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 0x18d3f6795893aa5f9ce2567c8460ee9cc10139ab83da0f872f44e47b0be99209. 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/1cbf9b14-1854-4038-baa7-e32e038665b4.json and https://artists.proofprofile.net/proofs/artist/1cbf9b14-1854-4038-baa7-e32e038665b4.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 0x59cf1f6b5052602551b8cf1a37693f5866901b213646844680a3dad617b17b5a. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QZK6G2278192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ac0b34b40aa154c44020290a18147fd2ae0ffc58fc47561fa3ced88515fd23e. 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/US8392300069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b8b98b1d3735707b7dadd000dc12d408100e96d49e77c885ee56224f53a6263. 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/QZNWT2205560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddbe471f967bc3bfa81d14bb9a529ff9b8cc69dd2f69ff7ed377e7b5773dc69c. 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/QZNWW2238551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc00e71adfc09744446f2e0b9d2eef0d1fa3c187baaa262807f0e3e1dc81b296. 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/QZMEQ2248194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefe9127113174ea97f9d892ae1fe761ed41beb7eb31edca79be6eb657bed6891. 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/QZTAS2251394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac6fda59afd40cb4dbbbafbb834e447549ca4d6c178cd1478f3c338eef705d21. 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/QZFYY2307463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52c11bd843b15ae77a326e514ebdc5c1ce4e81bb968d6d892c38be96c0e4eb48. 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/US8392300070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69547553f6f58205aa47fee5f6ee6a1b540dfb5677f00b3874ccd0c694f0a264. 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/US8392300071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42029a8dbd661beba98b2d076b48284536f5668242d864147d26b90925cb6a3c. 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/US8392300072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5814ce1484daf687887453cc16a368363c90456b9ed4937ef66a151955a01a4c. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/QZK6K2430068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13b50e4beb0977f1db08eafadf1e989b9f13bc2d5a785de62a81bcb5ce8ad164. 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/QZHN92453977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6de906820860164c489e678cb118d569ea8bf2a213e9f17900695fa7d56c9835. 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/QZES62409472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x028320bf60cfe0f033e8ab9fbf9f3e09df1f7cfbbfa26cc091f85330c32c9b11. 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/QZDA52403243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13b50e4beb0977f1db08eafadf1e989b9f13bc2d5a785de62a81bcb5ce8ad164. 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/QZHN92453977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x028320bf60cfe0f033e8ab9fbf9f3e09df1f7cfbbfa26cc091f85330c32c9b11. 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/QZDA52403243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6de906820860164c489e678cb118d569ea8bf2a213e9f17900695fa7d56c9835. 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/QZES62409472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x028320bf60cfe0f033e8ab9fbf9f3e09df1f7cfbbfa26cc091f85330c32c9b11. 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/QZDA52403243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x028320bf60cfe0f033e8ab9fbf9f3e09df1f7cfbbfa26cc091f85330c32c9b11. 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/QZDA52403243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45dbb6c22332e86fc07095510dd7bc6095992b1f1979e875e4d63d24092611c9. 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/USY5K2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc00e71adfc09744446f2e0b9d2eef0d1fa3c187baaa262807f0e3e1dc81b296. 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/QZMEQ2248194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x271dbf1cd515d7fd64e73e170e8edbab0cb7442381ce9cf26764459679f71ddd. 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/USY5K2200022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59cf1f6b5052602551b8cf1a37693f5866901b213646844680a3dad617b17b5a. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZK6G2278192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59a3bc5bffcdbad2c5d73c34bf0bac41a7bf0e2528dc9f652647ebfc9b2d0b82. 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/QZNWZ2167742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf28580c3873019369baab057c65e2fa37301e50cff15306cbcfe60df63b25bd7. 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/QZNWZ2167743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e593d4a97598c968c239a616dcaac6bf0536b13d1c760614e1c2420d5a47a1a. 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/QZFZ72070419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x905006644802011b4c5427cffa91ba6533f7047a5a551fec4617500b4e4aa4c6. 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/QZFZ72070420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa120992e5f9b5154fb4bc0b75fcfdc63532c434731e15f0e412b3b6625b55695. 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/QZFZ72070421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d51195ef30597d14033bf3eef8260aa2c1f2d38f6c606196d5f3b602ba7b28f. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZFZ72070422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18cd0dcb978441d481870e35ce33649ff3afc5ae360594505b5a475c900c5379. 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/QZNWY2480081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5814ce1484daf687887453cc16a368363c90456b9ed4937ef66a151955a01a4c. 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/QZK6K2430068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13b50e4beb0977f1db08eafadf1e989b9f13bc2d5a785de62a81bcb5ce8ad164. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZHN92453977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6de906820860164c489e678cb118d569ea8bf2a213e9f17900695fa7d56c9835. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZES62409472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x028320bf60cfe0f033e8ab9fbf9f3e09df1f7cfbbfa26cc091f85330c32c9b11. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/QZDA52403243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb85acd6dc401532de42d28428bb68af37d3e4c9618bf35578776c987195ac094. 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/TCAES2079733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc3a34d2bde5d2b33b7b04cc5fe195f698f09891e8d98fbc8071b4c023fe69e5. 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/TCAES2079757.
O Come, O Come, Emmanuel (feat. Sandra McCracken & Skye Peterson)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb71514d50a449fc3bad490292307faf335f28e8638c419af95e648e17e9d07b. 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/TCACH1593150.
Come Light Our Hearts (feat. Sandra McCracken & Skye Peterson)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x319adcd13829b087a2ed79e06664239750d0def08da487a2d7e575fa1ce10181. 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/TCACH1593151.
Great Rejoicing (feat. Sandra McCracken & Skye Peterson)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e54f8874267a36fc82615e043798e571dec005b39f0ae69b50434acb75f1668. 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/TCACH1593174.