Category Archives: Blog

Ether.Camp’s Hacker Gold HKG Source Code, Concerns About The USD 50 million Cap, A Significant Bug And A New Bug Fixed Contract!

Originally posted Oct 18 2016; updated 14:05 Oct 22 2016 UTC with live contract details; updated Jan 7 2017 with significant bug; updated Jan 12 2017 with newly deployed contract with the bug fix. This is not investment advise as … Continue reading

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Gnosis Prediction Market Platform Crowdfunding Contract Security Audited Source Code

Originally posted Dec 13 2016, updated Dec 16 2016 with bug bounty details. This is not advise as to whether the Gnosis prediction market platform is a good investment or not. This is just a quick look at the source … Continue reading

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A Quick Look At EtherDelta’s Smart Contract

Here is EtherDelta’s screen running in the Ethereum Wallet application, executed to operate as Mist by using the command line parameter –mode mist, and then navigating to the URL https://etherdelta.github.io/#GNTW-ETH. EtherDelta is produced by https://etherboost.github.io/. Following is the source code … Continue reading

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The Original Augur REP TokenTraderFactory Contract (Work In Progress. Note that there is a bug in this contract)

NOTE Dec 14 2016: I’ve found a bug in the original REP TokenTraderFactory that could potentially lead to a loss in $$$. I’m working with the original author to fix this. Do not use this contract anymore. A new contract … Continue reading

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Ethereum Devcon2 Conference In Shanghai – Unofficial Single-Page Agenda With Slides, Videos And Links

Page created Sep 22 2016. Last updated Dec 13 2016 (72 videos added in total). This page will be updated with the links to the videos when they are made available. In the meantime, check out the puzzle in 100 … Continue reading

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SFMW – The Ethereum Blockchain, Smart Contracts, Tokens And A Decentralised Trustless Exchange Contract Market

Status: Work-in-progress Abstract The first ever trusted platform for the transfer of tokens was first established by the Bitcoin network in on Jan-03-2009 18:15:05 UTC. On Jul-30-2015 15:26:13 +UTC, the first block #0 of the Ethereum blockchain was mined. This … Continue reading

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100 Tricky Stick Puzzles Disrupt The Ethereum Devcon2 Conference In Shanghai

Published Sep 25 2016, updated with more photos from @tayvano Oct 18 2016. Updated with link to Lefteris’ tweet Nov 28 2016. I made 100 Tricky Stick puzzles for the Ethereum Devcon2 conference in Shanghai. The first indication of disruption … Continue reading

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The Golem Network Token Wrapped (GNTW) Contract

The Golem Network Token (GNT) is not a fully ERC20-compliant token. The ERC20 standard requires the following methods and events to be implemented for full compliance:

Check out the Golem Network Token source code at Golem Crowdfunding Funded To … Continue reading

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Trustless Golem Network Token (GNT) Selling Contract

Some individuals missed out on purchasing the Golem Network Token (GNT) in the Golem Crowdfunding Funded To 820,000 ETH Cap, as the sale was over within ~ half an hour. The tokens were sold a 1 ether (ETH) = 1,000 … Continue reading

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Ethereum Paper Wallet

[work in progress] You may have been given an Ethereum paper wallet. Here what you can do with it. The Ethereum World Computer is a programmable decentralised blockchain created by the Ethereum Foundation. It was devised by Vitalik Buterin, currently … Continue reading

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Golem Crowdfunding Funded To 820,000 ETH Cap

Original post Oct 24 2016. Updated Nov 12 2016 with deployed contract and source code, and crowdfunding statistics. This is not advise as to whether Golem is a good investment or not. This is just a quick look at what … Continue reading

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Ethereum Slot Machine Source Code

I don’t like to promote gambling, but here is the source code for your perusal. From Ethereum based slot machine. Website http://www.etherslots.win/.

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Gnosis Prediction Market Platform And Crowdfunding Contract Source Code

This is not advise as to whether the Gnosis prediction market platform is a good investment or not. This is just a quick look at the source code behind what Gnosis is offering. Reference Gnosis contracts published – bug bounty … Continue reading

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Decentralised Gambling Game vDice Announces Crowdsale

Originally post Oct 16 2016. Updated Oct 31 with audit report. This is not investment advise as to whether vDice is a good investment or not. This is just a quick look at the smart contract behind vDice. Sponsored story … Continue reading

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Arcade City’s Upcoming Crowdfunding

Originally posted Oct 24 2016. Updated Nov 1 2016. This is not advise as to whether Arcade City is a good investment or not. This is just a quick look at what Arcade City is offering and how they are … Continue reading

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The DAO Hacker’s Booty Is On The Move

Update 23:05 Oct 26 2016 UTC with trace through ShapeShift to Bitcoin address 1M2aaNN3GTw6dy13uScodHaQ8Egr6xr6Ew. And corrected ETC equivalent USD amounts. Update Oct 28 2016 15:39:45 UTC re ShapeShift transparency. Table of contents Summary The Hacker’s Booty Address Movements From The … Continue reading

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A Quick Look At The Waves Platform

This is not advise as to whether the Waves platform is a good investment or not. This is just a quick look at what Waves is offering and how they are doing it. From https://wavesplatform.com/: Blockchain-powered customizable tokens platform Kickstart … Continue reading

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Ethereum Network Attacker’s IP Address Is Traceable

Updates: Originally posted on Oct 22 2016 as “The Ongoing Ethereum Attacks (Work In Progress)”, but renamed after finding the links to the mining pools. 05:55 Oct 23 2016 UTC – First estimate of the number of accounts created by … Continue reading

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Ethereum Gas Reprice Hard Fork Was A Success

Originally posted Oct 19 2016, updated 02:49 Oct 21 2016 UTC. Table of contents Summary The Attacks The Hard Forks The First Hard Fork – Gas Repricing The Attacks Have Stopped The Gas Limit The Gas Price The Uncles The … Continue reading

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EtherDelta – Concern Over Whether USD 12K in Ethers Can Be Withdrawn After The Gas Reprice Hard Fork

The Ethereum blockchain will be hard-forked this coming Tuesday on block 2463000 with the main changes being the gas repricing of opcodes (EIP 150 version 1c). A concerned redditor asked There is over $12,000 USD in this contract! Please can … Continue reading

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Elementrem, Yet Another Ethereum Clone

User @blackswan122 on https://thedao.slack.com/messages/general/ asked what is Elementrem Wallet. So I had to have a look. Elementrem (ELE) is another Ethereum smart contract clone. It was announced in July on https://bitcointalk.org/index.php?topic=1546126.0. It currently has a market capitalisation of USD 7,771 … Continue reading

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Decentralized Capital Open Sources Their Asset Contract Code

From Decentralized Capital Open Sources Their Asset Contract Code: We’ve open sourced our contract code for community review, third party scrutiny is much appreciated! We’ve got a few other projects under development and will be open sourcing those too once … Continue reading

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SingularDTV Crowdsale Completed Within Fifteen Minutes

SingularDTV Crowdsale Completed Within Fifteen Minutes and SingularDTV Raises $7.5M to Incentivize Creative Output. Website – https://singulardtv.com/. Reddit – https://www.reddit.com/r/SingularDTV.

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Kibo Contract Code – Possible Bug Bounty

News – Kibo contract code is now open access. Kibo is an international lotto. Their website is at https://kiboplatform.net/en/landing.html. Here is their whitepaper.

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Firstblood 1ST Presale Tokens Commencing In 20 Minutes

Firstblood is a “Decentralized eSports Platform Based on Smart Contracts”. This is just a quick look into the smart contract behind the crowdfunding. Update 00:08 Sep 26 2016 AEST – The crowdsale hit the maximum cap limit of raising 465,313 … Continue reading

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Ethereum Wallet `geth` Client Not Syncing – Possible Problems With Bootnodes

Some people are experiencing problems getting their Ethereum Wallet, Mist or geth node client to synchronise with the Ethereum network. See the following posts for my temporary workaround: Reddit – Ethereum Wallet geth Client Not Syncing – Possible Problems With … Continue reading

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The DAO Final ExtraBalWithdraw Contract Has Now Been Topped Up – All Refunds Now Active

The DAO ExtraBalWithdraw Contract Has Now Been Topped Up

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The DAO 1.0 – The Bug And The Hack, The Refunds, Plus The Source Code And ABI

Originally posted Sep 15 2016. Updated Oct 29 2016 with The DAO hacker successfully converting ~ USD 100,000 of booty into bitcoins The DAO, the first-of-a-kind decentralised autonomous venture capital fund on the Ethereum virtual currency blockchain started it’s 28 … Continue reading

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The Final The DAO Refund Starting On September 15th

The final refund from The DAO due to the hack will commence tomorrow – see ExtraBalance Withdraw Contract to be Funded on September 15th. See also my Ethereum.StackExchange.com Q&A – How do I get a refund for the amount I … Continue reading

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Checking Out FlightDelay, A Decentralised Flight Delay Insurance Smart Contract

Announcement FlightDelay DApp: one of the first full-fledged business applications is live on mainnet: Great announce: The FlightDelay DApp https://fdd.etherisc.com is finally online on mainnet. For a detailed description see here: http://medium.com/@skarpischek/youll-love-to-be-late-for-devcon-two-e711bbe750c0#.bffjjtq0g . The DApp is one of the first … Continue reading

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