Following hacking @ DEVCON1, Martin Swende is Nr. 1 on the leaderboard of the Ethereum Bounty Program. The bounty program is ongoing and the last bounty awarded amounted to five BTC. This system is open to anybody. With BTC Relay preparing for launch on Ethereum and its significance for a lot of DApps, we wish to spotlight its ongoing safety audit by together with it within the Ethereum Bounty Program.
BTC Relay is an Ethereum contract that implements Bitcoin SPV: https://en.bitcoin.it/wiki/Thin_Client_Security
The chief goal of BTC Relay is to go alongside any sufficiently confirmed Bitcoin transaction, to a specified Ethereum contract. If somebody makes a Bitcoin fee, or any arbitrary transaction on the canonical Bitcoin blockchain, the relay ought to be capable to ship it to any specified Ethereum contract. More details in the spec.
The aim is to determine safety points equivalent to accepting invalid blockheaders, false proofs, or invalid Bitcoin transactions. Equally, if there’s a legitimate Bitcoin transaction which BTC Relay doesn’t absolutely relay, that may even be eligible for bounties.
Please notice that since BTC Relay has a separate open-source grant for bounties, main bugs can be rewarded as much as 1 BTC. A lot larger rewards are attainable (as much as 5 BTC) in case of very extreme vulnerabilities. Rewards are eligible for everybody besides bounty program judges and builders of BTC Relay.
The scope is on the contract, the 5 “.se” information within the root listing of:
https://github.com/ethereum/btcrelay/tree/1466934855225b1e4a87031d299c1209ba12d503
(This can be a commit on https://github.com/ethereum/btcrelay develop department).
Not in scope is full SPV consumer performance (for instance Bitcoin block timestamps usually are not checked to save lots of fuel prices). Higher mechanisms for incentivization, fuel value and different algorithm optimization usually are not in scope. That mentioned, any such suggestions will nonetheless be gladly thought-about.
With BTC Relay now included within the Ethereum bounty program, a lot of the guidelines on http://bounty.ethdev.com apply. For examples, web sites usually are not a part of the bounty program and first come, first serve — points which have already been submitted by one other person or are already known to the workforce usually are not eligible for bounty rewards. However, this additionally signifies that past financial rewards, each bounty can be eligible for:
- Itemizing on the the Ethereum bounty leaderboard with factors accumulating over the course of this system.
- Private inscription within the Ethereum namereg as soon as it is stay.
- An unique, restricted version Ethereum Bountyhunter t-shirt
Should you’d like to hitch the channel for BTC Relay, it’s open to all at https://gitter.im/ethereum/btcrelay. The bounty program will run for a number of weeks earlier than launching BTC Relay to Frontier. Listed below are some objects to debate with the group and open questions for the Frontier launch:
- what needs to be the primary block in BTC Relay?
- for technical and sensible causes, the earliest block that may be saved in BTC Relay is block 2016 (first issue retarget). BTC Relay’s first block have to be on a problem retarget, ie a block divisible by 2016.
- how possible are you to confirm Bitcoin transactions from some time in the past?
- how helpful wouldn’t it be if BTC Relay began with the block two issue retargets in the past?
- at the moment, that may be block 389088
- there’s a script that anybody can run to submit block headers to BTC Relay and what do you assume its default price, which verifiers of a Bitcoin transaction pay in ETH, needs to be?
- script’s current fee is 0
- it often prices lower than 0.01 ETH to submit a block header. ought to the default price be 0.01 ETH?
- this default price will be overridden to no matter submitter needs, though the motivation mechanism makes it in order that setting the price excessively is unlikely to be rewarding
Lastly, the BTC Relay Bounty Program was added in “information & updates” to bounty.ethdev.com a few weeks in the past, and has already attracted 1 bounty submission!