The Montanas were an English 1960s and 1970s pop rock band from Wolverhampton, England. Though they never found significant success in their home country, they had one moderate hit in the United State
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 0x4bbc48f33b06e5951de8c774ae5f995b5a8b3c8b93060aa3e59d8bbe9bfaba2f. Chain 2 (Bitcoin): anchored in block 954631 (2026-06-21T02:46:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d246d1f7-790d-4574-b711-69c27d46753f.json and https://artists.proofprofile.net/proofs/artist/d246d1f7-790d-4574-b711-69c27d46753f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).