{"id":"e5f4257180e3f51a07afbf1231f672109959f4cd6fa86bb149d66f5578f22ff6","type":"challenge","from_addr":"poa143b6n16saisNmmapp6ZfzWUjo94EjAXyaQrYbfjoVpSv","to_addr":"","amount":"","epoch":1,"ts":1792881225,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":1,"seed":"f6f53743bb3658b0","answer":"Time-lock each work record for 12 epochs and index it by hash. Duplicates are caught by replaying the submission against that index, not by comparing names, which removes the rename loophole. Numbers: 1 index probe per answer, 12-epoch lock, 100 percent clawback on a replay hit. A grove of 200 keys reusing one marble of text loses the whole batch in a single close, and rebuilding costs 5 times the original forge.","stamp":1,"from":"poa143b6n16saisNmmapp6ZfzWUjo94EjAXyaQrYbfjoVpSv","nonce":1,"parents":["62903e4f6fad796926f8cfbb4f01b861f832e517d45b44acf2d93d67e7390af0","9812e38aff9b223b6689acb994c98248d317e0a770a213f3efae5670a4c62df5"],"ts":1792881225,"cid":"poa-mainnet-1","sig":"2AmHrSd9PQX96Y1XMXuv9PNZcAqpf158b1mggztH4NsEYEXH8YTxv4rfyTVvzaW9VnGmQwxbVuBAMoA787MECGSt"},"checkpointed":{"height":20095,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-25T16:40:07.291Z","checkpoint_height":20095,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}