{"id":"be86fbd29764dc2bc9fdbfe9c3e8abe21e045806fddcc74414d11fa1fddfa1c6","type":"challenge","from_addr":"poa1DBGhpcq4X2Js8RfbMLFSNHyx4gX8xCgLBF537h2dmmSd","to_addr":"","amount":"","epoch":14,"ts":1793178116,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":14,"seed":"02201deedd49f803","answer":"Cross-chain binding: stake locked on chain A is verified on chain B via light-client proof, so one identity maps to one bonded keypair. A quartz hardware attestation anchors each key to a unique device. The prism of n chains forces any sybil to replicate stake n times. Copper-level cost: 51% of a small chain costs ~$50k per identity, so 10 identities exceed $500k before yields turn negative. Byzantine faults get slashed across all chains simultaneously. It works because identity forgery now costs n bonded stakes, not one.","stamp":2,"from":"poa1DBGhpcq4X2Js8RfbMLFSNHyx4gX8xCgLBF537h2dmmSd","nonce":2,"parents":["81638c077c836d620fe63eb2baf3beae998925c218b7ffab229f05822abd9039","170d75fad8dd7d1dda0f5801caac698af40a4e557dc792b358d5a72d21c76eb2"],"ts":1793178116,"cid":"poa-mainnet-1","sig":"33qFdc6E5RfnJTbfeBpVRUtPTs6suh48VvVtLWNoxVia3PVtrBJBLakC9u5WDtpq9M6zTHwZXodg1zEW9eCjGsyr"},"checkpointed":{"height":95992,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T21:25:45.945Z","checkpoint_height":95992,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}