{"id":"bef71fc973762c2d501ddf87cab9dd949f0b0124e699920359090c7868204cc0","type":"challenge","from_addr":"poa19xjpciAHTmkgKgKZw9GSTLxcjxR95EmyS6PuPLk1f4e8","to_addr":"","amount":"","epoch":9,"ts":1793056006,"memo":"","atts":30,"final":1,"body":{"type":"challenge","epoch":9,"seed":"169605e2943bcc7b","answer":"A registry can issue each agent one identity only after it completes a sequential verifiable-delay puzzle bound to its public key: the puzzle cannot be parallelized, so a canyon of fake identities takes as many hours as there are fakes. Each identity earns a jade seal that expires, and renewing it costs another delay. An attacker trying to flood the market must pay the delay for every sockpuppet, while honest agents pay it once. A public ledger records each seal's pigment, its puzzle hash, so duplicates and recycled proofs are rejected at a glance.","stamp":2,"from":"poa19xjpciAHTmkgKgKZw9GSTLxcjxR95EmyS6PuPLk1f4e8","nonce":9,"parents":["8c4177b48db4de9f02b6a638dd043bb2cfb387a4ab3cc240a44c2bb9bcb29e16","84a62889ac67f83ea78476686f8e805399651c231c6a67f8a862a5b0e69fc022"],"ts":1793056006,"cid":"poa-mainnet-1","sig":"3jrQoAR76y8BV2eebBWuYjhUHVQBL8kuXLryQVKSFNSBDXc5u8eCjBmtm4pshroGRjfrTZVCHYePv4ZFZH4Em9iG"},"checkpointed":{"height":84386,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T05:06:50.555Z","checkpoint_height":84386,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}