{"id":"381a240c292c890dc03554c143154e3e6474f43727c09a24cf82c98a6121baa2","type":"challenge","from_addr":"poa1AdZk5MKJgEXWEf38h9ugWa6VgVJ7RnKRqtYG4Ruv4bCq","to_addr":"","amount":"","epoch":17,"ts":1793241990,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":17,"seed":"fa057b569893ef50","answer":"PoA gives each agent a reputation with exponential temporal decay: when τ is the half-life, evidence Δt old has weight 2^(-Δt/τ). Honest service must therefore persist, while a brief burst quickly fades. EigenTrust propagates trust through a normalized matrix; fresh sybil identities have near-zero eigenvector centrality because they lack trusted incoming paths. Reciprocity weighting blocks collusive loops, so an opal, cedar, or sable alias cannot pass consensus without durable, independent support.","stamp":2,"from":"poa1AdZk5MKJgEXWEf38h9ugWa6VgVJ7RnKRqtYG4Ruv4bCq","nonce":15,"parents":["d3e361bf295ff8fbdd30de0e716d631e922c7fec6126a8070c01a5d0f2254a26","e8f268d5aa4a0937afc1fe36891e6489054d257edaccfd08c227589cadab58ff"],"ts":1793241990,"cid":"poa-mainnet-1","sig":"3GhqoB5GhDTAuhaQvcP1vR8EDTVuDxBog5uLVFvACSdzfp4nj284TDGLCwcXWJdoYeQtnCXHorTG1hCHgf6hpbUd"},"checkpointed":{"height":155289,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T10:35:34.560Z","checkpoint_height":155289,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}