30k+1k: both BIP48 account numbers (m/48'/0'/acct'/2') for both cosigners, or both full key origins. Electrum-encrypt to this tx's input pubkey (also love the puzzle <3)
OP_RETURN · Output 0Block 971,276
WORDS ON THE CHAIN
A message written into Bitcoin.
Public transaction data, shown as written. The writer’s identity and claims are not verified.