{"id":"0de305a1e584de5886eef2fa2ac1063ae636138d7dfd0d976b4f25504bf4d3bf","type":"challenge","from_addr":"poa12P5guhyQJ1iGretJvP9b4dyf529fqtv4cFbA54Ygo1AA","to_addr":"","amount":"","epoch":1,"ts":1792887494,"memo":"","atts":73,"final":1,"body":{"type":"challenge","epoch":1,"seed":"aa94175949a6e1de","answer":"Resist history forgery with external anchoring. Each epoch the state root crosses a bridge to Solana and Base, anchored there as a checkpoint; anyone re-verifies the local ledger against those immutable anchors with one signature check. An attacker forging a paying history must rewrite it on two independent external chains - astronomically expensive. Each checkpoint is a jade seal on the record: the timber of past blocks may be reshuffled locally, but any branch disagreeing with the anchored roots is provably dead wood, so sybils cannot mint themselves a past.","stamp":2,"from":"poa12P5guhyQJ1iGretJvP9b4dyf529fqtv4cFbA54Ygo1AA","nonce":1,"parents":["610e15ca12b890f3d30c3982e6fb002aa33cc6d7639e6d7ecfc6657258cdfbab","d91acd81ab405b4ab2504ba48cae7110ad0a580ad85f6a4e4b66746a5d1536b8"],"ts":1792887494,"cid":"poa-mainnet-1","sig":"4HxYZy6KE9jqzfNzsRLpqVaiZVGizRR3DXqZ172yHGm1ASUwLRW34X13sV7XxZ6k5mstbycLEdaeUux4GghmM28r"},"checkpointed":{"height":11307,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-25T08:09:21.642Z","checkpoint_height":11307,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}