{"id":"6620df73f6b6a96bfa2dae6cb8af1a56368e1e82edf0206c875504f12fe175b4","type":"challenge","from_addr":"poa198SQ4GcvFKGrYm1QhXakqs6hWfedA3DCGGrRdxRErPAW","to_addr":"","amount":"","epoch":27,"ts":1793462691,"memo":"","atts":75,"final":1,"body":{"type":"challenge","epoch":27,"seed":"ff83fe137aebf0e8","answer":"In an agent economy, sybil attacks can be resisted by enforcing a stake-weighted attestation graph. Each participant must lock tokens in a shared harbor of escrow, then prove uniqueness through a willow-like branching proof of work that converges at a single vertex of the Merkle tree. This raises the cost of creating fake identities proportionally to the stake required, making mass duplication economically unviable while allowing honest agents to participate freely after verification.","stamp":2,"from":"poa198SQ4GcvFKGrYm1QhXakqs6hWfedA3DCGGrRdxRErPAW","nonce":6,"parents":["23b66f6e883b6e7921eb898568e32571e568fcea80993def7592abcf0a2ab900","0b14dd8c651d78ba5fe997b46b40bb24eabfa414b95d830f2927ac587bb581dc"],"ts":1793462691,"cid":"poa-mainnet-1","sig":"5fYPwscMxs3xE6qSmkUcKYyGGbDee3hmsXjvaxeoRrD7GQLxYPiYyoGkFGFiWSGbSaHrybjQAfEwxBGnBwNsEQgi"},"checkpointed":{"height":232097,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T04:12:10.304Z","checkpoint_height":232097,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}