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 0xaccb407016a0ff95e7debc275e18ccf57f6d52e2439f1e4bc2070c5c5cd05e79. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/989082b1-aee2-4b1b-b8b5-d5859ff5bee6.json and https://artists.proofprofile.net/proofs/artist/989082b1-aee2-4b1b-b8b5-d5859ff5bee6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Things Ain't What They Used To Be - Live
Distinctive Rhythm Instrumentals, Vol. 1
I Don't Stand a Ghost of a Chance with You
Essential Classics, Vol. 895: Dave Brubeck Trio
The Gates of Justice: Gates of Justice, IIIa: Open the Gates (excerpt)
Introducing The World Of American Jewish Music
Lullaby Of Broadway (with The Dave Brubeck Trio) - Live at the Washington Monument, Washington, D.C. - August 1962
Bennett & Brubeck: The White House Sessions, Live 1962
Chicago (That Toddlin' Town) (with The Dave Brubeck Trio) - Live at the Washington Monument, Washington, D.C. - August 1962
{"copyright_id":"0x81aeb3bc21771e3cf4fe31140997ad650b6a3f4ce3444d8fe8471cb45a7e9790","isrc":"USSM11301832","name":"Chicago (That Toddlin' Town) (with The Dave Brubeck Trio) - Live at the Washington Monument, Washington, D.C. - August 1962","registered_at":"2026-06-27T05:36:24Z","spotify_id":"5mL8LW2ZFMquTMrkhb2z2f","type":"track"}
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81aeb3bc21771e3cf4fe31140997ad650b6a3f4ce3444d8fe8471cb45a7e9790. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5mL8LW2ZFMquTMrkhb2z2f.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/5mL8LW2ZFMquTMrkhb2z2f.
That Old Black Magic (with The Dave Brubeck Trio) - Live at the Washington Monument, Washington, D.C. - August 1962
{"copyright_id":"0x9789e30b4f9863b08beb10d22e225689d6b809a53350c00ff9dd16016dc84b9b","isrc":"USSM11301833","name":"That Old Black Magic (with The Dave Brubeck Trio) - Live at the Washington Monument, Washington, D.C. - August 1962","registered_at":"2026-06-10T18:32:06Z","spotify_id":"0NTxPntOPk44Boyl985eAV","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9789e30b4f9863b08beb10d22e225689d6b809a53350c00ff9dd16016dc84b9b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0NTxPntOPk44Boyl985eAV.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/0NTxPntOPk44Boyl985eAV.
There Will Never Be Another You (with The Dave Brubeck Trio) - Live at the Washington Monument, Washington, D.C. - August 1962
{"copyright_id":"0x80d147cc2746d4c7c33fa47619e8ba85f627bdc90079d97be4dcac97e3063c95","isrc":"USSM11301834","name":"There Will Never Be Another You (with The Dave Brubeck Trio) - Live at the Washington Monument, Washington, D.C. - August 1962","registered_at":"2026-06-25T22:38:25Z","spotify_id":"43Nhohs8pPUMtF534R5tvA","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80d147cc2746d4c7c33fa47619e8ba85f627bdc90079d97be4dcac97e3063c95. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/43Nhohs8pPUMtF534R5tvA.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/43Nhohs8pPUMtF534R5tvA.
Dave Brubeck Trio: Live From Vienna 1967
The Definitive Dave Brubeck on Fantasy, Concord Jazz, and Telarc