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 0x789599a154089c46ba2f9844a0b2fe5469634341e96e8fbebb81cfe40279a0ac. 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/b4e5d1bf-0543-4fdb-9fc8-2e81566a6f46.json and https://artists.proofprofile.net/proofs/artist/b4e5d1bf-0543-4fdb-9fc8-2e81566a6f46.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 0x665e95f829e6e69976b5f6137cd6756997676738a259db069703f74785dfdb16. 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/TWCC32305650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66452df272f4916be0084dd4f583e384f37514915609efbfae2df5f938940726. 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/TWCC32305651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3a7d08f19b9973473e6786578b55efac61c3a56f92d143f511388ce9b8ad85e. 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/TWCC32305652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9bead5f0c8db83e4740bac4a77d5531f9d02458f9568d28f3491cf8e4049872. 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/TWCC32305653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12537941aad38ea0925125f7930c6e39047ee8e4e0ea788d9e81d156b3085cba. 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/TWCC32305654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11aae5c42859cc081b7b40fd6d62883b1aad4a732f08b7b610219736df98f926. 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/TWCC32209581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4fc3d5acd5d5f43fbff6467a5a45b132f7e6cda658c95d5a53ed7252bf6d707. 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/TWCC32200324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec95e89ec6c228f04443b58630bf99156d2adc3a87bc4ceaff0f34170798ec4d. 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/TWCC32320728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e9170e1c3bfba36abc9cff8bb0345f2fb82147f095209ab551d40853a2262cb. 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/TWCC32501991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59867ea4f90426d81b5451da329eadf8b1292ba5d5c340deed2341e3fe6b21c9. 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/TWCC32415534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5238282fc92be83f6a94784a34658a0e28c84b526db64efc94d48aa58e21c765. 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/GBMJG2413420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd1ddeed72583e88e878804901d8b44f7da9bf5bfe1aa62ca0f301174a2dd7c8. 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/TWCC32402613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f896706109a2827b4790d0014e31211c5bd2936b017af48ccd66e602a5b8a02. 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/TWCC32401255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc36fe328c3a6d63d9e048425ebba013f56442daf0552050ebab4044d3fbe7454. 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/TWCC32310446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa39c77ebfa36f50a41ec2d088871f9225835eec7c3db7ae2470ec2f80f90adaf. 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/TWCC32310447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07580bb7d25fcd6c2d8ba3e7d015f5abaaf91a6a273da7efc6d39ef12168123c. 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/TWCC32310448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x538db72159a7f1c6148d681935a38a5cb20a8c4f36d85dc37e1e07b064f17df1. 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/TWCC32310449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a2ae170a0ea9a14da4a63159ac209bd6ca73c8e28e59d4f1ee6e7853fcd664e. 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/TWCC32309999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc98eed6227caea2446c079f9e8eb72832cd8313951794f0e8c7ff5612bc258f5. 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/TWCC32309456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc02033cf0cd141c58876cd0def1fbdcd3a8a7998b6d89e264a7914f2152a937a. 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/TWCC32303777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8c254fe68aff0ce50303614406acc2d9afbb2c77f0ba45b7b2bf8d2b9af9e67. 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/TWCC32300568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x180b435db0b626cb11c62738aa4086fdd7966df0442612e27a3b48b061fc45cc. 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/TWCC32213555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2172d387577eba86a867925e431af9620d2353c3e1f973b073055ba9e7b4928. 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/TWCC32205156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfca421a8c82d114a715b984eaef24a17af477f5f164600a72e0fd94dd83cbce5. 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/TWCC32202537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aaebd7a24fd85b741f795f30b301d5fa73a8e1010d208027d562f645f4a76c3. 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/TWCC32202538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x381373d7d4084279b9d3de4276e45e6d677f04cf509558c14da5afc2d926212e. 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/TWCC32123884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeea5174e3ef9a31746caaa64eca6284b60aef8670a90f5d1397ab2d19164afb. 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/TWA532500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee35900f6095bfde88afdbf1eca9844ce5d0e01912f9d3a55ce46d2d992ff075. 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/QZNWT2111615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb4659aad170cbb2ad33dc8800cc8e9b912be3a88feb004b92414e305a2fe803. 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/TWCC32506126.