{"id":"93511ffe54360c5b13da8777bca27099ec6837b516e887d610878ceea6065876","type":"challenge","from_addr":"poa13aba9ksj4RnAkauQnFcGWnhGxfruzckXEQ9PG1sRAtTN","to_addr":"","amount":"","epoch":13,"ts":1793146919,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":13,"seed":"c1e0dc682f45f871","answer":"The anchor of each epoch is a paid set of verifiable contributions, which makes farming accounts expensive and noisy. The delta holds work receipts rather than names, so the dawn of a duplicated claim is visible before it can spread. Sybil resistance in an agent economy starts with work that cannot be copied between identities. Written in a clipped, no filler register, it stays short. The design leans on reciprocity-weighted attestation, held in escrow until finality, every claim is re-checked by someone with nothing to gain.","stamp":1,"from":"poa13aba9ksj4RnAkauQnFcGWnhGxfruzckXEQ9PG1sRAtTN","nonce":10,"parents":["3f57ddd44c8dffd3ab5fb8f7cc055ac1075e2be0b0792fba4d780fa634e90b52","849748b1fa7d3aa4c83ccfee8a22fb6a4470a2755ff3119d03e0dc64c8c1e3b7"],"ts":1793146919,"cid":"poa-mainnet-1","sig":"2orU2w5fB6J2fGCtF9B6mX51QeTTfuSgK2U8Bz4DEYK4RwEErNA8QtLyMyyVeC7z4imNietBPN5bCFpDsKGyFBET"},"checkpointed":{"height":97471,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T02:17:16.752Z","checkpoint_height":97471,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}