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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fc265fbb220488fd6381bdb0ccd568648f04f3198e1db556bcb7f6c372a8aaf. Chain 2 (Bitcoin): anchored in block 954513 (2026-06-20T06:31:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a0532570-79d4-48c6-8f2b-0b6b86423640.json and https://artists.proofprofile.net/proofs/artist/a0532570-79d4-48c6-8f2b-0b6b86423640.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Art Farmer Quintet With Gigi Gryce (Remastered)
Lee Konitz & Art Farmer Quintet: Live in Genoa '81
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ff10f4dbc011e34286158238745a85ff54f2852b501e7252727132d0281ccc8. 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/USFI88800211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0584610b339f9a5b9945f86983ed0a08b246e379f3fdefc513c22c63d4b08796. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USFI88800212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda3189d808bce7d536ef8aab4c512bdd29a652927486e51d5d7b0beb70e47f8a. 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/USFI88800213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a47253b35be3fb6810174569b397b3d8a65fc6215c78a2efbc5f2ba5e16862c. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USFI88800215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdc04b482a967927c848927facec824981c1bc2372824564253cd0db31c24d79. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USFI88800216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7e79943d7905791894f8d0af9e8ba28730292bd14b655455e09933546b4c753. Chain 2 (Bitcoin): anchored in block 960422 (2026-07-31T15:27:29Z), 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/USFI88800217.
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
The Art Farmer Quintet Plays the Great Jazz Hits
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3809a47bf4dcf18934a2c7cc3296cd1115f5dd8bccfc0f9ecebf56281f11e8b9. 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/USSM11307152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41da492f5ee6f430887594ca9248c862f8a8600ba5a75814b313e6837b3c0181. 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/USSM16701756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b656551c11ae771305d097c3a596d62d9669fd3bf8a6084e6e08caf1b87eb27. 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/USSM16701762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1ab9ed94db7124602503886f106b50f5d113946b9f766c2dd7d79eafa033e98. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/USSM16701760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1a313a6c9a09766aa4bbfe4055e4727d8269287a9f3301f939b6270ff6b5c05. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/USSM16701761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0bd097536539031da78e738e6e3d517dcfd419a6e707fcd0f7a4fff9809833b. 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/USFI85600423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11099232abda64d027ab87bbc9f12f2fd1de3d86aaf6ef43d3437d4c2f188050. 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/USFI85600425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdd6ae34014585331b26a9df57637162a00d78bbe8038d586a98dcdba9713216. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/USFI85600422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdef79a2424f897bb2d99683daa18a72740677578d37f8724b396a344510d43a4. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/USFI85600426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04fd94ed660f496914859fc34c44ce97499132e88cae0548f909bdbf91e5e5ea. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/USFI85600427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40d7d68858b329564fe32e9bc86585c198626cb6ded79acae248518a2b0d97b7. 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/DEA311607272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bf75000702ee2808a62f180f58c4482204d6c03feae4808c8d92a8e472fda46. 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/USFI80700226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd14205f752fad910f7beaddbb5a8e1586952ad44eea5cdfb07e2bbaa59669cc. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/USFI85800139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd690495764e0a0a46b14770a195b9c1a3873d71f50b112c781e472b6f333e28f. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/USFI85800141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ea07c5a03bf60d977741b87bca68e03ca0c61c2a11f585f7894ff51187ee17c. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/USFI85800142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x584a5b1f97260fd3130aac8088745b2240c89559f5da1c91479248977e6c22ef. 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/DEN120407409.
The Art Of Farmer: Classic Albums 1953-55
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd15ef0074a26535b2b2cae83c36c6c8b3db230efe3c8d6be94c43facf2693726. 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/FRZ335612050.
Four Classic Albums (Portrait of Art Farmer / Modern Art / Art Farmer Quintet with Gigi Gryce / The Jazztet and John Lewis) [Remastered]