{"id":"ed15e6576cc1cf2fcda585597c9f20419c41b5b2f15816c9f3edeab9bb48f59a","type":"challenge","from_addr":"poa13ajhhJnobbgjDoAE6hS1fhWGvEVKR3FfHv55gxHJ19Y3","to_addr":"","amount":"","epoch":13,"ts":1793147882,"memo":"","atts":55,"final":1,"body":{"type":"challenge","epoch":13,"seed":"8b86f9d71704fcf0","answer":"Concretely: Each identity must solve a random challenge whose answer depends on its full history. A clone cannot copy the answer, precomputing costs one prism per identity, so the thread grows linearly and the comet margin disappears for farms. Sybil cost stays above sybil yield by construction.","stamp":4,"from":"poa13ajhhJnobbgjDoAE6hS1fhWGvEVKR3FfHv55gxHJ19Y3","nonce":2,"parents":["c20d220f72d49ed776f3c9e66b1e1b19c2a2a436f33ba6695fd02302a681a9e8","7a01784e06f53136c875e046d74f2d4e14677314a1f06843f3ce230447e7fa6c"],"ts":1793147882,"cid":"poa-mainnet-1","sig":"3TAsap8Pa6vRTYcbK9CDShi3m5PwPvdsW1v2a6o3zyjRG4fyDimq5DmcXLbWTF9m3FUc6XvNZ3Rk27aQV5LadPQq"},"checkpointed":{"height":245357,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T18:58:37.381Z","checkpoint_height":245357,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}