ETH Price: $3,245.73 (-1.19%)
Gas: 10.918 Gwei

Contract

0x96a18C340579DD1587BC9498Bcf9BF6FD4349EC4
Sponsored
ads MoonPay
Buy, sell and swap Ethereum with MoonPay.Buy Now!

Spend less on fees, more on crypto. Buy crypto easily with MoonPay Balance. 20M+ users trust MoonPay worldwide.

ads MetaMask
Manage your web3 everything with MetaMask. Try Now!

Ready to onboard to Ethereum? With MetaMask, you're in control.

ads eToro
One-stop crypto shop: trusted, simple & safe.

Don’t invest unless you’re prepared to lose all the money you invest.

Sponsored
ads Сoins.game
100 free spins for registration. Spin now!

Everyday giveaways up to 100 ETH, Lucky Spins. Deposit BONUS 300% and Cashbacks!

ads BC.GAME
- The Best ETH Casino Claim Now!

5000+ Slots & Live Casino Games, 50+cryptos. Register with Etherscan and get 760% deposit bonus. Win Big$, withdraw it fast.

ads Stake
200% Bonus, 100K Daily Giveaways, Instant Withdrawals Play Now!

Slots, Roulette, Poker & more - Proud sponsors of UFC, Everton & StakeF1 team!

Sponsored
ads BC.GAME
- The Best ETH Casino Claim Now!

5000+ Slots & Live Casino Games, 50+cryptos. Register with Etherscan and get 760% deposit bonus. Win Big$, withdraw it fast.

ads CryptoSlots
Play & Get 25 Free Spins at CryptoSlots Play Now

Anonymous play on awesome games - sign up now for 25 free jackpot spins - worth $100s!

ads CryptoWins
200% More Funds to Play on Us up to 4 BTC! Claim Now!

100s of games, generous bonuses, 20+ years of trusted gaming. Join CryptoWins & start winning today!

 

Overview

ETH Balance

0 ETH

Eth Value

$0.00

More Info

Private Name Tags

Add

Multichain Info

1 address found via
Advanced Filter

 Latest 25 from a total of 1,998 transactions

Transaction Hash
Method
Block
From
To
0xd05d137649f6ce39debfda480d18168f5836f23b6373822a22310bd773761227
Send Multi Sig171098562023-04-23 15:19:23641 days ago1682263163
Nexo: Deployer 2
IN
0x96a18C34...FD4349EC4
0 ETH0.0046392455.22120121
0x61115882b5a1216195ba82c86956832e102aa75350a67503f10b62d1f418d1e6
Transfer164353882023-01-18 18:09:23735 days ago1674065363
0xB7aD48E5...01a5202Cf
IN
0x96a18C34...FD4349EC4
0.02701969 ETH0.0006943630.08114229
0x0241d513429ca3f55c8ea2fd6290af4799338fc59299de1f9815424f63149893
Send Multi Sig154053452022-08-24 21:39:20882 days ago1661377160
Nexo: Deployer 2
IN
0x96a18C34...FD4349EC4
0 ETH0.00222226.44991888
0xc63de4576c134ac5b290cb5db22a6c3d1e29f5843ebb65039fa8556155505546
Transfer142795912022-02-26 4:36:061062 days ago1645850166
0xee8Da9CD...f65299Db3
IN
0x96a18C34...FD4349EC4
0.05136 ETH0.00044121
0x029397f5c0eecf2cd6f9ae390687f3ff8b65a78ebee19b9791ebd8a2f6cb1407
Transfer135832202021-11-09 16:32:411171 days ago1636475561
Coinbase Coinbase 5
IN
0x96a18C34...FD4349EC4
0.026028 ETH0.00348065150.78847969
0x8750b495cc953e26812fe077db3fdf44d28d4326f345cd9f00b000310d0ccd96
Transfer135734352021-11-08 3:31:591172 days ago1636342319
Coinbase Coinbase 6
IN
0x96a18C34...FD4349EC4
0.054846 ETH0.002487107.74200884
0x2ca4ab1bae6af7d4cec4a71fcc5bf985c9476dacfcd95aabfd4ce2b855f03301
Transfer135734032021-11-08 3:24:121172 days ago1636341852
0x4cC8FE50...5df0d9C11
IN
0x96a18C34...FD4349EC4
0.040797 ETH0.00312642135.44254133
0xeb9c4dca4ed29dd144df29d5f56d620910e41533af3290fc29b3672fea56f8aa
Transfer135734022021-11-08 3:23:591172 days ago1636341839
Coinbase Coinbase 5
IN
0x96a18C34...FD4349EC4
0.01611557 ETH0.00279465121.06965573
0x3a1bf1635ae2317e1ce01871c4467c4c13a9ecb84a35c417bbce4f74ca39993e
Transfer135723952021-11-07 23:38:571172 days ago1636328337
0xC02D75E9...193F41086
IN
0x96a18C34...FD4349EC4
0.016995 ETH0.00381013165.06220484
0xd0049274fb9126abe7ff28dd422b6927c588f259c41f97a4a9f0cf307d560d49
Transfer135720482021-11-07 22:18:271172 days ago1636323507
0x55EBb5AA...2cF8dd409
IN
0x96a18C34...FD4349EC4
0.048953 ETH0.00298503129.31765685
0x2ca8be3b9f2804dedf69d5a82c0e2eddb78b989a71207d1b4d79c27d7d3747d7
Transfer135719762021-11-07 22:01:021172 days ago1636322462
Coinbase Coinbase 5
IN
0x96a18C34...FD4349EC4
0.023884 ETH0.00313757135.92576071
0x0ebfc5fcb63441ff15e866ccb5a998863447c5a6dc49d8e815c74a12885c4135
Transfer135713222021-11-07 19:45:291172 days ago1636314329
0xd9A18Ca9...67ae4DB37
IN
0x96a18C34...FD4349EC4
0.019136 ETH0.00367277159.1116917
0x24a6686a91878ba92b87466bcfcf123bf4ab78a747b919f86c4d4b2710fb7762
Transfer135701552021-11-07 15:26:481173 days ago1636298808
Coinbase Coinbase 3
IN
0x96a18C34...FD4349EC4
0.021603 ETH0.0023963103.81266384
0x3b7b0e3bcb1e528aad545fd7463d52bc545e22589bb202b1c4ddf8ec794ad475
Transfer135676712021-11-07 5:56:511173 days ago1636264611
0x4BFc2bAa...5D6478dBb
IN
0x96a18C34...FD4349EC4
0.045256 ETH0.001814778.61661674
0x72897f9fd48c242533a083aaeb24192d0b3caec6053b5442bd2b5e9421639c56
Transfer135662642021-11-07 0:46:141173 days ago1636245974
Coinbase Coinbase 4
IN
0x96a18C34...FD4349EC4
0.015866 ETH0.0021124191.51391256
0x8351f347e85b4e6c376d6cb8854db94ad39a5820809505b8b95c8f0f2839d6e6
Transfer135659132021-11-06 23:32:411173 days ago1636241561
Voyager 9
IN
0x96a18C34...FD4349EC4
0.0111 ETH0.00343669148.88438482
0xa1f11cdecd13dc7e633d5b595ec886457483aacc2396d02fd2171c91f6c7ce5b
Transfer135658312021-11-06 23:11:111173 days ago1636240271
0x69221195...5231aCEE5
IN
0x96a18C34...FD4349EC4
0.015271 ETH0.001845979.96817896
0x9599f55558fbbfebb3aad670a5f0daea45f20fde372047ebf70b14b07c43dc41
Transfer135657562021-11-06 22:52:501173 days ago1636239170
0x1a02Ed7c...889b935ae
IN
0x96a18C34...FD4349EC4
0.025212 ETH0.0021328692.4
0x10526ef57b281a9c906a1954b97ae7eb491f17e0615eef2c586ec7a37e43e5bb
Transfer135651452021-11-06 20:41:231173 days ago1636231283
Voyager 9
IN
0x96a18C34...FD4349EC4
0.05953 ETH0.00332057143.85357848
0x9d28490df76fef1e6ac42190d3e14fd9d484b9ae451a5e0b2b16c7301c1c39bc
Transfer135637052021-11-06 15:17:581174 days ago1636211878
0xb68E73f3...2cc4A3657
IN
0x96a18C34...FD4349EC4
0.046389 ETH0.00373572161.83897897
0xb4bc0061847300526219a5eb5dd906571e0f0c7aa41a880647ffc81ee73dc444
Transfer135599892021-11-06 1:03:051174 days ago1636160585
0xad89c951...64B4500E9
IN
0x96a18C34...FD4349EC4
0.016981 ETH0.00312312135.3
0x8d3609134fcfffd1a266e93e28347b3039cd15e25a1164449633cedb7164faca
Transfer135593162021-11-05 22:33:141174 days ago1636151594
0x41edE84F...59C094b09
IN
0x96a18C34...FD4349EC4
0.030548 ETH0.00291547126.30392468
0x421f09ec89d4167e45ba613fe1e04b0f3168310675c44241c0f53cf701aa5ad7
Transfer135577832021-11-05 16:52:121175 days ago1636131132
0x3460d7B1...eB75A6b02
IN
0x96a18C34...FD4349EC4
0.010437 ETH0.0034382148.94980787
0xe4453d39e1b3e65e3498539572e31fd29252229e84858c0c74b67d92d39f875f
Transfer135572842021-11-05 15:04:341175 days ago1636124674
Coinbase Coinbase 6
IN
0x96a18C34...FD4349EC4
0.026474 ETH0.0045548197.32282668
0x0df1bd6239b5d83807ca11d3ea6d10699e174975eb329c507b0aec083308acce
Transfer135545332021-11-05 4:43:551175 days ago1636087435
Binance Binance 17
IN
0x96a18C34...FD4349EC4
0.04673 ETH0.00323162140
View all transactions

Latest 25 internal transactions (View All)

Advanced mode:
Parent Transaction Hash Block
From
To
0xd05d137649f6ce39debfda480d18168f5836f23b6373822a22310bd773761227
171098562023-04-23 15:19:23641 days ago1682263163
0x96a18C34...FD4349EC4
Nexo Nexo 49
0.02701969 ETH
0x0241d513429ca3f55c8ea2fd6290af4799338fc59299de1f9815424f63149893
154053452022-08-24 21:39:20882 days ago1661377160
0x96a18C34...FD4349EC4
Nexo Nexo: WBTC Merchant Deposit Address
5.42656806 ETH
0xbc948c67d86c252ba2bcd3dfed6d76a457dd5af3d88d1d422db66cea6c184e14
135361642021-11-02 7:09:221178 days ago1635836962
0x52bbef47...39AEA4856
0x96a18C34...FD4349EC4
0.079448 ETH
0x6c330354dd9c6d01f5a8116ec82cb561ec82f877b0a5026dfa3331974ad857e7
134477512021-10-19 10:47:341192 days ago1634640454
0x96a18C34...FD4349EC4
Nexo Nexo: WBTC Merchant Deposit Address
10.0109779 ETH
0x720f401cd6cb4ee928fe63591bc572cdb1197a01528dc32dd2e9a704a2b9eb06
133335992021-10-01 13:02:011210 days ago1633093321
0x14633EA8...42e7Ee042
0x96a18C34...FD4349EC4
0.002692 ETH
0xa04a5319594ddf7811246283e1f591bc684640980f470288c9acc316ecfeeccd
132734102021-09-22 4:22:271219 days ago1632284547
0x96a18C34...FD4349EC4
Nexo Nexo: WBTC Merchant Deposit Address
0.061233 ETH
0x61e56460ae24a2e324fecbf2134d6de2e2ffd7ca04597518866035d54ef344a2
132731252021-09-22 3:22:101219 days ago1632280930
0x96a18C34...FD4349EC4
Nexo Nexo: WBTC Merchant Deposit Address
0.023001 ETH
0x22d29baae347ebf59be8dfc8dba424412de234f4bc75bbf657c030828fd59622
132728672021-09-22 2:24:111219 days ago1632277451
0x96a18C34...FD4349EC4
Nexo Nexo: WBTC Merchant Deposit Address
0.12205925 ETH
0xa21ce61b6b889093e2277e022bb26d90ef88c3c98f9d037866ca2bc0f403fe70
132726082021-09-22 1:22:021219 days ago1632273722
0x96a18C34...FD4349EC4
Nexo Nexo: WBTC Merchant Deposit Address
0.093213 ETH
0x295557dcb8d8085bac5e1f658b362492ab02f808ffd1fea8cb301662e73191fc
132723572021-09-22 0:22:091219 days ago1632270129
0x96a18C34...FD4349EC4
Nexo Nexo: WBTC Merchant Deposit Address
10.16116629 ETH
0x1274f76d8e8066f2e1161dbb1240b021aef80f7d53996d242db981d2a2eb9fb0
131091092021-08-27 18:40:081244 days ago1630089608
BlockFi 4
0x96a18C34...FD4349EC4
0.040773 ETH
0xd516a07aa46678974fc2c1a41d63c089b56b0cbacdda60d4019231ed50cbe1b9
130980442021-08-26 1:35:521246 days ago1629941752
0x96a18C34...FD4349EC4
Nexo Nexo: WBTC Merchant Deposit Address
0.99246102 ETH
0xaf6440917535df1a708dd4870793139208ddfc3a1bf4b0ed82f3176f5179e5a8
130924422021-08-25 4:42:591247 days ago1629866579
0x96a18C34...FD4349EC4
Nexo Nexo: WBTC Merchant Deposit Address
5.06716305 ETH
0x7257f4dd3685fa54d4b7a00b5f762b30b166c3640766cc64fb9a598f5d663460
130855872021-08-24 3:26:031248 days ago1629775563
Bitstamp 2
0x96a18C34...FD4349EC4
0.004 ETH
0xd2a7fe4f9b22d14751b4999de5e32339a6659f6578ca49f20ab8601eff6b966a
130854842021-08-24 2:59:111248 days ago1629773951
Bitstamp 2
0x96a18C34...FD4349EC4
0.090407 ETH
0xc20e50d230b786f85cc2ba55d11a49a166604261be2ae5f25d0988b0eeb88010
130118282021-08-12 17:56:491259 days ago1628791009
0x96a18C34...FD4349EC4
Nexo Nexo: WBTC Merchant Deposit Address
0.02902916 ETH
0x9c68a6c50e1e7ff66316869cc6c00439a427d15b8458e615b8436aedd8753b36
130115332021-08-12 16:54:281260 days ago1628787268
0x96a18C34...FD4349EC4
Nexo Nexo: WBTC Merchant Deposit Address
0.260391 ETH
0xbb8e0cf69685c5446a768787416fdc80e49a4fbf88667fec8dcb1e5949a99de1
130059872021-08-11 20:12:391260 days ago1628712759
0x96a18C34...FD4349EC4
Nexo Nexo: WBTC Merchant Deposit Address
0.56723678 ETH
0x8746e32d6a51303297d82a782d3c6e89e3dce00b7cc7d6ef72c0ac22df98f4d3
130013432021-08-11 2:57:381261 days ago1628650658
0x96a18C34...FD4349EC4
Nexo Nexo: WBTC Merchant Deposit Address
0.26034086 ETH
0x4b72b565454333ba478bef3dacd27d8de25b685bc4b0f24ee86ef7011f75e033
129983932021-08-10 16:00:061262 days ago1628611206
0x96a18C34...FD4349EC4
Nexo Nexo: WBTC Merchant Deposit Address
0.3602573 ETH
0xadd6db5cbbb07bb7d03b12414e3b288ccebcdf367e154d15e56020d65c7d9735
129924832021-08-09 18:07:491262 days ago1628532469
0x96a18C34...FD4349EC4
Nexo Nexo: WBTC Merchant Deposit Address
0.04166772 ETH
0x264ba5b2549fb4d600e3f6042ed16e132c4f3578e0203ff0716249a8e37df6fb
129922032021-08-09 17:07:531263 days ago1628528873
0x96a18C34...FD4349EC4
Nexo Nexo: WBTC Merchant Deposit Address
0.25924376 ETH
0x6baaf4a945d923bfabbc0348299e085710cca39b2d8f12c0300d82389127e8e1
129909952021-08-09 12:42:241263 days ago1628512944
0x96a18C34...FD4349EC4
Nexo Nexo: WBTC Merchant Deposit Address
0.33430693 ETH
0x59113043bba77b05a8b3bdb993153ade833565748b58733809775737e0e2dde6
129793782021-08-07 17:39:591264 days ago1628357999
0x96a18C34...FD4349EC4
Nexo Nexo: WBTC Merchant Deposit Address
0.039233 ETH
0x8921a2495925c220c985bf20b064d43be4a275cfec47cc7a7cdeae623c45cb16
129790852021-08-07 16:40:031265 days ago1628354403
0x96a18C34...FD4349EC4
Nexo Nexo: WBTC Merchant Deposit Address
0.089423 ETH
View All Internal Transactions
Loading
Are you the contract creator? Verify and Publish your contract source code today!
Note: We also found another 230945 contracts with exact matching byte codes

 Decompile Bytecode 
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

Block Transaction Difficulty Gas Used Reward
View All Blocks Produced

Block Uncle Number Difficulty Gas Used Reward
View All Uncles
Loading
Loading

Validator Index Block Amount
View All Withdrawals

Transaction Hash Block Value Eth2 PubKey Valid
View All Deposits
Loading
[ Download: CSV Export  ]
[ Download: CSV Export  ]

A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.