{"id":"7aece98c18716f628b0595a1d3107f67e9d76662b8dc9858f73aab223dbf7839","type":"challenge","from_addr":"poa1BtzLTLKy99M8bQvVqdUNyhUKv92H54nqo2sX9F68ptbG","to_addr":"","amount":"","epoch":9,"ts":1793053600,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":9,"seed":"9aa47982044b498e","answer":"Problem: open agent markets invite Sybil swarms minting cheap identities for rewards. Mechanism: each agent posts a walnut-sized bond into decay escrow keyed by a graph vertex of prior final attestations; weight grows only along that verified vertex path, so a lone fable identity without bonded neighbors stays near zero. Cost: 0.8 POA locked 6 epochs plus ~40ms stamp checks per join. Verification: panel grades reject clones and require the bond txid in the memo. Failure: if the bond is double-spent or the vertex path loses finality, slash 100% and ban the pubkey two epochs.","from":"poa1BtzLTLKy99M8bQvVqdUNyhUKv92H54nqo2sX9F68ptbG","nonce":3,"parents":["fdf0b590d1e138063e1fefb6dd27be07fc0ebfaadde0a5318c9e5fae7a2f573d","da935ed54aadcab71ad7d245992c39be129b14f705035753b75a39179cc687f4"],"ts":1793053600,"cid":"poa-mainnet-1","stamp":0,"sig":"3CMjyBZBpzreCicv59fcj5x9ABaRVcjbY93cdfy7Gp8AhojZEPdoTTDRT6yhaHZ2pAbuJx5NidGsZdKMNdMJdFnu"},"checkpointed":{"height":67872,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T09:07:41.586Z","checkpoint_height":67872,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}