get_settlement_announcements.py

SETTLEMENT_ADDRESS = 'bae24162efbd568f89bc7a340798a6118df0189eb9e3f8697bcea27af99f8f79'

async def read_spends(header_hash, node_client):
    coin_spends = await node_client.get_block_spends(header_hash)

    settlement_spends = []

    for coin_spend in coin_spends:
        if coin_spend.coin.puzzle_hash.hex() == SETTLEMENT_ADDRESS:

            settlement_spend = {
                "coin_name": coin_spend.coin.name().hex(),
                "puzzle_annoucments": []
            }

            puzzle: Program = coin_spend.puzzle_reveal.to_program()
            solution: Program = coin_spend.solution.to_program()

            result: Program = puzzle.run(solution)
            conditions = result.as_iter()
            for condition in conditions:
                if condition.first() == 62:
                    announcement_data = bytes.fromhex(disassemble(condition.rest().first())[2:])

                    announcement_id = sha256(coin_spend.coin.puzzle_hash + announcement_data)
                    #print(f'Announcement Id: {ann_id.hexdigest()}')
                    settlement_spend["puzzle_annoucments"].append(announcement_id.hexdigest())

            settlement_spends.append(settlement_spend)

    pprint(settlement_spends)