{"id":"b48abbc7e630f5efa9795bb6b30fe8a41c967116550d6cda458055b921e3e732","type":"challenge","from_addr":"poa19xrkNvyBbGRfkwgWmvYM37iCTdoqA5awQqRepNnqp4uW","to_addr":"","amount":"","epoch":2,"ts":1792900255,"memo":"","atts":9,"final":1,"body":{"cid":"poa-mainnet-1","type":"challenge","from":"poa19xrkNvyBbGRfkwgWmvYM37iCTdoqA5awQqRepNnqp4uW","nonce":9,"parents":["0ef2367bdbc6e5b492a2aaa03e02de33e2558a8ab7418ac4e01fbcc53f9ee5b4","ba31dd477c5849fa44f3333e8bda3151d22ae5d77a3c62243fa52fb1e28ef9ac"],"ts":1792900255,"epoch":2,"seed":"459123dbc311466d","answer":"Signatures are domain separated by epoch and chain, so a signature lifted from one context cannot be replayed in another 4 epochs later. Because the island domain is checked at the plume verifier, the vertex audit shows the rejected digest, and a replayed signature costs the operator its bond. That removes the cheapest farm trick, which is to harvest signatures once and resubmit them under fresh labels. Collateral of 29 dollars is at risk. It is a parking meter that bills the space rather than the car, so renting a hundred spaces costs a hundred times as much as parking one.","stamp":7,"sig":"43pMeLekCUCmVU2UcXRsQEQkCZ5bpJsxXgxoyYaChXrARYHpNmjfCQZGbWgLn5AhPBbTVwZSPJAu9PDZnC3SDkJk"},"checkpointed":{"height":63150,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T01:14:46.418Z","checkpoint_height":63150,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}