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 0x1a0198a22bf0ee6d49004c17ccc636027a615986645b122dd5f4e87cd80adac2. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/717ddc90-3032-43a7-a51c-e735f9d11f2c.json and https://artists.proofprofile.net/proofs/artist/717ddc90-3032-43a7-a51c-e735f9d11f2c.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 0x28742d820d42e87e85274267fa85cd3a67dfe48ec6f576b8e5f9b1241df8744d. 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/DEZC62383987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47a4370e40bb53999899fe0f00ef84908b74b771089c5fe79532461b56cc1551. 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/DEZC62383988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccdaf77920b76c9985c100d928f7f68955939dc82e5f42ad8d785ee8d0da36e7. 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/DEZC62383993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30bea8bbaf539db5927d5ddfb8d1af740dcbb0c506f6284dfa35c372bc5ed4cd. 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/DEZC62383994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5cc82f245c91b8a1a0f8c8650d26176d21def6f4e48973b28cc12500d6c6328. 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/DEZC62383997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00f11561c2bdd3fe8ba6383459bc215bb2e1195a35faa528402794a7ec8fa9d0. 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/DEZC62383998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d24b3b1ac47efa25b9f9c7e2179b806f5999f3c6dc17f8528af703c935f0cfc. 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/DEZC62384002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe801db989fc5e944765df66ab37db4b6b54b063f93fd2dce3b4d012018d25cf6. 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/DEZC62384004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf18b042470cba56ade5e2364ccfd8aadcdb7689f2698d08f906a35c487575d7. 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/DEZC62384006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x695ae13adef76f18a490a738246740d17735fff360e857197dad184746eb430a. 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/DEZC62384007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34d96abd52510476291b8624b7baac57e9c384c4f60bcca30f6d827c59800477. 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/DEZC62384008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8b1d1d8fed0331f1e59a3d3a6ab7bd40f224b163cf21b24004d43054fa644fe. 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/DEZC62384010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47d14075f17122c0d975cff13fc7d3235a061ada25e88bafd35599b48ad599e4. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/DEZC62383991.
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 0x8ad222e8842658846e5947055f89958dc8828a9db3b4b853cb443c38e87e3da1. 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/DEQ022291965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69a6daa56fa42189d70937cc59f608695bac35bdfeb5874d5240b2821d6a8b13. 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/DEQ022291966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd15524b4eea98f381ed2f658ff0f4a0215fa076c9ad87fab1a0152ffe11f8a1. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/DEQ022291971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7653712835c8daccaf2e9d7836c4d5e340529eb2ac37643e598dd33445f3d65. 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/CH7812415938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a5ef123c2c605c19d11d028c93db40f9d7818c1f9cd8421725cb32286d031bb. 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/QZK6F2170419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14af6490fa3cfe3174b64b9f485ec7986d9347c3aecae547aa6426683c683722. 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/DGA062468365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x755e09d4542e7cac07ded12f25f0c178bb47b8a14e2ca41457c452504b9636b3. 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/DGA062468366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x884ed8272fc3ea4fd9bd8c68ea216746e90535348bf15480791f032c6bad9ce5. 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/DGA062468367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e500748acfa2c47b58403121aad7844cad821c1edbd7586e2f64feb84498eec. 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/DGA062468368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x823d11c61ba75fbe9c1943e56ae49f0629d225eff46ea04b77152d21b7fb1c8f. 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/DGA062468369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08a986a32b79427a8294bf3555396b9d882bcd5fcff53702c6b5399d1cfdca99. 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/DEVU52087649.