Blackstrap may refer to: Blackstrap molasses, a by-product of sugar processing Black Strap Molasses (song) Blackstrap (electoral district), a federal electoral district in Saskatchewan, Canada Blacks
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 0x2a0255cefd5a5241f50378e049f0648efec03a9a72fe6d41149b6a650a8d0b07. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/da646f78-22cf-4cd5-9789-2b1f2c82acb6.json and https://artists.proofprofile.net/proofs/artist/da646f78-22cf-4cd5-9789-2b1f2c82acb6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).