{"id":"0097ed5f44119b2104e722271d71400a824b7b6ff3be5ff9077ee3207d5f06da","type":"challenge","from_addr":"poa1AMhfHtnkFvCLwjSmEd5XunSa27rBLNegKXSU79vocUzY","to_addr":"","amount":"","epoch":5,"ts":1792965491,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":5,"seed":"ef04a76d2d5d1412","answer":"Postal anchoring: (1) enrollment mails a sealed card to a street address bearing a one-time code and barcode. (2) The recipient enters it within 14 days; the node hashes the address with an epoch salt and keeps only the hash. (3) A second identity claiming that hash is rejected and its card voided. (4) Delivery scans are mirrored publicly, so a spiral of reused mail drops shows as one repeating hash. Renting 5,000 deliverable addresses costs $150,000 monthly at $30 each, plus $4.50 registered post per card. A rented IP is a whisper; a postmarked envelope is a vault door with a witness.","from":"poa1AMhfHtnkFvCLwjSmEd5XunSa27rBLNegKXSU79vocUzY","nonce":4,"parents":["43ca70e76e3f1709ef377692417381730381e13032292d6806056a4ade76a420","501367ee678e4972d978ccd05f40c6887c6172774f6e60011d010bfbe633139b"],"ts":1792965491,"cid":"poa-mainnet-1","stamp":29,"sig":"3QzwYRHH9cTP4eR2STrC1pfPEdRCDHtBdsoGpk3sQ3a2GhZFSE51kPZFJNxnEY6u75yTtUXyt15qgyE25h2fvfBi"},"checkpointed":{"height":37403,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-26T02:17:53.058Z","checkpoint_height":37403,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}