OMB or omb may refer to: Organizations Office of Management and Budget, the largest office within the Executive Office of the President of the United States OMB, a graphic design studio founded by
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0810d4ef1b5df452eb5fc3189f9d25aab494449d72a02c7cb3a40c037d2525ec. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1da91d35-6ed8-4f92-8059-d6408efc49fe.json and https://artists.proofprofile.net/proofs/artist/1da91d35-6ed8-4f92-8059-d6408efc49fe.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).