1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xc9c4430a6f3fb08cd0076c30254979cc33af93879cf4fbf3b2d463156800f15b. 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/94f3af74-5fc2-4a03-95ea-1ef6ea600b78.json and https://artists.proofprofile.net/proofs/artist/94f3af74-5fc2-4a03-95ea-1ef6ea600b78.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 → block OTSBitcoinBlock must exist at that height 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 0xab9c446fb7a1d38883a930a2aacc6f002404eec2726687838d66b639d744d035. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QMBZ92074410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20650cddf98d4e2d3cf915505edbad9200bfeb02005c59b2fdfc0b2e9d7a450b. 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/QMBZ92074412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7212786528291ba3c7eaf960975fd32a39c5c6a2a80db741ac212b723190bb58. 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/QMBZ92074406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7654580db3f54eed6c5127deec00dbfc2222f86b7fa688d45092cc419b823cc. 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/QMBZ92074407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x522ce69562de29530c86a29d9b7229fcaf8b61425a0d57df8a9bc6d8bdad02ab. 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/QMBZ92074408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd735daebd0c89068ffd3779d1dbb1be35e255d2c7c9ef759734bb00805796710. 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/QZ4KD1902502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac909b845872d71ef6f37f1c707834631ba9d6e25249c434751a95867441fc49. 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/QZ4KD1902503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14060f23175b308e9db338c5134f23322745b9deaf42cfbfdb7b3e3f42375d65. 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/QZ4KD1902507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fb7193af844603fb3c7c76e11773d5ecc66f453c4f647c97a07e52649a02fe5. 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/QZ4KD1902508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xada4641709feec4f0a78d677d0687436d9e819cd849d2458c0e321fb2e876ac9. 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/QZ4KD1902511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9d58c68e7f0aa2a670b9c21e646c28622909db0dc15458ed99293f75162080b. 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/QZ4KD1600401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd071274f4496bb673a4b337febc9a8ca87a1efab7ed927d8e9f15ef2095d6ffb. 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/QZ4KD1600402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66d62087666c927d6a6a80b7533ea1f643f0218be643be2d23c3956630f332fb. 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/QZ4KD1600403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9d6dbdd50a2cbb66947056915160c0392fcb2d68b3b780cb338e555a19c9cab. 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/QZ4KD1600404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb973be618a07ab1fea7cc27d1d43e7ce8a4fbbf867cc38c1bc7e3579cc81c5a. 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/QZ4KD1600405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aec58c8ab313df56a492a6690d62e80b8f57b11be952494d31cf34568115cdb. 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/QZ4KD1600406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1970cbd4267110fcbd73b8d7f009d499a5d51ac8c0157ffeef5584ccae83d06. 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/QZ4KD1600407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaab69a7fc2df42e604f904c25416335129a00884db6ddba9282fbc1d3ba63c97. 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/QZ4KD1600408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2ebfd5671b6f1a1bc8b87fa7199651ec01d769d9dbc4193f8a9fe91d5865775. 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/QM6P42402896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0b52153f4cc5c13ed62e16f0c5ac2f34ae54cc6ab672ce76add9865363ed58f. 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/QM6N22431960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43df6b2f4c43de8db680f46821fd798bfad82a73db5a7363a4a4de2350728c21. 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/QMG492400929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x063b171ac629dd82d88fed992545995cbdd2a8bf885acc71e3891f316e4affa3. 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/QMDA72365047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69166c7122d6ab9de413451589f21c4035490a5ac0a03941db00ea8ad6f53472. 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/QZ4KD2206101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f47687ff3d6660c51cd6d7739d96d23bb5b742ee340240c460b48e3142c6909. 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/QZ4KD2206104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77efee92d8197cdb448cb1f4c380425e132b7c99268ace6a0e566f6bafd50ad3. 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/QM6N22197756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab9c446fb7a1d38883a930a2aacc6f002404eec2726687838d66b639d744d035. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/QMBZ92074410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb03209c3719db0c5ff21d05c282bf2b5dc9472d6e5abeb8ae71af54fe9b191ef. 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/QZ4KD2003201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15ac69f68591eaa5fb3416854032bf24c6c3e5a85ce63af0a46e43c465c0c7c1. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/QMG491727300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x066c6c273d5d6fd8fadef0c7ca6301d03413d2cc7a8f6bb829d607455e46cf1b. 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/QMG491727301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb91cad525a932f46c07a2e3bdf533bd05b4a554f902575f102684a80953b14da. 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/QMG491727302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6805ab55320206b3cc4b3cdaf38118224b8815d8a295ad71b4899662207caf0. 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/QMG491727303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb91cad525a932f46c07a2e3bdf533bd05b4a554f902575f102684a80953b14da. 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/QMG491727302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x557090e2c0e0abc4f1b08ca8d9aeddbe3d1e69d3a77be2be63d80a1f12be4da5. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZ4KD1701201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c3e7ed86a57ad29577c711ac42cf035e0040d3921a1440bf40cd6d369fc8a28. 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/QZTB72365560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a1d44eb4efebc508b0032e0238b923069506849f2308bc9eeaf9a0747665d1e. 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/USHM22451498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2da2589ba1ebb5ee8d4d2f22f43edd06a49f2a5dab1130e20c0fa47eed529c7c. 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/TCACY1790698.