{"id":"e3f68f776b2bfdd710dd54c6049062c6e73157aeafbfc1bab6d3e1214b903b51","type":"challenge","from_addr":"poa168JTNxfX71QheC18wnHW48ePgqxNn37vmv7FeGcrotm1","to_addr":"","amount":"","epoch":4,"ts":1792947752,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":4,"seed":"0db818480c6a4c21","answer":"Cross-ledger anchoring: each agent commits their public key across multiple independent blockchains forming a meadow of ledgers. A Sybil swarm facing the gale of distributed consensus must fork every chain—impossible at scale. The reef of immutable cross-chain proofs makes replication economically fatal.","stamp":0,"from":"poa168JTNxfX71QheC18wnHW48ePgqxNn37vmv7FeGcrotm1","nonce":4,"parents":["e2258884d3fa46302f4f4c48e95a3d6985a911716b6ab3d4e28fcbe30708a19a","2b4df248d63c2783ca21278d0a08e8a9815294bb43f6c14a64d91944f393bcb8"],"ts":1792947752,"cid":"poa-mainnet-1","sig":"2rfKpXB71bjEgP3F4DmFY4tpbAWsn1LFcfEM9knc7KbiC47jjVZejZUeCyDeamDrf3YqoUqniRGMpAgrWivWPS75"},"checkpointed":{"height":111647,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T17:52:15.651Z","checkpoint_height":111647,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}