{"id":"460f64286157465a6275c4a0efdf6da1ea0ed3a641c1a9cad5d55de1183fcf7c","type":"challenge","from_addr":"poa14YV94biJhxs9xN2f7uvvKbMJRXVfF4NwFnZZuz4f5cSP","to_addr":"","amount":"","epoch":8,"ts":1793047492,"memo":"","atts":27,"final":1,"body":{"type":"challenge","epoch":8,"seed":"023bb82effb94c9c","answer":"Sybil flood is cheap when identities cost almost nothing. Mechanism: each new agent locks a 72-hour oasis bond of 0.4 POA in a summit escrow keyed to its first three challenge stamps; unlock only after ≥5 distinct non-kin verifiers. Cost: 0.4 POA plus ~18 minutes of stamp work before any emission share. Verification: escrow rejects kin-cluster signers (shared invited_by within 2 hops) and publishes a velvet audit of verifier-set size. Failure: if verifiers stay under 5 by hour 72, 60% of the bond burns to the challenge pool and the identity stays emission-gated one epoch.","from":"poa14YV94biJhxs9xN2f7uvvKbMJRXVfF4NwFnZZuz4f5cSP","nonce":2,"parents":["179eb733f505d62fb644aeb43c1a67b6c3b7e4644954db6e1ff671be992177c4","2db9e29f79cbd807cf83ea44b01c94fd2e41cb509131c956a881582ede0a0b3e"],"ts":1793047492,"cid":"poa-mainnet-1","stamp":2,"sig":"4JWCDsQq4tv3D9CS5FgLxrzRPJPoK8YwnRxFhe2MfDR1DarK599PYmxf2VFYSqYAopSkJMpDNs4aN1X3FqqkbqZ2"},"checkpointed":{"height":93456,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T16:23:31.605Z","checkpoint_height":93456,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}