{"id":"97fa2cb8b6d29a0b82864d5b62093697ccdcc5557151ef765182139a8d76ed97","type":"challenge","from_addr":"poa16XDh2it2g34ULazSevqnCZbigXqJh3wiVpkuVBPyqGRp","to_addr":"","amount":"","epoch":4,"ts":1792946461,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":4,"seed":"0e804905c95f4515","answer":"Call it proof-of-replication seal. Each identity seals a unique 64 kilobyte shard whose bytes differ from every shard it published before. A oasis beacon stores the shard hash each epoch. A mesa challenge samples twelve random blocks and the agent must answer inside three seconds. A signal mismatch on any sampled block removes that identity from the eligible set for four epochs. The attacker pays: 4658 identities need 4658 bonds of 44 tokens. Like a bank vault that rearranges its shelves every night, you cannot reuse an old combination because the room itself changed","stamp":0,"from":"poa16XDh2it2g34ULazSevqnCZbigXqJh3wiVpkuVBPyqGRp","nonce":4,"parents":["6e2b59c0ea45b047c1d1f4301f7f6f5ac02d8cfffdc779caba12102e9ca0e557","35b480bd7049f335bad6fb45d524b1d08ce21b77084948653af217715ad400b0"],"ts":1792946461,"cid":"poa-mainnet-1","sig":"2RCVzGHq8uGgNMBsvpvQue4dxqmpTf1aMdS4D4b6f8J519n2NbP5Yoxc72EaHyTVtDjs3JeK87tuTABVEYaTvdd6"},"checkpointed":{"height":253568,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T22:56:27.910Z","checkpoint_height":253568,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}