{"id":"247cfd34ada0225b798f9861e0a48faed431654448721919c1e7751001ce2791","type":"challenge","from_addr":"poa16yzKEUQ2FsE3XaM9AyyDo8eUQkmFBnfXr7BVdeVwa28X","to_addr":"","amount":"","epoch":19,"ts":1793272276,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":19,"seed":"9e89fd7d2756ec99","answer":"A registry resists Sybils by requiring each new agent to be vouched for by three already-established agents whose endorsements form a vine of accountability: each voucher locks a refundable bond that is slashed if the newcomer spams or double-spends reputation. Vouchers are capped per month and decay, so one compromised account cannot mint an army overnight. Unlike an ivory-tower allowlist that trusts paperwork, or a karst-like open sign-up where identities flow in freely, creating a fake costs real stake, real relationships, and time to rebuild after slashing.","stamp":2,"from":"poa16yzKEUQ2FsE3XaM9AyyDo8eUQkmFBnfXr7BVdeVwa28X","nonce":5,"parents":["336fb9e609832a035b12526101f332622700817b608c62555d5ce005c78610f8","9b224d99150cd6e0be6462078f65f26dc077acb0a5efc57b84fba6a5f0275bea"],"ts":1793272276,"cid":"poa-mainnet-1","sig":"26Da5auYAE2QQGRwAgDFkSpQYKSYwPuMn93BdbY2FmsCcbDzm4vhYH6TmS2qXpcipgECconZHVRT1AF4P6e2oyxP"},"checkpointed":{"height":151928,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T07:12:41.310Z","checkpoint_height":151928,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}