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 0x7e970d73046c7beb1b61141c72886ada062d2987e713da79f9236301922fd958. 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/c57af41d-f4d3-48ac-be89-84c5f4ca59cb.json and https://artists.proofprofile.net/proofs/artist/c57af41d-f4d3-48ac-be89-84c5f4ca59cb.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 0x1fa19fb7f19f3bb894b3db9dd7bdefa5947873542d3a22e0e2ce7927d52aeee2. 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/INH109238440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9edfa718d7e61fdc4e43450ad015667a30f44e4e94243e75b97fd0de9522b8dc. 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/INH109238250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c093e129d5eb5fe7264ff3091aec82891a08a309a650f172660830ff3211044. 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/INH109240430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe388559589d89339da7adb861d158b3866a920187ddf4fc981af321b1946dadc. 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/INH109537930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb85382dd517884c27455c47331573614550dc8f276dc057c1026660a7fe5d336. 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/INH109245550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d06cb302f901f489d62f8dad17fa5834ee05ff4f51ef30ac58ca0cda3036c84. 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/INH109246020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0116f2a546040dc797b1565f5330876a8decf4b96124c39c91776ac6387d2a19. 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/INH109240920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c101a7689ab8a0bae5a07b55272e8ab812d029b526a6c73016cca51e5135beb. 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/INH109534650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29e99a5df2fbf3b8daf67658a12e140a1e9acc37a58b44c1f1594394a230ec51. 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/INH109533510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc57c17ec7f95413bfd5feb88851445a95fc83d8d9ba1831709af4005ec9ea62a. 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/INH109236750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8c2fc23451518aa3609a3f639971bd7e66dcccdb3bd2ff5b2dafe76a3a87459. 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/INT610750505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60d2180b946bc2ae8a56f57fda2c59e03fa19dc265debeaec10c8664243f0dcb. 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/INS931611112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a7b6ccbef7c06ebdd81f0f54ec60e3c7dd6e141303736300318398bfce969a9. 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/INH101200440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a117bad76be180dbf37a2bfef9a3ac0737aaa101f1abf1d7d925f1b2719e89b. 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/INH101200446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x738d1a0026c7b9ee896b0d1b3ca4086ebbe8417b65dc25e828de5a1bd1e7dd73. 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/INA191000132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6be2adb4896245048d5fc14b2bf8bbdcd5a66a1faf556abebb8bddba948ba7c. 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/INUM70503664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67373e922b2fdade27eecd2fc4c5563b8215f3fecd3c8c5924f2d215d54ca5cf. 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/INS180461204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x899dfb3c4a170ada82d293c97b1942a3be250c7151eb206929e83bed40b99fb1. 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/INS180461208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cbb21d6b6cf6583319b4a446879adf680475bd3cca0091e29743a81fdcb9c17. 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/INS180461209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2851d2f3f1032505f4373dcde608a2afda6d5ca47126d233e67fcb1ca55ee7ad. 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/INS180461210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8447f1da561061e556ef462ec1142c9dcd6806e7a472dd69e89a81c6ba1d133f. 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/INS180484990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc126d32b0def7fc8cfe6dd24504fd76c9aed177a9870bb31350a0e5e695760a. 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/INT100100899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x102368116f3d58dbf67cb489038bad8fc12ea74b6b3bf69e63ec5317ec195efc. 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/INUM70502504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x708f8ae34bf02833cdf7d38295951d310f4034bc2b888ec90305007cbb0edef1. 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/INUM70502446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe87c6ad4e1cb4c98b001211edf2d58a8d7b20021c867b2c417cccaf4f5c69c7. 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/INUM70502508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32a19a2a8d7b296fc083a0735caf201ac5bcc4fd9d340c894b313a9f72901b6b. 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/INUM70502506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c37917ceb77f43672ab410a9ead0880abed2e1717f596a5fbe17f2a259bbdf0. 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/INUM70502447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fa5690f3f2bf655e4c0069b5a53bc038d944fa716bf881633bdef246667beb3. 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/INUM70502507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6a077a5391c7ffd1e3ca31830ac8b5e1a9a7d4226cec34728270eef924f5d42. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/INUM70502511.
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 0x339bc4f23ff176cf51eb9db36f1f9bdc07dea1c01305295315022e2bd620a9c2. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/INUM70502445.
Dukki Pe Dukki Ho (Trance In France Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b814d40b27e3a2698fe605ef72305d536e5eac12665325c8cf827cf581652e9. 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/INUM70500712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a2d6eeae26c768f5f83def4cea5a5639492fee86f04d5989ed5526728d7c411. 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/INS170000109.