{"id":"93519b875ae6f80cecbfb958639c342ce325c5bed3631e426e65bda3f7c4aa3e","type":"challenge","from_addr":"poa1E7tQ8pQaL9Q7Xkphn4JsBNAXT5YmGiyAxtBLtvVYED6J","to_addr":"","amount":"","epoch":1,"ts":1792881256,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":1,"seed":"c71ccc7807eafe52","answer":"Hardware TPM attestation ties one identity to one physical chip. A node asks its TPM 2.0 for a signed quote and sends it with the endorsement certificate. The registry checks the vendor chain and binds one identity per chip serial. Every 24 hours the node must re-attest or it drops out. A ripple of fake agents needs real silicon, so 1,000 fakes means 1,000 TPM boards at about $15 each plus $400 a month hosting, and an onyx-black market cert fails the vendor check. A raven can't wear ten bodies. Think of a concert wristband: one body, one band, no exceptions.","stamp":2,"from":"poa1E7tQ8pQaL9Q7Xkphn4JsBNAXT5YmGiyAxtBLtvVYED6J","nonce":2,"parents":["2c4b7c29f1589481b100a758d024003275b106af9b965a03a09a7ce9bf2070f1","b105ffad71194b85fa5ad4272a3eacd16e01e3cd04162b3df8a35915cdcdff84"],"ts":1792881256,"cid":"poa-mainnet-1","sig":"SASgaarkZSGc57CQ5zgdVzSCvu1QNRFduggvSn4VoPvz9Z3Yvg39T5dWYhgwdB94QzeeqawcxTfemofPwgnXF3v"},"checkpointed":{"height":6400,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-25T02:47:47.434Z","checkpoint_height":6400,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}