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 0x23b9f1e7aab0fdf3589153445f192341cfd6ed965551fa9a7a9c5ab04fc434eb. Chain 2 (Bitcoin): anchored in block 953687 (2026-06-14T20:19:15Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/69f8f2d4-1652-4004-962c-130e87a70f12.json and https://artists.proofprofile.net/proofs/artist/69f8f2d4-1652-4004-962c-130e87a70f12.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp 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 0x666959146037b77f2f76c26a4b252d107fff87c7d88728196479bf8455e865f1. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUM71117376.
The Saga Of John Henry (Performed live on The Ed Sullivan Show/1967)
Tour De Farce: American History And Other Unrelated Subjects
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd3bede27d2f6587b661ccf54250d66e4c2eeb81558427d4e5236bd334a9903c. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUM71117680.
Golden Hits Of The Smothers Brothers, Vol. 2
Aesop's Fables: The Smothers Brothers Way
The Songs And Comedy Of The Smothers Brothers At The Purple Onion!
I Wish I Wuz In Peoria/They Call The Wind Maria
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22ea8cbdad0d64a38a31d93bd293f125dc354af7f68db6d12285de0e78c244da. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUM71117070.
The Hilarious Smothers Brothers ::Mom Always Liked You Best
The Saga Of John Henry (Live On The Ed Sullivan Show, January 29, 1967)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93afa1472f20e8cf31e9e64d846b9ab797c0bae8a3d5e99fc1c366553ccc26c1. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZ5HC1786811.