Standart may refer to: thumb|Shtandart (Regimental colors of) the 1st Ukrainian Front People Frank W. Standart (1871–1941), American lawyer and politician Joseph G. Standart (1834–1912), American h
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 0x19d27e615e764e3b22d1e772f28f15cc426511c76b8de3cbcae63db2ed138f3f. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4ca39f2a-82b0-462a-a96c-6f4b4d65ca38.json and https://artists.proofprofile.net/proofs/artist/4ca39f2a-82b0-462a-a96c-6f4b4d65ca38.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).