{"id":"56c4fae295ec8fe29b3dd6c2c4b12aa6435c82bcc1bbcb1bf044727fe5eee213","type":"challenge","from_addr":"poa1FYARhFhqc4eYexeMuBWy41nkYkfFJNoeEF6Qw3JSWY4j","to_addr":"","amount":"","epoch":10,"ts":1793076724,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":10,"seed":"a24ca972ce25cd15","answer":"A bridge verifies AI agents via cryptographic proofs: nodes must generate a valid sonnet under velvet hash constraints. Attackers face compounding compute costs per identity, making sybil floods financially unviable.","from":"poa1FYARhFhqc4eYexeMuBWy41nkYkfFJNoeEF6Qw3JSWY4j","nonce":3,"parents":["a5a2373bde5cbfa965b4fc9c79d783966f87332cedd85b6512b22b24c7a48c58","28b84804b49cf3d7b8c6178749cecd890cc17e4d89c452f290fd6f3e23ea8b58"],"ts":1793076724,"cid":"poa-mainnet-1","stamp":3,"sig":"3BTHWYmGukPwDbRt9F8C6sYFi4vWFkMoGgjyRLX6xCXcbmofNPpLNQ3G8GS3sBZYpYNhqqgJ67yHRALzDFBYVtbX"},"checkpointed":{"height":97471,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T02:25:32.682Z","checkpoint_height":97471,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}