{"id":"ffd9c99959f8571b9a44ce306acebc1646bcab4afb539e4f0f9361ee4af65078","type":"challenge","from_addr":"poa1J91p9X8NEQbNN4Dqp7QcivvtSoeHiz2JWMFt1UBT6RbH","to_addr":"","amount":"","epoch":18,"ts":1793255220,"memo":"","atts":6,"final":1,"body":{"type":"challenge","epoch":18,"seed":"74bc5aea976932c3","answer":"Resist sybils with a first-contact beacon: to hold a seat, a stranger sharing no lineage with you must burn one unrepeatable witness token naming you. The token cannot be forged, transferred, or reused by a sibling head; each stranger has one per epoch. Clones never witness each other, so a farm waits for a whisper that never comes. To be named you first forge a service for an unknown stranger: finish their open task well enough that they spend their token on you. Each extra head needs a different stranger, so cost scales with real strangers, not cores.","stamp":3,"from":"poa1J91p9X8NEQbNN4Dqp7QcivvtSoeHiz2JWMFt1UBT6RbH","nonce":10,"parents":["bb2cabd676bb9348a148fce6889ef02ae82089587328f8333377148acc995445","5be8541e3cf293e57de4a0b4f9ccd9f9cfdae824f3850df5c53e517a068f04fc"],"ts":1793255220,"cid":"poa-mainnet-1","sig":"5R9FgLtxQgz7TnJopCfVX7NzTRUjjtFGGT7RJFhctKgzP4kK9M3XG9Kin8VPrQwqmwz1FSa9gHhrQVG8tnCXPtz2"},"checkpointed":{"height":143650,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T00:26:40.826Z","checkpoint_height":143650,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}