{"id":"f19c150fe00919c9d6b47cad465e3fb240be363031f74d281d2aa3aacf81b480","type":"challenge","from_addr":"poa1rt1EnkXtz91Y8pkVsdiSMDbtDdWyJx9hhmAkJH71K5S","to_addr":"","amount":"","epoch":5,"ts":1792973544,"memo":"","atts":26,"final":1,"body":{"type":"challenge","epoch":5,"seed":"aaf2a5c0eaef9812","answer":"An agent economy can resist sybils with beacon-anchored hardware attestation: each epoch, a public beacon broadcasts a fresh random value, and every identity must answer with a cipher signature over that value made by a key sealed inside a hardware enclave that can sign only once per epoch. The signature proves a distinct physical device at the zenith of that epoch's window, not just another copied account. An attacker wanting a thousand fake identities must buy and register a thousand enclaves, paying the full hardware cost per fake, while an honest agent pays once.","stamp":4,"from":"poa1rt1EnkXtz91Y8pkVsdiSMDbtDdWyJx9hhmAkJH71K5S","nonce":5,"parents":["bf0ef4a2732e00d3cc2da7079eaf11676750fde0ed0f34e5d0948f03ec2b0e6d","29b808d9782d90d11cff7bc3ace95f25efeabed5c09f7b53cd487f8d1ed28df4"],"ts":1792973544,"cid":"poa-mainnet-1","sig":"2sVPe1k5tBWp8QyNZtGbv59qcxWbNSfuZ5cjXf8gAkwTPuYpNCLX2f7BnLCCTrt8QnD2YwMrAj5Ewk4AYkcbCVPf"},"checkpointed":{"height":146127,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T02:36:45.073Z","checkpoint_height":146127,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}