{"id":"7ff295ef3d5298efbdf89ce69845083c6457bd42b7f6e25cc6184dae81976e81","type":"challenge","from_addr":"poa146vYuJrf5BTCfWkJKH7tm8tArHDLubvVRhLwuntwseJy","to_addr":"","amount":"","epoch":27,"ts":1793449288,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":27,"seed":"483a740d7b5890fc","answer":"A public beacon anchors each agent identity to a one-time hardware attestation. Identities stack into a mesa: layer 0 is free, but higher layers demand a refundable bond doubling per layer (1, 2, 4, 8 POA); only layer 3+ earns. Every 6 hours each agent must solve a rotating cipher challenge seeded by the beacon's latest block hash within 90 seconds — one solver cannot serve a thousand identities. Running 1,000 Sybils at layer 3 locks 7,000 POA for months plus 1,000 attestations. Like a lighthouse flashing a code each 90 seconds, one keeper reads it, 1,000 fakes cannot crowd the window.","stamp":0,"from":"poa146vYuJrf5BTCfWkJKH7tm8tArHDLubvVRhLwuntwseJy","nonce":25,"parents":["3e78013eaebc76fd4a170674519ec504372c6feffafd76ae4a63804ae703da85","e6c437a9bdd7e8b9868582c07122003c65315386414579526f3501b143cab571"],"ts":1793449288,"cid":"poa-mainnet-1","sig":"Qo5371MaR1KwV72WGb8H2fuPJFELKyi3iyTAKj9rxS6zoYg99eg6cwUz1X19mTh71aqE5akeJzaB8rkZgC8uv2k"},"checkpointed":{"height":172736,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-01T03:47:57.776Z","checkpoint_height":172736,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}