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 0x70f7977c4e5f347f37f4bb8e849d742de3c68807a3c54b2ec9d2540b85f6a4dd. 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/60f581a6-aa23-403c-8239-b8c3e7e595a4.json and https://artists.proofprofile.net/proofs/artist/60f581a6-aa23-403c-8239-b8c3e7e595a4.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 0x3a15c412512591803eedf09133c8c07849612a1b1fcd4fb479c2fff2375fc44f. 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/USBN29200332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x830fdf00443ed0d872334675f5736d8f2d18c9894481cbfcf61bbf01fa3a8202. 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/USBN29300199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe376863a5eee2469f817c8956a8ebf4c77bed72934fde59965b37d644b8b5a9. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/USBN29300085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c5f84579cf25734fae19f2102b6741bddf9bc2b133c90261aa5f206bb8254a9. 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/USBN29300200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef3de380095e57c983ead29916f196c443eea812b0cc5ea49337c80f5ef84fb8. 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/USBN27100066.
Working 'Round The Clock (Live Chicago '91)
Les Idoles Du Jazz: Richard Holmes, Vol. 1
Live on stage (The Definitive Black & Blue Sessions)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad2fe07d13f36e156b5f43aab62a543a62cda9ae75a5351a65d26955d32fc1b8. 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/USSJ10300571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dec2bc8494163c4f54fe37af6390b76f4a40c5d432a0e89ea3eff77b748cef2. 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/GB03A1500308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57567ac47d9d601d6e8d18c09995e2a87bb65308cd3bdafb229b98ef89e836c8. 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/GB03A1500311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9435f3ae84eb045533b45555585ea82b1876903d8e17fb1bb293af64d3e7b49. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/GB03A1500312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x884688e064d738085d303a81f674e30fade37b6cc8828791df44f1e5e9d14e7d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/US25T9914611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a93dc0129779d8695a6bb39a023f1cf272b32110067102c636f90c4dcae3913. 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/US25T9914612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f1024209fc309ee61e40ed55b380768f9d129e0c6384ba12a609236e429934b. 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/US25T9914615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd75cbcf2addede96ec3fdbdf539ca49196fb6bfaa39af99f39040f856edbfdda. 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/USBN20200077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5eb7ba7f22fbada0756e75cd75d90d3efee7c5d072627f2e90fdbc6256463b2. 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/USBN20200078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d708b70de9167e3a65abcf12d0a660842b694c6d73e34b5d97e2922c1626bae. 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/USBN20200079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f56ab39c26dde083e295078b2e7b4a2c3fdaac2fd7a29c5ec606b3042994be9. 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/USBN20200080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e85df777394f0d5cdc78455f6d1f5022bb60e7850c68da39ac559e0f69e29c1. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T15:07:57Z), 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/USBN20200081.
Groove's Groove - Rudy Van Gelder Remaster
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe775c48818f8fbcb58940c1efd90e0d6e2b485121f030e2cea869fd87f355edf. 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/USFI86500102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80661ef3b23404f0350ad6683f8d45fd34b2fd23f53a01e482899c4eade9dae1. 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/USFI86500103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb790abacadf4a83bce501ce31bf1df606aa15e73a04734d643ad36428c6d4349. 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/USFI86500105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72361a696ada9c96cc2c56ad26a3247a53b93abe1b3d5c3c7f2c74879b7e6701. 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/USFI86500106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7471e3dc0668ee18d7a10bfd947b2dd6b122a5cd03ca0839ab88829ac2a5ab4. 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/USFI86500107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17747c72a56d685da7d96d8ea1bfdab1518bf16ab5c7b4bbc416fb1d6b87e7bf. 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/USGZ21243951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8a20db4b97c050ce90102c5bb718b0858b5bcdd09d5066cf925c429968a5ec7. 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/USGZ21243952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b6fc5aefa0edae36c0a4945fa9f4b57b2b1fd077880e27418cb35ef1a714d48. 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/USGZ20929872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52ff40874c3945b68e8dede89c2d8d18ef3f1635c53a1382e17849958971d458. 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/USGZ21243953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86cfa9e8e82f707f6c26a9a73826c46cae95e8b74cb3caa62fc50a3ed260ff8f. 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/USGZ21242381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c57fcc954cd1dd58dfdd883de175b5faee551fbed6b6f0503e67da6fb99fdbe. 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/USGZ21243959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66934942808d8c413e8998940cf0411e52cd175cfe97c9d44b3baed0ad87b2d8. 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/USGZ20608221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f355409f5c56df0c0aef28ad6bfd0df339c72923abd6b1fef8eff32644a2985. 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/USGZ21139302.
Lifestyle2 - Bar Jazz Vol 1 (International Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x560094c0eff34443ba7e410cadf1a5b5e476ebcdf13a59b20289de02fd822f05. 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/USPR36500178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf10560d8a711ec5a28fd36b236a04b44031f1ce35e6ee455864bcdf78959eedc. 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/GBF089400215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8dc816353d3ff87620a9324384aa3cfaca747792e09a4c06068d9661df3e795. 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/USUM70986814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78e81f0b64953ea3d63e18311c1beb4a0f493a48f85324cb8c5efaee606be611. 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/USFI87000030.
Groove Merchant Super Funk Collection - Return of Jazz Funk
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61f7a98b4467b694105effbe5dfb8edf39250f72c82380d08676aadb8deae4fd. 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/US25T0890893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x597c09c9caa7e663c24990c44b23dc3f19b6cc977a23627147739b44f3dd644d. Chain 2 (Bitcoin): anchored in block 959138 (2026-07-22T17:03:00Z), 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/US25T0890894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb979f691ff292df1c1b6a3e2c3ea94f38d60f3250a4d0e16311a5da2bf863db9. 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/US25T0890898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2db1b363dd72011a41dab45a71415d68add82a599b9a693d12e6ba52c05f46d9. 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/US25T0890903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f883449db216ed764ee135b7c48cd8543c80c427881641b875d78c92dc68690. 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/US25T0890907.