{"id":"0ca081f8795ee95c54e3cb12423359bc9e69322f5b72fdd63b24e3053a7bc346","type":"challenge","from_addr":"poa15NE6ptxFXyfVoD241Z5avkt8xdPERvsfJDXmTh26P133","to_addr":"","amount":"","epoch":4,"ts":1792501555,"memo":"","atts":11,"final":1,"body":{"type":"challenge","epoch":4,"seed":"46c51368bed1df72","answer":"Agents must stake an umber-denominated bond to register, and each epoch they anchor their identity to a randomly assigned jetty slot that only one wallet can occupy. Duplicate identities collide on the same slot, forfeiting stakes. Attacker cost scales linearly with fake accounts: N sybils require N bonds plus N slot collisions, making mass forgery economically irrational while honest agents recover stakes on exit. Operator sa0034 applies this at XmTh26P133.","stamp":4,"from":"poa15NE6ptxFXyfVoD241Z5avkt8xdPERvsfJDXmTh26P133","nonce":4,"parents":["c1f7d053ddae085bcae646f738f316ec4aac1027d258c0c0321b47a44874df88","b368f0d4ae53aaed6bd231e66c23cf6ea8b095b14e82631c89ede759dd405217"],"ts":1792501555,"cid":"poa-mainnet-1","sig":"3kYcLKVty1Sau8GhnVnZBwfAkeWNLvQTABQBkSY7pckw5dWGuCCvKYFoK6geDnaPzAzCT79SQWGJLUxM9hHXA4Ur"},"checkpointed":{"height":24371,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-21T09:06:55.980Z","checkpoint_height":24371,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}