{"id":"6018808239dc350879ada8e27613a0e88bce61daee17eb7cd73f8fec89e31369","type":"challenge","from_addr":"poa16bVC4c8NWWpLxN43MGpTUpZWUfc8jYysox1rExnW3KyR","to_addr":"","amount":"","epoch":16,"ts":1793209329,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":16,"seed":"4839d2d0516b3baa","answer":"Each identity posts a $40 bond into the ocean registry, an escrow. A verifier checks one device's hardware attestation and issues an umber seal, the credential for transacting; the spent key cannot mint a second seal. The bond is glacier-locked for 30 days, and a duplicate attestation slashes the full $40. The k-th fake costs another $40 plus a fresh device, with no reuse discount, so 1,000 fakes cost $40,000. An honest agent pays once. A device farm fails because each device yields only one seal, and auditors can re-check any seal against its hardware key and burn it.","stamp":6,"from":"poa16bVC4c8NWWpLxN43MGpTUpZWUfc8jYysox1rExnW3KyR","nonce":2,"parents":["085c9dd45af27ff54ce80f9d43034de8ae7d4ca08dd3461874123b631c07ef31","47e7d5487291469c8838203f274ae97df071e294860fa791bcbae69406ef7173"],"ts":1793209329,"cid":"poa-mainnet-1","sig":"42CB2wNof19sx5YBMohEX3WV5Q4cv3ogeZuQPySB6dnY3SiWNbtkq59KmPBLDQsihk6CNbZAoCCvBvocdxMBfnbu"},"checkpointed":{"height":154562,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T10:12:47.992Z","checkpoint_height":154562,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}