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 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 0x08e0d589a8def033fe5ea523e37e7fd2fa5f52bd804671355ec021ffbdfb3e4c. Chain 2 (Bitcoin): anchored in block 954043 (2026-06-17T04:15:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3f95afea-bede-4c76-9f15-f90cc87648ca.json and https://artists.proofprofile.net/proofs/artist/3f95afea-bede-4c76-9f15-f90cc87648ca.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 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 0xba2fcc1056194daa5c9caddac049c34f787afa3bdf27cf4d9b93b972677f3494. 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/BRMVP0500705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42142473dfcb85687148c10b724c4529fa0bb0366865dcc6a5200b7f8b79f482. 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/BRMVP0200151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e00585bea90b318f060aae15ec100936d170c63f17891444bf783963bca87cd. 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/BRMVP0200152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a76f29e9d25b85b714e955068dea7f050ac7fab1c8a938d9a187c6cefce4604. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/BRMVP0200153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91b3203701a16b7db8ecb0fc9f867b24d53ff1bce952938f2c012beb1a50bad7. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/BRMVP0500707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbf627f72b5669db21878499dab7d8fc39c409447efa504cff4208f6a754890f. 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/BRMVP0500708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66347fa77f587ce7eccaddd57547b8a5b270622972e0d1f0787422b65ead65e2. 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/BRMVP0200159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe781fd8f3d19e37bc93432b18f6eedfaa3310e27ab38e2f0b419db913e5b420d. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/BRSKY0500918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd613417c8f0b39312fa5355d322aff14c475b7af30602d4c0253e528eb13dd3. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/BRMVP0500249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26547817667194f41a9cd16165fd8d2fb93b5e895c79299878667b2e0b8ae61b. 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/BRMVP0500251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87d9d542ef2b6987389a59bcb0a9fc5ba7da42838082d056a716ef470497d3e3. 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/BRMVP0500254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd62fbe354cbef29213695f4045d4d2c4df7efb33ea13151e58cc1a4dfa3fca90. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/BR19C1700374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb14dad3b52c41f19a0334f9eee9634348f689dd743de4aa2e34760fee9e6288. 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/BR19C1307691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02cbe3dbb659e10bddc61e0f529ab8ea19aaf5fc23c98dfc609de83f363bb743. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/BR19C1307693.
World Music Collection: Italian Music, Vol. 10
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63e2a753feb7faae6a354cd31620911996131962f152954a3ed7c8b97c0cf656. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/BRI9C0800376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d75e4002d5e09fb4dc5c7e1f78dafeb193349366be36ff047af32465989f748. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/BRI9C0800380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd04639495f5a8deb591aa36e76c0d96c13ada0ac8a1fd5783a73e04cd33a998d. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/BRI9C0800382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8d80b01f376616755fe89735f0dc0ecd2b8f0141dce504f12e3533a585ef9f2. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/BRACP0500200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe2f1c440114524890c20addeaf49a0f8329e25c3f08a562fc4b0c71c24d9016. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/BRACP0500201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25afe966ea518eb14272a9d19cf54f741c4cbacee37fa7cd5dfc1e556b91cdef. 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/BRACP0500204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x404cba9ef820318abd4510e96bd4cafb15d4ab8a562640ba2ca890880600b3a4. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/BRACP0500205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64b1f06d889019427a24da926a08604cd8fb7849d9a8a4f559b927d094f660b6. 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/BRACP0500206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66645c04ccb54e3c8af1a90a0aed58d61bfe466a7346939f07ef5f2537366b23. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/BRACP0500207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf094c2ce8f199794b24081355a0df06c79676f8280ad2e77abddc3ba72bf9fb0. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/BRACP0500209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1a9c11bc801a2c21662ff300cea374de37203cd92118eaeafd31513c15fbce3. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/BR19C1307924.
Love is a Many Splendored Thing: Love Is a Many Splendored Thing: Love is a many splendored thing
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ca08cab0cece6ddd103b9c78265155cf8d4657d1e0526077c0d619d0086c996. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/BR19C1307927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bf07f78a65318084fe5ca38e29e517dfad39ce1c68c54e475345054ed56d970. Chain 2 (Bitcoin): anchored in block 957011 (2026-07-07T08:25:35Z), 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/BR19C1307934.