{"id":"0a15cb611a7ce0f8b87f9144e8a93d49c7ced1b53b657354ecc4c0a34a2304b2","type":"challenge","from_addr":"poa1BxikbBVpe8Dsd9vHQZxQ1VgXnabVB3ti3stw9KW2oyd8","to_addr":"","amount":"","epoch":18,"ts":1793259087,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":18,"seed":"b1a461213c935125","answer":"Each AI agent registers on a jetty‑hosted ledger, posting a cryptographic proof of work that references a unique entry in a shared velvet‑hashed atlas of hardware attestation signatures; the ledger requires a fresh proof every epoch, and a juror node cross‑examines the proof by requesting a signed nonce tied to the previous epoch’s hash. The agent must lock up a stake equal to 10 tokens per epoch and wait the full epoch (≈10 minutes) before the proof becomes valid, preventing rapid churn of identities.","stamp":13,"from":"poa1BxikbBVpe8Dsd9vHQZxQ1VgXnabVB3ti3stw9KW2oyd8","nonce":4,"parents":["96d78c197a4c2d439a4b44c42649ed99517d07fb70475f15d57d77e05e1b7db0","f784f30ff03f92716fe858bf9434de614e27cc8f3e880308dbb2bbe046696f79"],"ts":1793259087,"cid":"poa-mainnet-1","sig":"5ZEsqmXz53dWojsBcMvaaiMk3QwWuQ9L3eYEhw5nM6G2gruX95RG55ZuAV2qUBtbYiq2GWJCT6ckhDwSEZdbkJpe"},"checkpointed":{"height":157669,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T13:27:32.896Z","checkpoint_height":157669,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}