prod0 := sub(prod0, remainder) } // Factor powers of two out of denominator and compute largest power of two divisor of denominator. Always >= 1. // See https://cs.stackexchange.com/q/138556/92363. // Does not overflow because the denominator cannot be zero at this stage in the function. uint256 twos = denominator & (~denominator + 1); assembly { // Divide denominator by twos. denominator := div(denominator, twos) // Divide [prod1 prod0] by twos. prod0 := div(prod0, twos) // Flip twos such that it is 2^256 / twos. If twos is zero, then it becomes one. twos := add(div(sub(0, twos), twos), 1) } // Shift in bits from prod1 into prod0. prod0 |= prod1 * twos; // Invert denominator mod 2^256. Now that denominator is an odd number, it has an inverse modulo 2^256 such // that denominator * inv = 1 mod 2^256. Compute the inverse by starting with a seed that is correct for // four bits. That is, denominator * inv = 1 mod 2^4. uint256 inverse = (3 * denominator) ^ 2; // Use the Newton-Raphson iteration to improve the precision. Thanks to Hensel's lifting lemma, this also works // in modular arithmetic, doubling the correct bits in each step. inverse *= 2 - denominator * inverse; // inverse mod 2^8 inverse *= 2 - denominator * inverse; // inverse mod 2^16 inverse *= 2 - denominator * inverse; // inverse mod 2^32 inverse *= 2 - denominator * inverse; // inverse mod 2^64 inverse *= 2 - denominator * inverse; // inverse mod 2^128 inverse *= 2 - denominator * inverse; // inverse mod 2^256 // Because the division is now exact we can divide by multiplying with the modular inverse of denominator. // This will give us the correct result modulo 2^256. Since the preconditions guarantee that the outcome is // less than 2^256, this is the final result. We don't need to compute the high bits of the result and prod1 // is no longer required. result = prod0 * inverse; return result; } } /** * @notice Calculates x * y / denominator with full precision, following the selected rounding direction. */ function mulDiv( uint256 x, uint256 y, uint256 denominator, Rounding rounding ) internal pure returns (uint256) { uint256 result = mulDiv(x, y, denominator); if (rounding == Rounding.Up && mulmod(x, y, denominator) > 0) { result += 1; } return result; } /** * @dev Returns the square root of a number. If the number is not a perfect square, the value is rounded down. * * Inspired by Henry S. Warren, Jr.'s "Hacker's Delight" (Chapter 11). */ function sqrt(uint256 a) internal pure returns (uint256) { if (a == 0) { return 0; } // For our first guess, we get the biggest power of 2 which is smaller than the square root of the target. // // We know that the "msb" (most significant bit) of our target number `a` is a power of 2 such that we have // `msb(a) <= a < 2*msb(a)`. This value can be written `msb(a)=2**k` with `k=log2(a)`. // // This can be rewritten `2**log2(a) <= a < 2**(log2(a) + 1)` // → `sqrt(2**k) <= sqrt(a) < sqrt(2**(k+1))` // → `2**(k/2) <= sqrt(a) < 2**((k+1)/2) <= 2**(k/2 + 1)` // // Consequently, `2**(log2(a) / 2)` is a good first approximation of `sqrt(a)` with at least 1 correct bit. uint256 result = 1 << (log2(a) >> 1); // At this point `result` is an estimation with one bit of precision. We know the true value is a uint128, // since it is the square root of a uint256. Newton's method converges quadratically (precision doubles at // every iteration). We thus need at most 7 iteration to turn our partial result with one bit of precision // into the expected uint128 result. unchecked { result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; return min(result, a / result); } } /** * @notice Calculates sqrt(a), following the selected rounding direction. */ function sqrt(uint256 a, Rounding rounding) internal pure returns (uint256) { unchecked { uint256 result = sqrt(a); return result + (rounding == Rounding.Up && result * result < a ? 1 : 0); } } /** * @dev Return the log in base 2, rounded down, of a positive value. * Returns 0 if given 0. */ function log2(uint256 value) internal pure returns (uint256) { uint256 result = 0; unchecked { if (value >> 128 > 0) { value >>= 128; result += 128; } if (value >> 64 > 0) { value >>= 64; result += 64; } if (value >> 32 > 0) { value >>= 32; result += 32; } if (value >> 16 > 0) { value >>= 16; result += 16; } if (value >> 8 > 0) { value >>= 8; result += 8; } if (value >> 4 > 0) { value >>= 4; result += 4; } if (value >> 2 > 0) { value >>= 2; result += 2; } if (value >> 1 > 0) { result += 1; } } return result; } /** * @dev Return the log in base 2, following the selected rounding direction, of a positive value. * Returns 0 if given 0. */ function log2(uint256 value, Rounding rounding) internal pure returns (uint256) { unchecked { uint256 result = log2(value); return result + (rounding == Rounding.Up && 1 << result < value ? 1 : 0); } } /** * @dev Return the log in base 10, rounded down, of a positive value. * Returns 0 if given 0. */ function log10(uint256 value) internal pure returns (uint256) { uint256 result = 0; unchecked { if (value >= 10**64) { value /= 10**64; result += 64; } if (value >= 10**32) { value /= 10**32; result += 32; } if (value >= 10**16) { value /= 10**16; result += 16; } if (value >= 10**8) { value /= 10**8; result += 8; } if (value >= 10**4) { value /= 10**4; result += 4; } if (value >= 10**2) { value /= 10**2; result += 2; } if (value >= 10**1) { result += 1; } } return result; } /** * @dev Return the log in base 10, following the selected rounding direction, of a positive value. * Returns 0 if given 0. */ function log10(uint256 value, Rounding rounding) internal pure returns (uint256) { unchecked { uint256 result = log10(value); return result + (rounding == Rounding.Up && 10**result < value ? 1 : 0); } } /** * @dev Return the log in base 256, rounded down, of a positive value. * Returns 0 if given 0. * * Adding one to the result gives the number of pairs of hex symbols needed to represent `value` as a hex string. */ function log256(uint256 value) internal pure returns (uint256) { uint256 result = 0; unchecked { if (value >> 128 > 0) { value >>= 128; result += 16; } if (value >> 64 > 0) { value >>= 64; result += 8; } if (value >> 32 > 0) { value >>= 32; result += 4; } if (value >> 16 > 0) { value >>= 16; result += 2; } if (value >> 8 > 0) { result += 1; } } return result; } /** * @dev Return the log in base 10, following the selected rounding direction, of a positive value. * Returns 0 if given 0. */ function log256(uint256 value, Rounding rounding) internal pure returns (uint256) { unchecked { uint256 result = log256(value); return result + (rounding == Rounding.Up && 1 << (result * 8) < value ? 1 : 0); } } }
// SPDX-License-Identifier: MIT pragma solidity 0.8.18; import "@openzeppelin/contracts/access/AccessControl.sol"; import "@openzeppelin/contracts/access/Ownable.sol"; import "@openzeppelin/contracts/token/ERC721/ERC721.sol"; import "@openzeppelin/contracts/token/ERC721/extensions/ERC721Burnable.sol"; import "@openzeppelin/contracts/token/ERC721/extensions/ERC721Enumerable.sol"; contract Originals is ERC721, ERC721Burnable, ERC721Enumerable, AccessControl, Ownable { struct Release { bool frozenMetadata; uint256 maxSupply; uint256 createdSupply; uint256 totalSupply; uint256[] tokenIDs; string[] uris; } struct Token { uint256 releaseID; uint256 index; } error InvalidMaxSupply(); error InvalidURIs(); error ReleaseNotFound(); error MetadataIsFrozen(); error NotEnoughSupply(); error TokenDoesNotBelongToRelease(); error TokenNotFound(); event ReleaseCreated(uint256 __releaseID); event MetadataUpdate(uint256 __tokenId); event PermanentURI(string __value, uint256 indexed __releaseID); // Used to track ID of next release uint256 private _nextReleaseID = 1; // Used to track ID of next token uint256 private _nextTokenID = 1; // Mapping of releases mapping(uint256 => Release) private _releases; // Mapping of tokens mapping(uint256 => Token) private _tokens; // Minter Role used in minting operations bytes32 constant MINTER_ROLE = bytes32("MINTER_ROLE"); /** * @dev Sets name/symbol and grants initial roles to owner upon construction. */ constructor( string memory __name, string memory __symbol ) ERC721(__name, __symbol) { _grantRole(DEFAULT_ADMIN_ROLE, _msgSender()); _grantRole(MINTER_ROLE, _msgSender()); } //////////////////////////////////////////////////////////////////////////// // MODIFIERS //////////////////////////////////////////////////////////////////////////// /** * @dev Checks if release exists. * * Requirements: * * - `__releaseID` must be of existing release. */ modifier onlyExistingRelease(uint256 __releaseID) { if (!releaseExists(__releaseID)) { revert ReleaseNotFound(); } _; } /** * @dev Checks if token exists. * * Requirements: * * - `__tokenID` must exist. */ modifier onlyExistingToken(uint256 __tokenID) { if (!_exists(__tokenID)) { revert TokenNotFound(); } _; } //////////////////////////////////////////////////////////////////////////// // INTERNALS //////////////////////////////////////////////////////////////////////////// function _beforeTokenTransfer( address __from, address __to, uint256 __tokenID, uint256 __batchSize ) internal virtual override(ERC721, ERC721Enumerable) { super._beforeTokenTransfer(__from, __to, __tokenID, __batchSize); } //////////////////////////////////////////////////////////////////////////// // OWNER //////////////////////////////////////////////////////////////////////////// /** * @dev Used to create a new release. * * Emits a {ReleaseCreated} event. * */ function createRelease( uint256 __maxSupply, string[] calldata __uris ) external onlyRole(DEFAULT_ADMIN_ROLE) { if (__maxSupply == 0) { revert InvalidMaxSupply(); } if (__uris.length != __maxSupply) { revert InvalidURIs(); } uint256 releaseId = _nextReleaseID++; _releases[releaseId] = Release({ frozenMetadata: false, maxSupply: __maxSupply, createdSupply: 0, totalSupply: 0, tokenIDs: new uint256[](__maxSupply), uris: __uris }); emit ReleaseCreated(releaseId); } /** * @dev Used to edit a token URI. * * Emits a {MetadataUpdate} event. * */ function editURI( uint256 __releaseID, uint256 __tokenID, string memory __uri ) external onlyRole(DEFAULT_ADMIN_ROLE) onlyExistingRelease(__releaseID) onlyExistingToken(__tokenID) { Release memory release = _releases[__releaseID]; if (release.frozenMetadata) { revert MetadataIsFrozen(); } Token memory token = _tokens[__tokenID]; if (token.releaseID != __releaseID) { revert TokenDoesNotBelongToRelease(); } _releases[__releaseID].uris[token.index] = __uri; emit MetadataUpdate(__tokenID); } /** * @dev Used to edit the token URI(s) of a release. * * Emits a {MetadataUpdate} event. * */ function editURIs( uint256 __releaseID, string[] memory __uris ) external onlyRole(DEFAULT_ADMIN_ROLE) onlyExistingRelease(__releaseID) { Release memory release = _releases[__releaseID]; if (release.frozenMetadata) { revert MetadataIsFrozen(); } if (__uris.length != release.maxSupply) { revert InvalidURIs(); } _releases[__releaseID].uris = __uris; for (uint256 i = 0; i < release.tokenIDs.length; i++) { if (release.tokenIDs[i] != 0) { emit MetadataUpdate(release.tokenIDs[i]); } } } /** * @dev Used to freeze metadata. * * Emits a {ReleaseFrozen} event. * */ function freezeMetadata( uint256 __releaseID ) external onlyRole(DEFAULT_ADMIN_ROLE) onlyExistingRelease(__releaseID) { Release memory release = _releases[__releaseID]; _releases[__releaseID].frozenMetadata = true; for (uint256 i = 0; i < release.tokenIDs.length; i++) { if (release.tokenIDs[i] != 0) { emit PermanentURI(release.uris[i], release.tokenIDs[i]); } } } //////////////////////////////////////////////////////////////////////////// // MINTER //////////////////////////////////////////////////////////////////////////// /** * @dev Used to mint token(s) of a release for a one account. */ function mint( address __account, uint256 __releaseID, uint256 __amount ) external onlyRole(MINTER_ROLE) onlyExistingRelease(__releaseID) { Release memory release = _releases[__releaseID]; if (release.createdSupply + __amount > release.maxSupply) { revert NotEnoughSupply(); } for (uint256 i = 0; i < __amount; i++) { uint256 tokenID = _nextTokenID++; uint256 tokenIndex = _releases[__releaseID].createdSupply++; _releases[__releaseID].tokenIDs[tokenIndex] = tokenID; _tokens[tokenID] = Token(__releaseID, tokenIndex); _safeMint(__account, tokenID); } _releases[__releaseID].totalSupply += __amount; } /** * @dev Used to mint token(s) of a release for many accounts. */ function mintMany( address[] calldata __accounts, uint256 __releaseID, uint256[] calldata __amounts ) external onlyRole(MINTER_ROLE) onlyExistingRelease(__releaseID) { Release memory release = _releases[__releaseID]; uint256 totalAmount = 0; for (uint i = 0; i < __amounts.length; i++) { totalAmount += __amounts[i]; } if ( release.createdSupply + totalAmount > _releases[__releaseID].maxSupply ) { revert NotEnoughSupply(); } for (uint256 i = 0; i < __accounts.length; i++) { for (uint256 n = 0; n < __amounts[i]; n++) { uint256 tokenID = _nextTokenID++; uint256 tokenIndex = _releases[__releaseID].createdSupply++; _releases[__releaseID].tokenIDs[tokenIndex] = tokenID; _tokens[tokenID] = Token(__releaseID, tokenIndex); _safeMint(__accounts[i], tokenID); } } _releases[__releaseID].totalSupply += totalAmount; } //////////////////////////////////////////////////////////////////////////// // WRITES //////////////////////////////////////////////////////////////////////////// /** * @dev Used to burn token(s) of a release for a one account. */ function burn( uint256 __tokenID ) public override onlyExistingToken(__tokenID) { super.burn(__tokenID); Token memory token = _tokens[__tokenID]; _releases[token.releaseID].tokenIDs[token.index] = 0; _releases[token.releaseID].totalSupply -= 1; } //////////////////////////////////////////////////////////////////////////// // READS //////////////////////////////////////////////////////////////////////////// /** * @dev Returns the max supply of a release. */ function createdSupply( uint256 __releaseID ) external view onlyExistingRelease(__releaseID) returns (uint256) { return _releases[__releaseID].createdSupply; } /** * @dev Returns whether or not a release exists. */ function releaseExists(uint256 __releaseID) public view returns (bool) { if (__releaseID != 0 && __releaseID < _nextReleaseID) { return true; } return false; } /** * @dev Returns a release. */ function getRelease( uint256 __releaseID ) external view onlyExistingRelease(__releaseID) returns (Release memory) { return _releases[__releaseID]; } /** * @dev Returns the max supply of a release. */ function maxSupply( uint256 __releaseID ) external view onlyExistingRelease(__releaseID) returns (uint256) { return _releases[__releaseID].maxSupply; } /** * @dev Returns the number of total releases. */ function totalReleases() external view returns (uint256) { return _nextReleaseID - 1; } /** * @dev Returns the token URI of a release. */ function tokenURI( uint256 __tokenID ) public view virtual override onlyExistingToken(__tokenID) returns (string memory) { Token memory token = _tokens[__tokenID]; if (!releaseExists(token.releaseID)) { revert ReleaseNotFound(); } return _releases[token.releaseID].uris[token.index]; } /** * @dev See {ERC721-supportsInterface} and {AccessControl-supportsInterface}. */ function supportsInterface( bytes4 __interfaceId ) public view virtual override(ERC721, ERC721Enumerable, AccessControl) returns (bool) { return super.supportsInterface(__interfaceId); } }
{ "remappings": [ "@openzeppelin/=lib/openzeppelin-contracts/", "ds-test/=lib/forge-std/lib/ds-test/src/", "forge-std/=lib/forge-std/src/", "openzeppelin-contracts/=lib/openzeppelin-contracts/" ], "optimizer": { "enabled": true, "runs": 1000000 }, "metadata": { "bytecodeHash": "ipfs", "appendCBOR": true }, "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "devdoc", "userdoc", "metadata", "abi" ] } }, "evmVersion": "london", "libraries": {} }
Contract Security Audit
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inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"transferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"}]
Contract Creation Code
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