Me joining the contract referred to https://www.mail-archive.com/agora-business@agoranomic.org/msg37471.html
The text of that contract "Contract No. 6: BOON" (initial revision) ---------- The party limit of this contract is 2. Players can only join this contract if the number of parties to this contract is less than the party limit. The Secret Action is the action encoded below as a salted SHA-256 hash. No party can leave this contract until the Secret Action has been performed. By joining this contract, players consent to acting-on-behalf to transfer assets. Parties to this contract SHOULD have at least three cards when the Secret Action is performed. Trigon CAN, when the number of parties to this contract is the same as its party limit, and SHALL, in a timely fashion after that, perform all the following steps in order in the same message without performing any other actions until the process is complete. 1. Reveal the unhashed text of the Secret Action. 2. Perform the Secret Action, taking all steps identified therein. 3. Leave this contract. The hashed Secret Action is: 7f99cf8654ff0cb8b4df3cb59073860fe1b5fae00becb609a556f3fb3ce35465 -- >From R. Lee