Author: Joseph Poon 2016-08-12 21:28:53
Published on: 2016-08-12T21:28:53+00:00
In an email conversation between Rusty Russell and Joseph Poon, they discussed the use of hash trees in Bitcoin transactions. They talked about using a tree of chained preimages and hashes as a part of the tree itself to save on wire usage. This chain would look like preimage->hash->preimage->hash instead of preimage->preimage. This way, the wire message could only be sending next_revocation_hash, with the prior revocation preimage being revealed automatically. Pubkey revocations would require using privkeys+pubkeys instead of preimages+hashes, which ups the cost/complexity. However, they agreed that it was better to stick with hash trees unless a significant win is achieved.
Updated on: 2023-05-24T00:09:58.614665+00:00