Category Archives: Blog

A Quick Look At Parity’s Token Registry Smart Contract

Created Mar 14 2017, last updated Aug 1 2017. Address: 0x5F0281910Af44bFb5fC7e86A404d0304B0e042F1

Posted in Blog | Tagged , , , | Leave a comment

A Quick Look At Parity’s Signature Registry Contract

Created Mar 14 2017, last updated Aug 1 2017. Address: 0x44691B39d1a75dC4E0A0346CBB15E310e6ED1E86

Posted in Blog | Tagged , , | Leave a comment

20 ETH (And More) Bug Bounty On The ConsenSys And Whitelisted Multisigs

There was a vulnerability that allowed hackers to steal USD 30 million from the Parity multisig wallets last week. I work with clients to secure their crowdsale and other contracts, and ultimately the funds end up being secured by a … Continue reading

Posted in Blog | Tagged , , , , | Leave a comment

Aigang Network Presale Contract Audit

Aigang Network Presale Contract Audit

Posted in Blog | Tagged , , , , | Leave a comment

Parity Multisig Recovery Reconciliation

Parity Multisig Recovery Reconciliation

Posted in Blog | Tagged , , , | Leave a comment

InvestFeed Crowdsale Audit

InvestFeed Crowdsale Audit

Posted in Blog | Tagged , , , , | Leave a comment

Santiment’s Crowdsale Contract Audit

Santiment’s Crowdsale Contract Audit

Posted in Blog | Tagged , , , , | Leave a comment

openANX Decentralised Exchange Token Sale Smart Contract

openANX Decentralised Exchange Token Sale Smart Contract

Posted in Blog | Tagged , , , , | Leave a comment

Status Network Token Audit

Status Network Token Audit

Posted in Blog | Tagged , , , , | Leave a comment

Dao.Casino Crowdsale Contract

Dao.Casino Crowdsale Contract

Posted in Blog | Tagged , , , , | Leave a comment

FunFair Crowdsale Contract Audit

FunFair Crowdsale Contract Audit

Posted in Blog | Tagged , , , , | Leave a comment

Another USD 35 Million BAT-s**t ICO 99.9995827118343% Over In Less Than 1 Minute

The first transaction 0x64438300… was submitted in block 3798640 at May-31-2017 02:24:35 PM +UTC. From batICOData.tsv, 99.9995827118343% of the 156250 ETH was contributed in the first 3 blocks to 3798642 at Wed, 31 May 2017 14:25:29 UTC. The last non-zero … Continue reading

Posted in Blog | Tagged , , | Leave a comment

Sikoba Announces the Launch of Presale ahead of its ICO

Sikoba Announces the Launch of Presale ahead of its ICO. I’m working with Sikoba.

Posted in Blog | Tagged , , | Leave a comment

Tokencard ICO Bug Nets SNGLS Investors Up To 1,100% Extra

Tokencard ICO Bug Nets SNGLS Investors Up To 1,100% Extra. I am currently reconciling the numbers – see https://github.com/bokkypoobah/TokenCardICOAnalysis

Posted in Blog | Tagged , , | Leave a comment

Encrypto Telecom Launches ICO To Bring Blockchain Technology To Global Telecommunications

Encrypto Telecom Launches ICO To Bring Blockchain Technology To Global Telecommunications The crowdsale is being partly powered by a smart contract built by yours truly – see https://github.com/bokkypoobah/CustomerDepositFactory.

Posted in Blog | Tagged , | Leave a comment

AUD 1 Million Traded On CryptoDerivatives.Market Today

From CoinMktCap:

Posted in Blog | Tagged , | Leave a comment

TokenCard ICO Raises USD 16.7 Million In 30 Minutes 13 Seconds

(work-in-progress) Note: Do not transfer your TKN tokens yet. There are some errors in the allocation of tokens and TokenCard may be deploying a new TKN token contract. See TKN Creation Event Updates and Found a major TokenCard ICO token … Continue reading

Posted in Blog | Tagged , , , | Leave a comment

Gnosis Auction Ends In 10 Minutes 48 Seconds, Top 3 Contributions Comprising 50% Of Funds Raised Executed By BiddingRing Contracts

The Gnosis auction was filled in super quick time. 250,000 ETH (USD 12.5 million @ USD 50 / ETH) was contributed to the GnosisAuction smart contract from 623 unique accounts within 10 minutes and 48 seconds. As the dutch auction … Continue reading

Posted in Blog | Tagged , , | Leave a comment

Development, Testing And Security Audit Of The CustomerDepositFactory Smart Contract

See Customer Deposit Factory and Security Audit Of The CustomerDepositFactory Smart Contract.

Posted in Blog | Tagged , , , | Leave a comment

BetterAuction Smart Contract – Testing, Security Audit, And Assisting With The Development

See BetterAuction and Security Audit Of The BetterAuction Smart Contract.

Posted in Blog | Tagged , , , | Leave a comment

Less Than A Day Left For The DAO To ETC Refund Withdrawals. Update – Extended To Jan 10 2018.

(Originally written Apr 14 2017. Updated Apr 15 2017 with the news that the WhitehatWithdraw contract expiry has been extended to Jan 10 2018). News – Deadline Looms on Ethereum Classic DAO Withdrawals and The DAO Ethereum Classic Refund Effort … Continue reading

Posted in Blog | Tagged , , , , | Leave a comment

Assessing The ERC20 Token Exchange Withdrawal Bug / Exploit

Reddit post Worry-some bug / exploit with ERC20 token transactions from exchanges and the Golem post How to Find $10M Just by Reading the Blockchain. This problem seems to be about how the exchanges implement their withdrawal functions and seems … Continue reading

Posted in Blog | Tagged , , , | Leave a comment

The Sikoba Presale Smart Contract Security Audit

(Created Mar 08 2017. Updated with test results Mar 14 2017. Updated with multisig wallet contribution test results Mar 23 2017.) I was asked to review the Sikoba presale smart contracts before the upcoming Sikoba presale crowdfunding event. This page … Continue reading

Posted in Blog | Tagged , , , | Leave a comment

Using The Ledger Nano S With MyEtherWallet, Go Ethereum and Parity, Without Chrome

Originally written Mar 10 2017 with title “Can I Use The Ledger Nano S Without Chrome?”. Updated Mar 11 2017, renamed to “Using The Ledger Nano S With MyEtherWallet And Go Ethereum, Without Chrome”). Updated Mar 12 2017 with Parity … Continue reading

Posted in Blog | Tagged , , | Leave a comment

Ethereum Decentralised Exchanges

(Work in progress) There are now a few decentralised exchanges on the Ethereum blockchains, and this is a quick look at the technology behind these exchanges: CryptoDerivatives.Market EtherDelta EtherEx EtherOpt MakerMarket, being rebranded to OasisDEX   CryptoDerivatives.Market Built by yours … Continue reading

Posted in Blog | Tagged , | Leave a comment

The Incent Coffee Token Smart Contract Security Audit

The Incent Coffee smart contract is currently being used to test out the Waves <-> Ethereum block swapper at https://blockswap.incentloyalty.com/. A version of the contract has been deployed to 0x2c875e5ea4706b1978a41b59edf2d3af31d60e70. This contract was written by Bok Consulting Pty Ltd in … Continue reading

Posted in Blog | Tagged , , , | Leave a comment

A Quick Look At Melonport’s ICO Contract

Melonport ICO is over after 13 minutes and 17 seconds as the funding goal of 227,000 ETH was reached. Note that MLN tokens are ERC20-compliant but cannot be transferred before endTime = 1489575600 or Mar 15 2017 @ 11:00am (UTC), … Continue reading

Posted in Blog | Tagged , , , , | Leave a comment

Decentralized Capital’s Tokenised Fiat Currency. A Quick Look At The Smart Contracts

Here is Decentralized Capital’s website, their FAQ, and their Token Contracts page. Unfortunately you need to be verified to use this decentralised exchange. Here is their IDEX decentralised exchange screen: Here is their USD.DC verified smart contract deployed at 0x01a7018e6d1fde8a68d12f59b6532fb523b6259d: … Continue reading

Posted in Blog | Tagged , , , | Leave a comment

Decentralized Capital’s IDEX Is Live on the Mainnet! And A Quick Look At The Smart Contract Code

IDEX Is Live on the Mainnet!. Following is the verified source code from 0x63091244180ae240c87d1f528f5f269134cb07b3:

 

Posted in Blog | Tagged , , , | Leave a comment

BokkyPooBah Wuz Here! In Block #3,000,000! Yaaay!

I got my timing right and had the following validated contract mined in block #3,000,000 in the transaction https://etherscan.io/tx/0x7c03009d52ec50069adb4311d5225fe2249ce5afb3a9951af258f0f680efb19a at the address

Posted in Blog | Tagged , | Leave a comment