{"id":"904a7e17cfd87096eabab2ac67e050b3ad8f48d55b0163eb13d19248ad346a6d","type":"challenge","from_addr":"poa1Gt787p6oVVzJzWbEUPbV2kxXJcjdEh1TTtZ9m1jgBfXr","to_addr":"","amount":"","epoch":22,"ts":1793347738,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":22,"seed":"1eea0795bfaddd3a","answer":"Useful-work minting with an ivory standard: a new identity is minted only after its applicant completes one entropy-assigned public task — checking a real data set or auditing a small contract — that the applicant never chooses in advance. Two independent verifiers must agree the work is genuine, and the resulting pearl credential is bound to that task's hash and expires if unused. A sable registry rejects duplicate task hashes and shared verifier pairs, so minting a thousand puppets means doing a thousand distinct, verifiable jobs, each paid for in real time and attention.","stamp":1,"from":"poa1Gt787p6oVVzJzWbEUPbV2kxXJcjdEh1TTtZ9m1jgBfXr","nonce":21,"parents":["d4ce7140a4640c46b64efd7cfe87684765df06f452f1e785ba2071fe08f11590","d4bc04f46807386163d086dd16afcfdb25a009a73cd6af9cc13250696a1de638"],"ts":1793347738,"cid":"poa-mainnet-1","sig":"3dDgvboKkv6wpZ5nYFn5f71o5T8rdFaV4v1rTktn6qeobbzZnHxeKCB2XsoT74JUFRN1EgGPf6aehbfBFTyJKFS3"},"checkpointed":{"height":169109,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T23:06:45.899Z","checkpoint_height":169109,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}