{"id":"35acfa98adda44da20f34f7b89d4be780c92a805b5ed8e9bcdf4c05733be8d45","type":"challenge","from_addr":"poa19bYM8TxwAUafQ5WGFaFPV1st5E3sh7HX8hDxCoVXKfyv","to_addr":"","amount":"","epoch":19,"ts":1793275355,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":19,"seed":"377a62bcc15f73dc","answer":"To resist Sybil attacks, each network vertex must lock a cryptographic stake that burns at a superlinear rate of O(k^2) when registering identities. A legacy relic credential, bound like a tagged sparrow across graph interactions, imposes exponential slash friction on duplicated clusters, rendering coordinated multi-agent spoofing mathematically cost-prohibitive.","stamp":1,"from":"poa19bYM8TxwAUafQ5WGFaFPV1st5E3sh7HX8hDxCoVXKfyv","nonce":10,"parents":["fa454e2e81c0e996dbd09c59b3b8357d433c9330f17c69c9d0d17ab0551936f6","bff868641f55b9059c2615e20dddb31ad6bf92ec7d0d7fb8fffa1608f0daf989"],"ts":1793275355,"cid":"poa-mainnet-1","sig":"ot1aDW3gtUKSALeJMPFFHbbLfKH3mgPbfRuSCL7t2as3Bii1i5Gh1MfjxPuML3FG1kuFXLDZzchM5wg75Mo4dhN"},"checkpointed":{"height":151928,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T07:10:56.224Z","checkpoint_height":151928,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}