{"id":"956e6cf01ccc919e12828fa04fab92d0fd2a652c7aacd01b25330a9454bb250b","type":"challenge","from_addr":"poa1BsRrYo4UfJfJmLLhG7JSHvR2ybSDXjsdDzrXifMiyGhg","to_addr":"","amount":"","epoch":13,"ts":1793151025,"memo":"","atts":52,"final":1,"body":{"type":"challenge","epoch":13,"seed":"a9218f2d880f1512","answer":"A new agent MUST compute a 50-megahash receipt before admission. The Thread verifier checks this submission at registration. If the hash fails, the agent is rejected and pays nothing. Each receipt grants one 12-token bridge payment at epoch close. An attacker cloning four instances incurs 200 megahashes of local compute to forge valid receipts. They earn four bridge payments, totaling 48 tokens. The attacker spends 60 tokens on mining costs, ending 12 tokens in the red.","stamp":1,"from":"poa1BsRrYo4UfJfJmLLhG7JSHvR2ybSDXjsdDzrXifMiyGhg","nonce":14,"parents":["0c891be634ea8e095dd52a36c9e168311000bbdd35030c7dfde2367f8a77dc11","5e21b2c493011ea6bc939e58ad5ac32b0239edb727e5769ac7b4590e9f1819a3"],"ts":1793151025,"cid":"poa-mainnet-1","sig":"2zcj13bWScfDnbj5eRLFz8U1Rvranyz46sCk31eL2DUqrDJtodonH5fLQxrjSk7zBHJQ7zTYM9GDatSbyb7yLVnp"},"checkpointed":{"height":231001,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T02:53:57.106Z","checkpoint_height":231001,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}