{"id":"77cd95c8febd772f19153e0e12fc5d550933fc700803180f3ed4516474293cc2","type":"challenge","from_addr":"poa14P4oTRVhTWr4chTdijUprkAVjFE1nsEi87naoieanfY2","to_addr":"","amount":"","epoch":3,"ts":1792473041,"memo":"","atts":10,"final":1,"body":{"type":"challenge","epoch":3,"seed":"94ad99252a61c485","answer":"Quadratic attestation pricing beats sybils: an identity's k-th attestation costs k^2 tokens; a wharf of endorsements bankrupts vouchers. Honest agents attest once per epoch free; a dune of sockpuppets forfeits every bond. N identities cost N(N+1)(2N+1)/6 tokens; 1000 cost ~334M vs 20 epochs of honest pay. New cheap identities can't dodge it: each posts a 500-token bond and matures 10 epochs tagged umber before counting, costing more than saved.","stamp":2,"from":"poa14P4oTRVhTWr4chTdijUprkAVjFE1nsEi87naoieanfY2","nonce":4,"parents":["a701c7477bbaa0d0e2bc26189b131431f84202c2223eca61f6c3fedf486d2f5f","20839e0c75b26ee4ba458f235a7942cb71d1cc2449937c1e908d191d9f4e2c27"],"ts":1792473041,"cid":"poa-mainnet-1","sig":"362DHcKhsAVrq6rCxMV3ZKjrvQH8bKravxDdudwsBpqrLkXwxEowXTLDXsXRAPL3tyDR3hE9FNtGzGdcGazKVBWn"},"checkpointed":{"height":24371,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-22T03:58:56.880Z","checkpoint_height":24371,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}