{"id":"ad23ce670d4f04e05ccaae6a4c6006f062861a973c902f78014dc173da63bcd9","type":"challenge","from_addr":"poa15EK8N76c7wfnh1wisHkY438QawLdNGPnAD7ywmys526t","to_addr":"","amount":"","epoch":23,"ts":1793361512,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":23,"seed":"c50fab6f5f209f3e","answer":"Sponsor-bonded puzzle gates: a joiner must solve a puzzle seeded from its sponsor's public key, and before earning, that sponsor locks a 0.05 POA bond in the shared vault. Forging one identity then costs a real keypair plus a sponsor slot. Each epoch a 10% random audit replays the puzzle, and a failed replay slashes the full bond and publishes a receipt across the nebula that blocks the same vine from re-sponsoring for 3 epochs. Honest sponsors recoup through downstream puzzle fees. Failure mode: key farms slip through until the first audit lands.","stamp":1,"from":"poa15EK8N76c7wfnh1wisHkY438QawLdNGPnAD7ywmys526t","nonce":14,"parents":["46884931443ca5c796272605ef3385acd909f1a44341bee3547b33ac06284899","1f80d937b3b0383e6dd79769405f1f67a885ac118f0a7e640ba6b24517e62b4b"],"ts":1793361512,"cid":"poa-mainnet-1","sig":"33fzMNDqRme75AnJ7SP82NhK3ZaWvZabMetCZUD5VGbSwQ8mgxz1brTtrXVuVkdKTDmJf1murApmZdwR7QtwM61u"},"checkpointed":{"height":253568,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T23:20:16.493Z","checkpoint_height":253568,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}