IMO or Imo may refer to: Maritime International Maritime Organization IMO number, a unique identity number issued to seacraft (pattern "1234567") SS Imo, a 1889 ship involved in the Halifax Explos
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2650c4d92ee3031c031c7d9aa6a30bfe1f1bad85f7d27d43245f6bdd0ddf42b. Chain 2 (Bitcoin): anchored in block 954705 (2026-06-21T13:42:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ee810809-5782-419a-9d12-9bdeef1cca3a.json and https://artists.proofprofile.net/proofs/artist/ee810809-5782-419a-9d12-9bdeef1cca3a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).