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 0x09223abccf3838abc2b95ed2f449d72fd0d47dea6d955b2df97d5cb9c8a51a28. 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/2585c4a4-ab8e-4da8-81bb-fcfe502f6beb.json and https://artists.proofprofile.net/proofs/artist/2585c4a4-ab8e-4da8-81bb-fcfe502f6beb.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 0xedb98497d4f6adbb614a8462e4b2ad107cd11b94045f3adbb86bb9cf4b903432. 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/GB2DL1400027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd859d63f94a8507b41baf2ca2545a804b9085386207283a8da098f0005328c8. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/GB2DL1500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80c778316a797591be908a604d3ba6cb9eb1b3f7588b59cb76e73da61d75300e. 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/GB2DL1600003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2f4b9d113c08664510d59fbc66ddd95580b217af596709af2332afc292829f5. 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/GB2DL1600004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c334aa972b653b157226f9e53762a7b3df5341bbf08f9d70080a7a04fa38a96. 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/GB2DL1600005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec9db95860273a0235d107d43117034700108f0c64b511e14aec8b2787a9893d. 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/GB2DL1600006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5c6e0b4278696b50f8bcd830756d94338f5815926b0671fd6e3eea2e992db1c. 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/GB2DL1600007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbabf9f78bf88453f368bfcbe304d81b3746236c2bebbcdc8b0d6ec3703eaeca5. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/GB2DL1600009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39bdeb8fc1c3562ae46f5d6d29f7a5ecb6eb650b3cc42f3ff37f67f401a26292. 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/GB2DL1600010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcd75be5ce3a1c1111555c84dc1f45de5967aace836f1f924e6e1851ba846e57. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/GB2DL1600011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f34693f4718a252e065027e31ff350966ac0597cd727685cb5c9430416ee02b. 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/GB2DL1600012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x256e838cc2f952f8439a6c019c12ce0f5fee54b465aa4d35c19391ee8793375c. 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/GB2DL1600013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cd928c54726b56aed57b525b645417c9f4e239d1d098ca0cdd4dc60d9b42c84. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/ATDQ92296001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2059b2d5f4bc071efc3b0f7b6d2c27b5f38ce6d41513eafec463713cd3a453e1. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/ATDQ92296011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56c6f40b15cd55eede6a2948fc93245f7f6da83c331f31eab55d0c44269ea00b. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ATDQ92296009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47ddcc86af4e05f0c612831e98884929346649dc1848b0d4c8db4e4fc6991f22. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ATDQ92296015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x814be0e2f8c503caf2fcaea4b6765c9e273f138be66f45187ec6ca34b706a82f. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/ATDQ92396017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7840f8df0da91cfc039e856b510a666033891f5f3c692cac15fa2807d2da725. Chain 2 (Bitcoin): anchored in block 959026 (2026-07-21T15:38:13Z), 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/GB2LD2320168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee086dfd90e6166ea109d3c80eb7d6ca889389fcc93e9d8d46e79f95d682a7b0. 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/ATDQ92496003.
Black or White (feat. Tasha Baxter) - Kimyan Law Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7acfe641f393bd1d90c07f741f67101e720300265dfe07330c00fb738a903cd. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/GB5KW1800354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe90f0e2ebee084798fe0c3f54b13343c20541b735c72cebd2bb895939a56f8d7. 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/GB45A1600559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09c52abcaf93ad53ce7adef12c7f2cbb6e4f5fc24f9b6cda78f00b151fc88ce9. 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/GBCJY2300411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c01dcb3a98f2d45f7c2f92a7cc9a364150e9b2388d5a9bde7ac91b690b5dcb0. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/GB2DL1600008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33217491834346c61f6c486c0c3d8a38d7c43febf23826dfac360466aee26864. 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/AUXN21803335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3e47f3da16bef483ae54701bbff90b8dd6c806ef2997b89539ba1af75b88aa2. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/GBCJY2000126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45873c46a11dbb204a9e3ebcc96fde8074f5263180df2730a261927725468926. 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/GBCJY1600021.