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 0x74da7c8b8ee60589cc3a75fcff0be62bc9b1ed765a533ca5b712d463cb38281b. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b0a88fea-57b4-45ab-bc0f-ecbe0e593ac4.json and https://artists.proofprofile.net/proofs/artist/b0a88fea-57b4-45ab-bc0f-ecbe0e593ac4.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 0xec48ebea608514f73ba5d91d025896a740cc4d81ccb27472c9808ab9f70094d2. 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/ES7381100612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec48ebea608514f73ba5d91d025896a740cc4d81ccb27472c9808ab9f70094d2. 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/ES7381100612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc15eddb7972e7640b8e0d454063cb16c4757400c8ddb74f9a468e60b6e6342a9. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:49:13Z), 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/ES7381500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5074620840de924ebc59217bee830740a5448d4a6371a93e4af40f895c216eb. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/ES7381500012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc15eddb7972e7640b8e0d454063cb16c4757400c8ddb74f9a468e60b6e6342a9. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/ES7381500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5074620840de924ebc59217bee830740a5448d4a6371a93e4af40f895c216eb. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/ES7381500012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7761944e4f80cd734ec973455b633f98bcc7922a1bb7eebaaf7d7e42d35fc085. 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/ES7381700041.
(Soul) Rebel 23 - Reginald Omas Mamode IV Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe0a5dfb2b03a749d915528f7038ebd9fe8dccbd6d8b16ccd5d45dc5d633e884. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/ES7381800025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe0a5dfb2b03a749d915528f7038ebd9fe8dccbd6d8b16ccd5d45dc5d633e884. 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/ES7381800025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f73c718e11b6b2bc12988bcf8ef4f25046aa2310f8fc05b59d18813847ec84c. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/ES7382000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f73c718e11b6b2bc12988bcf8ef4f25046aa2310f8fc05b59d18813847ec84c. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/ES7382000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60bc30516cc34f1a3bbb27358a23fbbe8b848ef5e66f165d0d7eb0aa395ce170. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/ES7382000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34ea37f4ba18c3b1726b578d5fa42409224ff67f30c53d66f6347165c5d31bce. Chain 2 (Bitcoin): anchored in block 958850 (2026-07-20T11:10:08Z), 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/ES7382000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc62a396d6eba4e25d0863d8c65211bed9d0fe4d0c18096b2c9d5820f8794625d. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T15:30:00Z), 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/ES7382100031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40c7653f14f1ab3a4e5b930c3dc6541f6ba35bc0a06d711623eea0f3fe19f8fe. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/GBVTB2112031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3daa6383318ae1025387cdb95891d6a1865f2fad8cbfe88b5a150caef27b434c. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/GBVTB2112033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4dc94ca6b5551ae2f44bbde112e4060a343e16532a8b2fff073e822bc4698e9. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/GBVTB2251002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12c173286440ddbe129b66d3887b61826964de3936c1f9390f36abd0d22cff2d. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:58:23Z), 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/GBVTB2251003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b6dc9922b10ce2958788e8422e13beb08c19d230b4aa3be7fb6f578e688109a. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/GBVTB2251005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe10be456499117a47a0f0a3ceff9d36deab1f80d59f7ac63097188efefdabc37. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:33:29Z), 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/GBVTB2251006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa42eeab90d27e9667dbe818e77daeca689ee10f54d912f9ce87d75edf237bb9e. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/GBVTB2251007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2658255e697840f73e46acfd8e186b5af3559a80855b16a02facc984e3981eb6. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GBVTB2251008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbc942ed80d1722dc172f93fa9e0cde6ec00d26363b8a930bc1d3fc05fc6881d. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/GBVTB2364003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x104807a4b1a45f9ee4d7b306b5144af3b9cd605fbe95c89e204d3859128be449. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/GBVTB2364002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09db72f8557fa1667707bbf34651aa0a08edce4e9ff62358dc2c1bf365e6d85a. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GBVTB2580001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce64084fea7a9922d00ae21c9be1af3a8623dc0610a652d538c9b97e5218b15b. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/GBVTB2580009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4b7998571a5c8ac548c439a384ae0762a799ee37a19de42064d786e339a0057. 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/GB56N2500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x410422c115241b71b8698f964da69360b82124039160195ce0d03f32ac96e5b4. 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/GB56N2500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb34a64145ad7c99c24db95bf9e4099154f121450869e526f448334cb5c4100f. 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/GB56N2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda80edd1e9e3da636ccbf99dc2979feae9558f6485ed599ffda2ae9285ecbc04. 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/GB56N2500002.
Soul Jazz Records presents KALEIDOSCOPE - New Spirits Known and Unknown
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5074620840de924ebc59217bee830740a5448d4a6371a93e4af40f895c216eb. 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/ES7381500012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f73c718e11b6b2bc12988bcf8ef4f25046aa2310f8fc05b59d18813847ec84c. 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/ES7382000001.
Gilles Peterson Presents: Brownswood Bubblers Twelve, Pt. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5074620840de924ebc59217bee830740a5448d4a6371a93e4af40f895c216eb. 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/ES7381500012.
The Craig Charles Funk & Soul Club, Vol. 6
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39aaff14a1621b4066c43637370e8c8d90d7983ca588e98abbe187f9f0e4ea0e. 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/ES7381600124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90e326dd545b0cc1424c854402ada974926e80310737b0d68c01273b32a8553c. 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/GB56N2500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae8b07116dfae1eb399d3703df8f50ecff811242a0c18709226ec235a3fd8c80. 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/GB56N2500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x196362fec2818be8cd905034e882d14c87498d0680f35e881201cbfc35f81798. 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/GB56N2500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26df0aeffbbf5b94649ad7f37573f41f9089e612e232f3504787b1bac88b2f57. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/GX73R2200002.
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