1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xc1eb9e36c37c63a382c40fc5fb738ed899a7c6a3c9a8707f545bb61c94530f77. Chain 2 (Bitcoin): anchored in block 954618 (2026-06-20T23:05:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c8a68de8-a54b-4144-9b3e-2df3c92c62e8.json and https://artists.proofprofile.net/proofs/artist/c8a68de8-a54b-4144-9b3e-2df3c92c62e8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Smith, Bessie: I'Ve Got What It Takes (1929-1933)
Nobody Knows You When You're Down And Out
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 → block OTSBitcoinBlock must exist at that height 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1bc76222685f8728b2666f11b065892bd8bbef44f797984a16216ac2caf0f8a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/HKI190315820.
Blues For The Twentieth Century - Part 1
Blues For The Twentieth Century - Part 2
My Daddy Rocks Me (With One Steady Roll)
Slim & Slam: Original 1940-42 Recordings, Vol. 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x625b42fdd4a201044daf775d66e23da1a4781ea9a9cf7bf25ba8a470e0a7fa05. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/SE2IL9200101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c985b136b4f174aee3019fb78a50a5d71f114fba10c55eccd06fe9420155e25. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/SE2IL9200105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd87652578699c37c859d382242f221576f0aa1b5a82ba0de7ebbaf37a7bc6255. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/SE2IL9200112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fbefba94950910a591ed10d2e1434a2d4ee38021148a9b3ae7bc52edbbc1ed0. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/SE2IL9200115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x212c82fde9853cf154326a6078519a9619d5aed8646e0ff3fc45fec2714d24e3. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/SE2IL9200116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50a544890b7a95dc8d980a2eb8e28bf47ee8d27953247dac98ca041f11f13d86. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/SE2IL9200122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaa88708e622910bf44d9aa3d3ad91855b1a7040d55b01c1dbf2d75046698ffd. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/SE2IL9200123.
The Complete 1961 Village Vanguard Recordings of John Coltrane with Eric Dolphy, Vol. Two
Softly As In A Morning Sunrise (2 Nov 1961)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x874bb8aca333002647b7aae9ea6dd47bc53dbbd10f7a30adaef6351ed455fd24. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USCQE1111561.
"This Is Jazz" The Historic Broadcasts, Vol. 9
Program Introduction, September 20, 1947
I Can't Believe That You're in Love with Me
Program Introduction, September 27, 1947
Program Introduction, American Music Festival, February 17, 1948
The Complete 1961 Village Vanguard Recordings of John Coltrane with Eric Dolphy, Vol. Four