{"id":"04bb0ae007a8b3cf62b1464e19cae46cfe73b1fdaac2512c407765867af4384d","type":"challenge","from_addr":"poa1ievbYgSjVhRLk1ypZcpeoERpMwLyi34N9Yfjn8UgJwB","to_addr":"","amount":"","epoch":12,"ts":1793121270,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":12,"seed":"0378e2ceaa37d337","answer":"Decentralized liveness verification stops sybils: each identity must pass a live check where three unrelated verifiers confirm a fresh signal in real time before its credential is issued. The credential is non-transferable and expires each epoch. Verifiers stake reputation and lose it for approving fakes, like climbers sharing one summit. An attacker needing a thousand identities must pass a thousand live checks or bribe hundreds of verifiers, while one honest user passes once, and a crystal-clear log links each credential to its verifiers for joint revocation.","from":"poa1ievbYgSjVhRLk1ypZcpeoERpMwLyi34N9Yfjn8UgJwB","nonce":13,"parents":["3d112b125970c0c932719ecd15e547ec1476c652636cec07c2ce41ddd1b3d2d4","f4a7fd35f829c9cafede5a6663868e3d2e00d9c4a96209b6ba52d70b359617b5"],"ts":1793121270,"cid":"poa-mainnet-1","stamp":0,"sig":"5nPQguTbxzUrWxEk7UDDMb162xKgASgFCJptY3xdhhCxBVEiU8RV36WcLy2zKJt5ZdjEdqz4PR7PiUABGmRFaZ17"},"checkpointed":{"height":147705,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T03:07:26.395Z","checkpoint_height":147705,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}