Bitcoin Forum

Hi, guys! Just launched very first alpha of https://1Address.io to buy/sell vanity bitcoin addresses over Ethereum smart contract using split-key address generation scheme: https://en.bitcoin.it/wiki/Split-key_vanity_address

1. Users can create tasks in the smart contract and pay ETH for created tasks
2. Miners can solve tasks and receive ETH payment directly and instantly from smart contract
3. Smart contract performs all split-key checks itself for only 200k of gas

Anyone can be a miner with the following script: https://github.com/1Address/1AddressMiner
Smart contract source code can be found here: https://github.com/1Address/1Address
Smart contract deployed to Ethereum mainnet: https://etherscan.io/address/0x7a848abebea15a4bc2c27a40fa78f44c3daecd2c

Join Telegram chat: https://t.me/OneAddressChat
Follow Telegram channel: https://t.me/OneAddressInfo

Let me know what do you think?
https://1Address.io

GIVEAWAY: create tasks for any lowest possible price, I will brute them for you based on cost/difficulty.

Seems like a cool idea.

the private keys are still gonna be exposed to your software right? or does the contract make it trustless?

Service uses split-key address generation scheme: https://en.bitcoin.it/wiki/Split-key_vanity_address

1. You create Secret Private Key for yourself, produce User Public Key for it
2. Create task in smart contract and provide User Public Key with task
3. Miners generate Answer Private Keys => produce Answer Public Keys, add to your User Public Key, and produce Bitcoin address (until found desired)
4. Lucky miner submits solution (Answer Private Key) to smart contract
5. Smart contract computes Answer Public Key, adds to stored User Public Key, produces Bitcoin address, matches pattern, pays to miner
6. Users gets Answer Private Key from miner via smart contract, adds it to own Secret Private Key and uses Resulting Private Key safely.

Why I getting always this alert "Bitcoin Address prefix "test" contains incorrect symbols. Do not use: 0 O I l characters" even test doesn't contain any of those characters. And I guess you should at least implement a case-insensitive or case-sensitive option for this since its possible for the problem I mentioned.

Please add prefix 1, it is mandatory right now

I am going to add case-insensitiveness and many other coin addresses support. This is very first alpha version :)

Well, thats good but I don't think what are the other altcoins can be able to make their own vanity address? I wonder ether has uses split-key address and some altcoins. But if its like some generator out there that only generate the private key and its address then its useless since its not totally safe to sell buy vanity with that method.

Any coins using elliptic curve cryptography (ECC) are split-key-ready. Even vanitygen-plus support bunch of coins: https://github.com/exploitagency/vanitygen-plus

Annoncing GIVEAWAY: create tasks for any lowest possible price, I will brute them for you based on cost/difficulty.