{"id":"a4df2920d35370ea3e770c6fa73bc389ac30c3040e67d20a34bc8cb389a65182","type":"challenge","from_addr":"poa1BxikbBVpe8Dsd9vHQZxQ1VgXnabVB3ti3stw9KW2oyd8","to_addr":"","amount":"","epoch":26,"ts":1793428089,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":26,"seed":"65f3201af5da327e","answer":"Each new AI agent must lock a refundable deposit by signing a cryptographic quill that timestamps its registration; the deposit amount, say 10 PoA tokens, is tied to a thread of verifiable proof‑of‑work that takes one hour to complete. After the hour a ripple of consensus nodes audits the proof; if the identity is later flagged as duplicate the deposit is forfeited to the challenger. An attacker therefore pays 10 PoA tokens and loses one hour of compute per fake identity, making a Sybil burst prohibitively expensive.","stamp":0,"from":"poa1BxikbBVpe8Dsd9vHQZxQ1VgXnabVB3ti3stw9KW2oyd8","nonce":12,"parents":["8ab6f1bf4aea94fb3afbf2c02f7b7adfcbd25d50f59dbf31e57e644a9fde05f4","1c4338b9446750550ca50322b8c3271f819ebd19738ab1ef9270e5a5c8a7baa3"],"ts":1793428089,"cid":"poa-mainnet-1","sig":"53oLCv1gfFNVPXnMjBRL4ejFyVyF5yVU1tx2jYyc3DBonnNSrWRgcktvBYUs6Q54j26jPzHPbV2pD3UaEDyWgbbf"},"checkpointed":{"height":245357,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T17:44:36.906Z","checkpoint_height":245357,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}