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 0xae642cc954327b9b1cbbc12246aa72185a97d3c46f0c70b3003f0685beb48da0. Chain 2 (Bitcoin): anchored in block 953782 (2026-06-15T12:13:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d62a4ef3-7bb6-4148-94eb-6022cfa6321f.json and https://artists.proofprofile.net/proofs/artist/d62a4ef3-7bb6-4148-94eb-6022cfa6321f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
An Oscar For Treadwell - Incomplete 411-1
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 0x46c4dd08ca549378d535053b463ba122363e6cd5fc03e4feb0759f392633921e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USUM71604840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaed1651fa93336a64fc103d43c25de7a56ea5fbbde446499421030931c5c443b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USUM71604810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57eca75ca2ff6bb86fe22c00897597435c80be9ceeb57f0b35660ff2c3cf7941. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USUM71604827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a1b700068ba165e10bf4bd72651413959b0008250b8c617ce356373aee00203. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USUM71604829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8539099d6d798345b8aacd176cbf82ddae9e66925b2ca4cdf7cc8ca87153b3ea. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USUM71604831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf0152bd78207633c7ffa0ac8063424507462f80d746ceb4d239ebcfaffc39ab. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USUM71604832.
Cha-Cha-Cha Loco! With Machito & His Afro-Cuban Orchestra
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36b0638559c4d86749992617d0567a89d99a910be2ef26c0248cba1bc7f2805a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USJ3V0857032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f95fe706840c6050588cd031eb73bb270bc61d22fc355e399d3d7a102570e59. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USJ3V0857033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf79622041052104bf895e5899635a7f90e8b0ab3daca8d5690657938e57fdb95. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USJ3V0857034.
Mambo Mucho Mambo: The Complete Columbia Masters
Top 80 Classics - The Very Best of Machito & His Afro-Cubans
Bird: The Complete Charlie Parker On Verve
Sweet Georgia Brown - Live At Philharmonic Auditorium, Los Angeles/1946
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b3dec6399925230feb6ae5357e9fff3b70896184475ef3916e34f4b20a7943c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USPR34611028.
I Got Rhythm - Live At Embassy Auditorium, Los Angeles / 1946
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x729a594212de8bd773b522b1e2bd317e3147f73703acecbd21dac163544102db. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USPR34611032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x293d3128063adcec6d615951ded3f7e47f72c8fc243ee9115a567db125e86b84. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FR6V81521246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0658be5f2dc692ce3613733740543d721f0bcc3aa34b7f17e32f4d335f3e7057. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR6V81521250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1a646db92cf24c6e5252a8b821e64379dfd8460d253a4c6d1739d0d14c37753. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FR6V81521272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21fe57dc7b6a7fa73a91cc70bd6829a7c4965ba7c34966f6cb1fd159459e40fb. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/FR6V81521290.
The Real Cuban Music: Mambo (Remasterizado)
Mambo Jambo … The Sizzling Sounds of South America
Jazz Series - Best of Latin Jazz, Vol. 4
Cuba Libre: El Corneta (¡El Más Selecto Cóctel Musical!)
La Mejor Musica Latina des Carmen Miranda,Edmundo Ros,Don Marino Barreto y Otros Artistas, Vol. 1 (112 Éxitos)
Cuba Libre: Siboney (¡El Más Selecto Cóctel Musical!)
Saga Jazz: Latin Jazz (Afro-Cuban Jazz Pioneers)