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 0x2b59d228d14d0148b9351ba9326868c59b2e8073179f8db55ea72453fc27cbc6. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/141e5373-bdd9-42d4-956d-da94e1db9655.json and https://artists.proofprofile.net/proofs/artist/141e5373-bdd9-42d4-956d-da94e1db9655.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 0xd13539f8275ee605406981dbe6b3ac3fd75622aae329b7f3869d490086481cf1. 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/USUS12100016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d8fef15948ee3934539067e96c7f1ed6ffd585d7bbcf7c447844a3dfc6e0f1c. 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/TCAET2009652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x708b4bce246faa1444f1fdfbbad16f1c15e351494c5dee2b9b5d86239b03add7. 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/TCAET2009591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d99f662667e543b12d71d03dd383b7ea341316b99a81bd298f53c6dd8452919. 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/FR59R1876877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b79e9c9c4cc94cf84412e20f43ff4623a715c4375f25e8be580cd891140a31a. 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/FR2X41837180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x774135ff904d8c6afe3833a93ccdb1495d31863e7220dfbf82a8a2d246212e90. 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/FR2X41857650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b1dab7d548159f399bf78d6e7559c3b0ef748e926d55a5bbd98ed60db7b5b50. 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/FR59R1876878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97d14894d79a1faa0239f27f8871393de308359c3186b1a4a275ec39676c4283. 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/USAT21705355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe692c8b2a3d82bf5905680bf94e834bce0defc3657c399aa2bb77bea51b88386. 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/USAT21704751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ac62a3ad70d8e1f30e9cf65b45f36b5b92fa1e0da5934fc50e71684ca709462. 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/QM24S1702304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2fcfb5bd2d32b689aa9e5a304bdf83e2d7ccad532a1b7acfa7ce40d2d111699. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QM24S1702306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30ab26039e1770ae22e4a0718d81ef53d84f26f89e41d15644029b964ffba9d3. 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/TCACL1661043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x313009d1cb3054d257bb5d5022889149154d82e1667e2223a0c4e519d12aa7ac. 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/TCADB1764246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd746873c2de6d7ca38af6f5b0cde121a05f77e7b5b65d9e291540f5568a67885. 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/TCACZ1774825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa2ab81890d4cb2ee573526c4ff436c4bd4a711172121a257082404b185ff1d9. 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/QM24S1650501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x328a8b687c3002662462c9ca6fc3bb8349a0bc3ff6c1c117151dfca095774c23. 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/QM24S1650502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f384b4625aa1a2b4e4e48e3b6f9a57916428e5b2394a849bda3f8658a37711e. 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/QM24S1650503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15a332508d2429e64e1a57d5f49252a1624a2df8028c60c7637c9be5fa25e3c6. 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/QM24S1650504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40ab86e9d0a24a38b01402064e313b2ecf1b0bb4142a509f4681da6956bd7f45. 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/TCACS1685855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x502a603e81329fe89e6c68892ccc4c9aba6b6c03a9545f2acba3363c65dc3a9e. 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/TCACQ1690160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x475b275dee0d29770762a7f7a0308c67293510032a561d5054da402ef5d5c0db. 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/TCACP1615578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37dd1d55c179ee3e6e4494ad7aaedfe86c81bcbaa2c6b1f536ec2ddb6ba22e28. 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/TCACO1601568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30ab26039e1770ae22e4a0718d81ef53d84f26f89e41d15644029b964ffba9d3. 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/TCACL1661043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd13539f8275ee605406981dbe6b3ac3fd75622aae329b7f3869d490086481cf1. 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/USUS12100016.