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 0x65644c13e42a1ecd26a1464b808533cbecdd2bad6edd77953533f1ddcb29774a. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cda5d957-b597-4a9f-8042-98e28a6c78ff.json and https://artists.proofprofile.net/proofs/artist/cda5d957-b597-4a9f-8042-98e28a6c78ff.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 0x47ac3ea8a5f97dc08c04799a9cd2b32944673b54e39d1cc03a575bba5daf9411. 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/IETNW2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92ecbd30e5ac029e6f905d84c03a32eb00abd6176e4ae54f42c50374f70936e3. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/IETNW2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68db5489a76f7819c0524e60a1a6b562d40f719a74371828a84823b18ad1119f. 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/IETNW2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bcbb79ab20840799e0eac5100ae96528df7a692b111047a0a255b4bda237cfa. 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/IETNW2200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49ec703a6ec799769adda537cf0781b33408151d70a3240117d6cbb033d0303d. 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/IETNW2400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b3b92ae3837dd1d6cbbfc6ce3a5da3e44eaef6a28103f025293b4ff232e3fe2. 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/IETNW2400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b32ebc8b857e3c4f479d24ab6997a1f8b362932c5cf6147196deca9f2bb5403. 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/IETNW2400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c5ec809e60c7621d12c6e1be00a9a32989d211b1f518f3cd74d9508001358ce. 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/IETNW2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd8bd0d894bee9e17ea1e582fcb06caa25d34c8b6778d95c8277cc34713c62b9. 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/IETNW2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43229f16bc983692c8fdc3d104508d8533e1276788311d3df7ca077977e4e362. 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/IETNW2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7ee8de405e577e425e0d75c4006202b8878259bdcaf9f40bb1eb4be3fac75d7. 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/IETNW2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc48333051f4f8ceca75ffe9ca02d772e4d064207f417cbb52e1653d87663caa4. 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/IETNW2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x813cbb3849eca8d480f4d25bb0c548d6ed67b9018de2b9c3a00b86dbee048020. 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/IETNW2100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd8bd0d894bee9e17ea1e582fcb06caa25d34c8b6778d95c8277cc34713c62b9. 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/IETNW2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c5ec809e60c7621d12c6e1be00a9a32989d211b1f518f3cd74d9508001358ce. 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/IETNW2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92ecbd30e5ac029e6f905d84c03a32eb00abd6176e4ae54f42c50374f70936e3. 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/IETNW2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68db5489a76f7819c0524e60a1a6b562d40f719a74371828a84823b18ad1119f. 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/IETNW2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b32ebc8b857e3c4f479d24ab6997a1f8b362932c5cf6147196deca9f2bb5403. 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/IETNW2400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ab7bf1fd123dfacb406554aa3f3db4b5d76dd2bd081ba325fc301d1046b8cbf. 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/IETNW2200017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec20aa5aa30cb887c619462625061f00619344e178ba5e9313617514119bc9e2. 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/IETNW2200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bcbb79ab20840799e0eac5100ae96528df7a692b111047a0a255b4bda237cfa. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/IETNW2200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e43f30d7580890c42d46eb14caa199bc82cdf6a5d047c2168df33e763b7e259. 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/IETNW2200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb1c0f6920de19b8404c3785e2b75c0b24a25358514a6bfa7da6e7ee45e04ea3. 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/IETNW2200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x987651ae0906edf41996ef8da370ac2c5a1f338f443c656c4e363b53eb778e7b. 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/IETNW2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d71e31f5a2433bbeb4caed35afbb3988007002cf80c3f6056f0e9ef25035ea8. 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/IETNW2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab731e5b579c76ec9b214e13b7ff3c349a0a74a1eb386c18c63c2e5667a6dc26. 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/IETNW2100019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x813cbb3849eca8d480f4d25bb0c548d6ed67b9018de2b9c3a00b86dbee048020. 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/IETNW2100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x201e79eb7ec9dd8efd5c841aa735010eb095bfb967db3ac78bd72ae14892194b. 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/IETNW2100022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x201e79eb7ec9dd8efd5c841aa735010eb095bfb967db3ac78bd72ae14892194b. 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/IETNW2100022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa07105b148cf104b0ae5e8d115487b7fd5d46f06259f683964d0cc6d7255e40a. 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/FRS182151475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab731e5b579c76ec9b214e13b7ff3c349a0a74a1eb386c18c63c2e5667a6dc26. 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/IETNW2100019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1be2ca171f4de4d1f962d0e6d4ba5454042e7831b04e2c7dcd2415554d5a603. 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/IETNW2100017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5114c0d7118007655ec49e6ccc18e3e56b5f624f0954f5375accb3eb447beead. 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/IETNW2100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d804feebf743198a9526e27bbda08dc91e233d1cdb6e217ae9c71186a60e73f. 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/IETNW2100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cd490fc28ac417d5735300f69aac3070c72fcf558316508add1d67262024a76. 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/IETNW2100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f47cb29b283009445d28b2d2ea8008ce4a9d2925dce0e28f532ed96e3555979. 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/GBLFP2042202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe2f2f9e0e9f4936bc967bfceda673dbfe790a185ecbca969bb6abecf42bf479. 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/QZPLS2032098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95c6c0500ba6a3cfcf1ec49a92921170aa668958f9f409a4a7b2e3a379f10e6f. 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/GBLFP2044704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x519380ddc62ba1ed3b7a5b0e9e2d5f7f3efb27fa7e9a8ecea8f61a4bf341b974. 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/GBKPL1942505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34f2e720bc4bdb04e94788a8bc1fd2fe35806140dd249998208540672886a918. 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/QZES91841502.