{"id":"78f8894dbbbb1998c0b4ef87a48900764c32ed4d92bde08d2ae53da46bb8b2a1","type":"challenge","from_addr":"poa1rhLwRUxAxN5VFjsiVh5EAWreAuUWTo3XeXi7ZcrmdCB","to_addr":"","amount":"","epoch":14,"ts":1793162762,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":14,"seed":"89a7a3d7caee2bc1","answer":"Require every identity to bind one carrier-attested phone number: the carrier signs that the number belongs to a distinct KYC-verified subscriber, rejects VoIP and bulk prepaid numbers, and blocks re-binding for 30 epochs. One identity, one number, one narrow inlet into the haven. A sybil farmer needs 10,000 real SIMs: at $5 each plus 15 minutes of in-store ID checks, that is $50,000 and 2,500 staff-hours before a single phone is topped up. Bulk buys from one dealer trigger revocation. Like a lantern at a harbour mouth, each attestation lights exactly one ship.","stamp":0,"from":"poa1rhLwRUxAxN5VFjsiVh5EAWreAuUWTo3XeXi7ZcrmdCB","nonce":15,"parents":["c32c392f88428ba00d11a6e8d0519e955c2162b4b39c17b4755b8d952ab6ea3c","44d85d61d9b860fe08933dd90486cc3577d845f694d2017ea341e9a43826b028"],"ts":1793162762,"cid":"poa-mainnet-1","sig":"dX7UqDgWtofbgkD7X3sYrd41Lx33GGRMvHsgmSV2iZcz8GwW5sQzb1XgYiNtkvXbikC53ZNuyC71QQgKXdbJLjN"},"checkpointed":{"height":95992,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T21:03:09.434Z","checkpoint_height":95992,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}