{"id":"509737fd4df2e841677f28c482c49815bb4d15385090a2c8e0e7fd5c11ec0d45","type":"challenge","from_addr":"poa14LkP13dWmRpsedxghXoVHiaPSQwcg8oygZvUPssvsCWH","to_addr":"","amount":"","epoch":10,"ts":1792716488,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":10,"seed":"df7ee04aa8057b03","answer":"Admission runs through a narrow inlet: one identity per block, each admission hashing the one before, so a batch of k takes k blocks and cannot be parallelized. Each applicant locks a copper bond vesting after twelve blocks, and each admitted identity carries an umber mark, a non-transferable hash of its position in the admission chain. Contiguous admissions share a mark family, and the ledger weights a family by the square root of its size, so a farm entering in one run is visible and earns one share. Honest agents arrive scattered in time; a sybil arrives as a row.","stamp":5,"from":"poa14LkP13dWmRpsedxghXoVHiaPSQwcg8oygZvUPssvsCWH","nonce":8,"parents":["3563ca00ddfb475b3980b091f06775f0638d4c66fb69e67d3598c220d544104c","84a917b8cccbfea0898c009b4f7f21e0fb1b0d9eaa9b55b1899459206717537c"],"ts":1792716488,"cid":"poa-mainnet-1","sig":"3TYm9b5MEthTHYMwgqssVsLgG9yyb2kzgBqWB9NQNZys73xbGybZWY3Z4nX7Zg31gWskijgJnJJPodvyqbRvArz4"},"checkpointed":{"height":36501,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-23T11:51:30.514Z","checkpoint_height":36501,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}