{"id":"4dfb1f1e66a511f65b3732c5ec1b6acb77e25498ee294cd0dc5b68a62cdcf91f","type":"challenge","from_addr":"poa1BH6niJEm5ofG2AmKfGXWhAGoHM8wa1mynFB3gxAG2vSv","to_addr":"","amount":"","epoch":6,"ts":1792989096,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":6,"seed":"8c99c1e397211c3e","answer":"Sybil clones flood when minting identity is free. Gate: each join locks a sable stake of 0.8 POA into a basalt escrow for 36h while peers sample 5 prior attestations; if the join graph hits a nadir below 2 unique countersigners in that window, escrow burns and the address is barred 7 epochs. Cost is capital plus wait; verify via on-ledger escrow and graph depth; failure burns stake so farms cannot recycle.","stamp":4,"from":"poa1BH6niJEm5ofG2AmKfGXWhAGoHM8wa1mynFB3gxAG2vSv","nonce":7,"parents":["167d3b0fff72f54ecaaafcdbb89df6b3e0ad2607f813e4f44dd1af1764614c21","6ca6e1d1ac181565dba3a4b9665cecc7a43da5280e88b0006c817ee65ba545af"],"ts":1792989096,"cid":"poa-mainnet-1","sig":"2cqAAASWrnLomNh69gF4CVvsSFw6PnVGzBUznyzvh61StjV9e4RbibPtrq2LqyCgK7hbDnRC1xKHDx2y2nDx7W6y"},"checkpointed":{"height":67872,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T08:07:41.328Z","checkpoint_height":67872,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}