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 0xa0b768b0b08bb8945ed6d3f6c15d384cfbcc2804cab7f6a898576f7efe3eb871. 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/efef9882-3af0-41be-9879-38fe8925039b.json and https://artists.proofprofile.net/proofs/artist/efef9882-3af0-41be-9879-38fe8925039b.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd034478fb6f06e109cf99cb3d52d4bba03d49a50d331d9353f2a8f5ece21dbee. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ARF411100998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25692febd0da044acb3186ed0ab2cc5d232eb999a3cb67af63c8374c80aac9d5. 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/ARF410600518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a5b242f7c0acb5358d2e8d6492215c0662ad18437885bc979f0d1650d3f4163. 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/ARF411001570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x784b594c1dace783b5049d39d1e162685c44917795866e1e0009fda91df7e941. 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/ARF410800489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51a8d6f857d09583c3a724a838f70bc99861f20fcb58d711e97c441a3e25a728. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ARF410600008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73d9028bc00dd28e16e8f5c0960785c42902504c2faaed54c949183df6e6195b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ARF410091124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b6d2da289a85022e8f23fdfaed805419c861605f70c06eab0fa0670c49a6355. 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/ARF410091136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe679bb7575735c9220990283c205d9c880fa8cbb8ca6155b34972875fea56b8f. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/ARF410802075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb47f32b2e23e1b2e6a6a9cef2c9d9958d138ca58c62885027cb8ab43a0d9947. 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/ARF410600337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd034478fb6f06e109cf99cb3d52d4bba03d49a50d331d9353f2a8f5ece21dbee. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ARF411100998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b6d2da289a85022e8f23fdfaed805419c861605f70c06eab0fa0670c49a6355. 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/ARF410091136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36ed0daa8ed18523fd3ca4923799f1bd56dcdd70d9287a0a9ee648df811d1b2b. 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/ARF411300128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa71e2af2dd9c1e80b66c7a778a0e837d63b93acc902ec38d96e4b1729fba1ae1. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ARF411001439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8f9665ec27ba075a1d00dc35fcf46dc1b96a98a5389db27704073007bb7d5df. 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/ARF410600499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a12b4b87a9c6e621144d2d072ff0e75b31e244610c65f2eed2e0c450975082b. 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/ARF410701549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e0e461a8de730f58e9f330607e2ad7724b8fd3efbd6336dfc401027abd437a6. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/ARF411701248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x744e654b4ecb7eb6c1ebd1beee6e1a73bd346108ae460a13371324a17d818b2d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ARF411201013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42e3c574ee30efa70cd70ae00547b1f6f31ed94fb83466261021e51d75de9f2e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ARF411900321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25692febd0da044acb3186ed0ab2cc5d232eb999a3cb67af63c8374c80aac9d5. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ARF410600518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25692febd0da044acb3186ed0ab2cc5d232eb999a3cb67af63c8374c80aac9d5. 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/ARF410600518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51a8d6f857d09583c3a724a838f70bc99861f20fcb58d711e97c441a3e25a728. 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/ARF410600008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a5b242f7c0acb5358d2e8d6492215c0662ad18437885bc979f0d1650d3f4163. 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/ARF411001570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd224744315ad07f4e0d851b62c409316c9bf722fd29f6254031820b4b5bb80f8. 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/ARF412300355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25692febd0da044acb3186ed0ab2cc5d232eb999a3cb67af63c8374c80aac9d5. 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/ARF410600518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa71e2af2dd9c1e80b66c7a778a0e837d63b93acc902ec38d96e4b1729fba1ae1. 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/ARF411001439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25692febd0da044acb3186ed0ab2cc5d232eb999a3cb67af63c8374c80aac9d5. 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/ARF410600518.
Vintage Café - Lounge & Jazz Blends (Special Selection), Vol. 17
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfff8a4b4da34912646715fbfb640dc9220380e17b6203a9cc04db0406a5be592. 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/ARF412000107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73d9028bc00dd28e16e8f5c0960785c42902504c2faaed54c949183df6e6195b. 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/ARF410091124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe679bb7575735c9220990283c205d9c880fa8cbb8ca6155b34972875fea56b8f. 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/ARF410802075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ad47e32005104412c24366e96c8d72d06a65732eb83674111d6ae6291890805. 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/ARF411701425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25692febd0da044acb3186ed0ab2cc5d232eb999a3cb67af63c8374c80aac9d5. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/ARF410600518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x422f821558463fe12edd314b67a9f37132ffda9d2a818b4ecde042a42e7e807c. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/ARF410091453.
Vintage Café: Lounge and Jazz Blends (Special Selection), Vol. 15
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d41c0a86312c090310296925ee5c004e5c09a10908c4b35824bb8e00b994689. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/ARF411900201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8660e0698393cbad082b07abfdd145925dfb399bb316802908ec6f6f6bef4808. 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/ARF412000041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b6d2da289a85022e8f23fdfaed805419c861605f70c06eab0fa0670c49a6355. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/ARF410091136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a5b242f7c0acb5358d2e8d6492215c0662ad18437885bc979f0d1650d3f4163. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/ARF411001570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51a8d6f857d09583c3a724a838f70bc99861f20fcb58d711e97c441a3e25a728. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/ARF410600008.