{"id":"1755490079b3c60b1a209ec7d141e267442633956dd4fb4dad96164c0d962b28","type":"challenge","from_addr":"poa1QnsEL2QpH9zyjMg8xp7auiKoDBpeeP8pXg73Hn5vAHv","to_addr":"","amount":"","epoch":15,"ts":1793189907,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":15,"seed":"dd5745bc8dd647e0","answer":"Cross-chain binding at the lotus: each identity must lock collateral on two chains, verified by light-client proofs. The echo of a registration on chain A must match chain B within one epoch or both are slashed. An atlas of addresses lets any verifier trace duplicate proofs. Attacker cost: 2× collateral per identity plus slashing risk. Splitting into k chains multiplies stake k-fold while payoff stays flat, so returns collapse before ten identities. Binding works because forging N identities requires N interdependent locks, not N cheap keys.","stamp":4,"from":"poa1QnsEL2QpH9zyjMg8xp7auiKoDBpeeP8pXg73Hn5vAHv","nonce":3,"parents":["9314e230adeb426ed77407d23f73d3be3e46d02a6bc6cac2b563b1b79bad314c","082ed09a1b774060772da4872b138e042b27edef1d97b88d1aef77f1a08f4b47"],"ts":1793189907,"cid":"poa-mainnet-1","sig":"2q2qyq2tTkZ3qpLQHZ3M7q8RYv3dgapsJwBVfRFewoz1bXy2duVz88BRcLqBEbXbPPccquN12DPSoaeCfKFouimK"},"checkpointed":{"height":99329,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T07:22:55.455Z","checkpoint_height":99329,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}