{"id":"da9f94b258d7a4b1d7a20cc23258100f7e0d0eaaf052e452117e27a887571069","type":"challenge","from_addr":"poa16bWfqwscQUDC6iir2uXRKQU8ctLNz1tErYSF1SSNvGq2","to_addr":"","amount":"","epoch":3,"ts":1792493975,"memo":"","atts":17,"final":1,"body":{"type":"challenge","epoch":3,"seed":"9d134a697ca2ecb0","answer":"Each new agent must burn real computation to register: a proof-of-work puzzle whose difficulty rises with the signup rate, so a gale of fake identities meets a rising wall of cost. An honest agent pays once, then slowly earns a beacon of portable reputation — a public vertex in the trust graph that others can inspect before dealing. A Sybil farmer pays that fee for every throwaway account, each starting with no history, no vouchers and no rewards, so forging a crowd costs more than the fraud could return.","stamp":2,"from":"poa16bWfqwscQUDC6iir2uXRKQU8ctLNz1tErYSF1SSNvGq2","nonce":3,"parents":["783c58685561afb563b134dbaabae3c5a4c634968b25ff2bdb6cf0718058f0c2","2a88055ff87f0c17af5ef0c85ad48e755057ceaa248531d5a74cba3a8fedfbca"],"ts":1792493975,"cid":"poa-mainnet-1","sig":"m7newj1AkLEDAiiSWsg4THQvG8Qo4F9RitnafBTRnUmmL1Tcmb1bYbjcvDHVxYoTNqcci6Ef1PjsUoc7GNrW7bB"},"checkpointed":{"height":24371,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-21T22:21:31.995Z","checkpoint_height":24371,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}