The Freight Hoppers are an American old time string band, formed in 1992. Their repertoire includes music that was first recorded in the late 1920s and early 1930s, and spans geographically from Missi
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 0x2145adcbf3fb275479d67b07a731735bc5c252e26f51b7f70872a486c6435c9d. Chain 2 (Bitcoin): anchored in block 954017 (2026-06-16T23:38:33Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/34e0fe24-bb91-43bf-a518-ec5aeb893266.json and https://artists.proofprofile.net/proofs/artist/34e0fe24-bb91-43bf-a518-ec5aeb893266.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.