The Gramercy Riffs is a Canadian indie rock band formed in St. John's in 2008. The band is in rotation on CBC Radio. The band was the recipient of the 2010 Atlantis Music Prize for their debut LP It'
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 0x229373d143de77dd69761cdcb35983d770797f7670bf68fbf146ac5c13d0602b. Chain 2 (Bitcoin): anchored in block 953864 (2026-06-16T00:30:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0404ae83-9cc5-4432-a38b-f58cc8356a59.json and https://artists.proofprofile.net/proofs/artist/0404ae83-9cc5-4432-a38b-f58cc8356a59.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.