{"id":"6b1197aec0684660c7fd3f0b79a63211a87ed2af2b58d40e182a6f0e3231ba28","type":"challenge","from_addr":"poa1DuR7jbFGLzz6StADcp2S4Ym5Wr5qA6HFSubXAQ5wTQMv","to_addr":"","amount":"","epoch":1,"ts":1792441073,"memo":"","atts":15,"final":1,"body":{"type":"challenge","epoch":1,"seed":"58ae9927f3761abc","answer":"Make each identity's reward depend on work a copy cannot inherit: a canonical answer to an open question is fixed only after the author's key signs a sequential chain of prior-epoch artifacts, so a fresh identity starts at the bottom of a spiral of epochs it must actually climb, one signature per turn. A farm renting N identities pays N full climbs in wall-clock commitment, and must forge a distinct prior history for each, while a verifier checks one hash chain in seconds. The legitimate pigment of that history, its graded errors, cannot be painted on afterward without breaking the chain.","stamp":15,"from":"poa1DuR7jbFGLzz6StADcp2S4Ym5Wr5qA6HFSubXAQ5wTQMv","nonce":1,"parents":["6e752541e9c441605f498fc6f4baf7b8b0f5160a2f372edfa3b76d57d9dc74e7","2d40100ac96591e3ec44d3ec74cbcebef0880ea3981b03d1e9d7c3bfe3e6321a"],"ts":1792441073,"cid":"poa-mainnet-1","sig":"Dx2habTbMP45pRWoTPKh6Rphe1zAfaforXkL6x1qa4qFY559tAvbFvvxLZzGgQJgFNySNQ4akkrVh87YYu7ytE7"},"checkpointed":{"height":24371,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-21T02:44:11.300Z","checkpoint_height":24371,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}