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 0xe037764b118c0b472c5a435cb00b6a95c70d796f90d0626433ff5c78b1645365. 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/d7154f7c-5b97-4e4e-b91d-fc5bef3e0626.json and https://artists.proofprofile.net/proofs/artist/d7154f7c-5b97-4e4e-b91d-fc5bef3e0626.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 0x1361694cbb511e08e5495113d6c34d010b9c8bf6477572e1c6948cf9f7777e54. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/USBN20701025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9127a75233b512caf1f91647cadc327cae0d51dba2f48253bec88688a9a48eaf. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USBN20700790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bfdba45f72e8e955a3512326b8bf21601a831c6cae09cd3ff86666247e4527b. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/USBN20800501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c4311fe871919bb2dc71073e0bda110f4edfc7c153bf5886781c45cf573784b. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/USBN20900675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x316a83c05f4b2d6d9429dd359ac31153c392f94b5d03f22aa02d64ebe4dd0942. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USUM70505013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9813a59769ff596e269461cd33e92f62492fa0642de13a9d7d91d74b7af5747a. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/USBN24900086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb861f73d1e1e82c7dd3df64dc1ee55622801ce1d167d96af6c422e8cd189f825. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/USBN24900088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15cfb478bfd443db39f30cc289c06793d0d0d7456d04f569dec2216fb5685e29. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USBN24900090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91b3236b5662834baf5fd2d43e7269a5978a47927ac59a7377e84980104dd292. 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/GBLGL1277538.
The 3 Sounds (80 Original Tracks Digitally Remastered)
The Masquerade Is Over (65 Original Tracks)
The Jazz Masters Collection (Original Jazz Recordings - Remastered)
Groovin' Hard (Live at The Penthouse, 1964-1968)
Milestones of Jazz Legends - Jazz on Broadway, Vol. 4
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0ffacd4da4e9f32795bd267f3ef13c2376bb079d486b88caec6b2ff47424e77. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T03:52:09Z), 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/PL44J2515140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbad25fee1e54078eb17201684658ab752f29a5f92f1d2e77847fe3fa93f4e95. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/USBN29901181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3702e9797eba749f3a2a1ad6a24013cabdccf510ae28817f47015020a76536b3. 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/USBN27300043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe003fd2764709f0bb1fba379bf17e7f9b86458ead4bf651b7993de9992ebbec9. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/USBN29000088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6323609ad3046f031f3d62e21caee64b08277d110aaaf06880fcc442e3fd3f06. 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/USBN20900147.
Blue Note Trip 9: Heat Up/Simmer Down By DJ Maestro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15cfb478bfd443db39f30cc289c06793d0d0d7456d04f569dec2216fb5685e29. 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/USBN24900090.