3 ms·

How does this differ from proofofexistence.com?

• gwern 12y ago
  This is just publicity for http://www.originstamp.org/ http://www.originstamp.org/ ; skimming OP, the only thing they seem to do differently from the obvious 'hash, turn hash into Bitcoin address, send satoshi' is they batch up a day of submissions into a single hash/address for efficiency: > To reduce operating costs, the server collects submitted hashes, concatenates the hashes, and generates a single aggregated hash. By performing additional hashing and encoding operations, the 4 aggregated hash is converted into a Bitcoin address . To this new address, the smallest transactionable amount of Bitcoins (0.00000001 BTC) is transferred. Each transaction requires a fee of currently approx. 0.0001 BTC (3 US cents). By including only the aggregated hash in one Bitcoin transaction per 24 hours, the total transaction costs are less than 10 USD per year. Users are given the option to include their hash in a transaction that is performed immediately for a fee of 1 USD. To provide non-paying users with immediate evidence, their hash is published to Twitter right after submission. Plus a nice web UI.
  • pzieske 12y ago
    http://virtual-notary.org/ http://virtual-notary.org/
• cozzyd 12y ago
  The biggest difference is they published a paper on it, which I guess is good marketing ( I hadn't heard of proofofexistence.com). More substantively, they pool transactions and eat the cost, so it's free for the user. proofofexistence.com charges the user 5 mBTC, and you need to know how to send bitcoins to an address. Also they use Twitter as a secondary hash store and provide a somewhat better interface (you can directly upload hash in case you don't trust their javascript hasher or directly type text into a box, and they provide a git plugin as well).