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 0xa4183d673b7b8987362cb524a6418c46d5e6d5694602abe64aba66aec0763838. 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/f8b8a351-412d-4371-a35f-36bcab223d0c.json and https://artists.proofprofile.net/proofs/artist/f8b8a351-412d-4371-a35f-36bcab223d0c.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 0xe91f19806178910e801558fa610611dee4fef677be814c2692d0a16395322897. 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/CA5KR2437137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf446e91946e8346cb8b254251b212aba2a2dfdbb8b5d882f63b2e986d6eecb44. 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/CA5KR2437904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x331bdda48be03b3408cadf0004ed9b818707efaf8918a6698532cc5ba3b6c0d0. 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/CA5KR2421219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9d457aa01f4f846be56185c479c699337f4a0373bcd59c338c7d62dba392c2e. 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/UKXN22334437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5574b59623348ac85ccad61c70c9db269b4c368fa88d86af09df2db24f90c13. 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/GBLFP2394174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48eecd5ba7d4fef8eca8f233540b1597cfcdf6d2241c9d3719833ecd191fad08. 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/GBLFP2353878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bab3d7b67d394b8b82e0f2b9a7c4eefd8c6b4c7abf232817c523b4e1acbecc5. 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/GBLFP2341162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6984fe02d47103d9d0b024d7f40b65f9572ab1a35633dda3cf080a6c7213189. 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/GBLFP2382642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6984fe02d47103d9d0b024d7f40b65f9572ab1a35633dda3cf080a6c7213189. 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/GBLFP2382642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bab3d7b67d394b8b82e0f2b9a7c4eefd8c6b4c7abf232817c523b4e1acbecc5. 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/GBLFP2341162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48eecd5ba7d4fef8eca8f233540b1597cfcdf6d2241c9d3719833ecd191fad08. 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/GBLFP2353878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bab3d7b67d394b8b82e0f2b9a7c4eefd8c6b4c7abf232817c523b4e1acbecc5. 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/GBLFP2341162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bab3d7b67d394b8b82e0f2b9a7c4eefd8c6b4c7abf232817c523b4e1acbecc5. 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/GBLFP2341162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c53426d3a9017c8dc7af0692e64fd6b46cb109a17597a67c648da552dd88942. 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/GX3Q92394463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79a59d527eb3f9ef488a9be56ebdb82a4bd2fb077a2fdc3b9bd8c7ece6a4f690. 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/GX3Q92363506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4b8849061b7a76531527658a5e1d1cc7c2d58775b216e10cd6ff6afe3b521ae. 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/GX3Q92321960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea2338bdc517146d6d737c88d683ab2076c385a94b7c5d265b187d6829a2f803. 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/UKXN22297202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf305bd26cf659a1b7782baceafb9b428afb3671847c74bccf5750920c398cf41. 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/UKXN22275919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a61f4fb30526ba303b36df02f026b608914a130366dd7a94edeff2d083f9cae. 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/UKXN22245830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8ff471bcb656481c51fb088de6e83fcc773d89e360e93fd8a465e619e7e9dca. 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/GBLFP2264261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0109fcbbc9eb929edefaa45a2908694e1b2b823e53278007b7de3c4feebedf9. 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/CA5KR2218642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe290fcdd54f01234787b6f737d0ecc6f35671ae7236973adc40605d0ac90dc51. 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/GBLFP2208986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x813b80b333dd4d7283a8b6d8c33bc830a8013d0bf53876d9422b9110e2f9ec57. 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/GX53U2088826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d20afb402668b00e5c368c3e6082e4d7ed9150a02d5991dd11b6e9b3879bcab. 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/GX53U2030667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb4efd414a6f2e38c5706c99270a12e025cf36f608035c72ddeede18d486e37f. 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/GX53U2013674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb074d68793198e9c6aa7dd14a15ecfe017e834d1a43f8c53d008b5a854759987. 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/CA5KR0015028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea2fb71b9041b953b9517f80ab0a7ad97f0c27a8f28969defddccf3414535929. 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/GX3Q92141077.