80 Bytes of embedded data via OP_RETURN.

brainwallet / brainwallet.github.io

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https://brainwallet.org

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80 Bytes of embedded data via OP_RETURN. #50

Closed WhatTheF closed 9 years ago

WhatTheF commented 10 years ago

You create an additional txout with value 0 and script "OP_RETURN data".

https://blockchain.info/tx/9cb4a5c615124f977c9bc7e3e6f236bc68b7c1ded414d68ae4d3d87e15ca3df6?show_adv=true

brainwallet commented 9 years ago

I don't know how it happened. There's no OP_RETURN or "Hello World From D" in the code and the site is HTTPS protected. Users allowed to create arbitrary transactions.