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 0xe418354651cea905224a9816b2883f12da3ddcffad4eb75ea34a03d2057629c6. 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/1c3c0863-674d-44f0-9cb5-dd5a04ac7a0e.json and https://artists.proofprofile.net/proofs/artist/1c3c0863-674d-44f0-9cb5-dd5a04ac7a0e.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 0x743cb9f75ba44bcb85fe99ffcc696daf2cbc064500b499f554cd078c689aea2b. 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/USBKY0506114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7660caa48e48bf8398997f1c7a615c6edd6e06ef607e082db6fb86c52042deee. 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/USBKY0506115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11ab773f32a2a02c02a2aa52215d0d5e28c95dda4696b2072fb56964e899696e. 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/USBKY0506116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83551d9e0fd241a6b04cc66f1a7d8bdfa747666dcce8efb632811b5706134f7c. 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/USBKY0506117.
Tie A Yellow Ribbon `Round The Old Oak Tree
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04771875b7c082c8df62ac4ea1a84ecb1ec17b0d2dad88681913952b36b6d890. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USBKY0506119.
Say, Has Anybody Seen My Sweet Gypsy Rose
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a624137f1dd6901c9ee8c54360c125bfeb54cba0855a296aab3fcb58daca375. 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/USBKY0506120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe78d94af6c1fff16aa39df6ef383b488e19631e04396596c6330566130be1516. 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/USBKY0506125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d7c7df2b48095652650aadacd47089f84c36b480f6cddf660c41ad236e8f69c. 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/USAR16900117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb23659cc4d4c9856a5e740af30de4b3cde803723aabcbd62dc9270f80ff65bb. 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/USAR10400517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cceb8aa492aa6b4047dfbcc0f711a73faa10965133a1913511f75023d71c681. 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/USEE10413064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aa52cb05d2ddb20dc645b32d216a629ae289cbda1ef1ecc47a1b700370569b8. 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/USEE10413068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc168817cebe1c172b46c02b3723cd76865fcbb26e44ea2fea4786dd4dacc885c. 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/USAR19800313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07f5e0fc7a3a0cf461fc616bb76f2d6c5472a362195a5e443fcef9c316a6e2f0. 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/USAR10401119.
Tie a Yellow Ribbon Round the Ole Oak Tree (feat. Tony Orlando) - 1998 Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5f4cbe51a9b6476003403df64f248e7e69c0fd72c1cae359656451252570e3a. 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/USAR19800305.
You're A Lady - Digitally Remastered 1998
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe24e86aeb6024dca7b72b999d2a027d91ebf04a5cd6b1dc8862b753cd9f913ce. 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/USAR19800307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dd5766f7ac643ed0f45106821a48600a3f82d13a3428c56c264a088d6973c1d. 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/USAR10300225.
Say, Has Anybody Seen My Sweet Gypsy Rose (feat. Tony Orlando) - Digitally Remastered 1998
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb5affd91af1ee5c94558a956357be937c0ab6df0049e25cbddd0b8784343d05. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USAR19800303.
Who's In The Strawberry Patch With Sally - Digitally Remastered 1998
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8edbc46b4068df4a1e845fc9892e5e9e210e63b5e71b61acf98ffce82bbe6ee. 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/USAR19800306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85a39d260f139dfc02828f50ec3923a5e8d2bea6553355b30fbb5c8c8d34bc59. 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/USAR10300215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a18305959d182ffa99a8d48d4f5708eb9b8083e53f23ae762260278c5ce6044. 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/USAR17500116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36219bc21c8a69ce057d97f1f4e471feeb475739c3d7b0421e8b455cc74ea143. 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/USAR10400991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc6741f160c9e21137e6cbfccc55f02e2e7f811d6a8a52e20f62e24dc6a3ea3b. 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/USAR19800308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50409538de3fed742f4862eae8904f6dc78d03526ff8deb7fa46d82df8e23d3d. 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/USAR19800302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe24e86aeb6024dca7b72b999d2a027d91ebf04a5cd6b1dc8862b753cd9f913ce. 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/USAR19800307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5f4cbe51a9b6476003403df64f248e7e69c0fd72c1cae359656451252570e3a. 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/USAR19800305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb5affd91af1ee5c94558a956357be937c0ab6df0049e25cbddd0b8784343d05. 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/USAR19800303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8edbc46b4068df4a1e845fc9892e5e9e210e63b5e71b61acf98ffce82bbe6ee. 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/USAR19800306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc168817cebe1c172b46c02b3723cd76865fcbb26e44ea2fea4786dd4dacc885c. 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/USAR19800313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe460a7bd7fd3722e1d8d46df33ce8cee02c9173f1a1fe733a92ef67b8d1897f6. 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/USAR19800316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc6741f160c9e21137e6cbfccc55f02e2e7f811d6a8a52e20f62e24dc6a3ea3b. 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/USAR19800308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3d958c4fc06d45a80776ba10409c815a5c70dc27b7f025a7d364f62857d9340. 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/USAR10401113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc22d4b6cecad712a141f8ba361a8e48195828e91a1d00b37aca6778a1cbae1c3. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T09:56:36Z), 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/USAR17400108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaf99e810312f0c75798edee933f7be53561e2ffca4d46485fbb9ed6e342bc75. Chain 2 (Bitcoin): anchored in block 959138 (2026-07-22T14:10:55Z), 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/USAR10401114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf822b9109aeb299ee4fe52422c03fbb719623ec9daac190e9f2eeb88ee938e4a. 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/USAR10401115.
I Didn't Mean To Love You So Good, Juanita
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce05852f5d6bd899581194066782f0b3be751f579721c13f1d25eb5ff07985cf. 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/USAR10401117.
Tie A Yellow Ribbon Round The Ole Oak Tree
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5f4cbe51a9b6476003403df64f248e7e69c0fd72c1cae359656451252570e3a. 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/USAR19800305.