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 0xb80177aa12c4063a861e63622daf1e253e08bafcceaf10f9ca1f14dd818d22db. 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/f4615086-3bfe-4f83-970c-6becda687240.json and https://artists.proofprofile.net/proofs/artist/f4615086-3bfe-4f83-970c-6becda687240.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 0xd0456a6f1743dbb5c1bff90ffafb70700d53cd288075c4c380b4a94d804924ef. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USXQS2126566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1f77cd1185b71023cf1f07bf4a9c158c2e262f9fe47dffcf06dec022c47e855. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/USXQS2127401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb1ff7a2532ab4929d0e927b09788d017bf01782c99f0473fcc5357be99855d9. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/USXQS2129223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8521245c73ae0d3f8ac55086dbbbc6cd54cec8219c2e73d8348b2a1a24da111f. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/USXQS2230065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfef3ac914a37d771d42b627c4661dae0c0bfd103c952780f7b6426940accfc9f. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USXQS2230066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35c3780e91c97c6cfb2242725e114c8f455866d1c1605120663e6b1ef4f03987. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/USXQS2230069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ed46483f02bad6de3dfed8e5264f55788c34ad9c19b6c9869f641b06e08c6d8. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USXQS2230073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d019ffc2624328a474310cc0be1c7c818c886c5c1199992a80feefdc389538b. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/USXQS2230075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe793208a1eb713e7314bb3079a9b069cb068edb69c4e71aed882513dce1c3b80. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T10:09:30Z), 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/USXQS2332453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ce4386224f2b84a73d7c6bde1e4c4fa8d5a5acdbb424408efe9b92bf90c1907. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/USXQS2332799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa70a4a1579118af7ccf086c6b6a602118b58db2b046e9a037736287ca7a17fd9. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USXQS2333506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x417bddf2a0d4221de70bf92d05e20c45704ed1d88bfb6378ae467b8d8a292f33. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USXQS2333688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bdfe8f6e277da6217639f639860f613acc749021fd8ac3857f6907c269da6b8. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USXQS2333691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bd93fab222105b4e1d330aeba95ecbe77a2471a1254b0580d24f17cab579099. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USXQS2333692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59f12544892f4a528868e66d885d3d37369e232ca4a4fdb2b45452b9573a9f43. 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/QZES72452386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3017f3529fc23c1116b5415c74d4512e3465362956c89c2f04b9eab9b8caadfa. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/USXQS2435425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa14b1ab035c4aa16b50b270702fcb47494b2f7fde6927e4556db27344aefb8df. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USXQS2435427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9e52c40d849f11ecd5a5520319a21318017f2eec4d95440d00ad9fbcb534531. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/USXQS2435428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeff12f36ee9782249dfd6e68cb4c811c1427d8e931669fa5d7ff84e87c79f48f. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USXQS2435431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a5cdb4527ba789ff54470bec2abe757c3f9b0e4394d4980b4c8ba860ee368bc. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T15:58:03Z), 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/USXQS2435432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36e22572f528b03171dcbf128ed5cf150d39928577b3fd9f84fe8526b8a9f1a1. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USXQS2435979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9b91961424e0f23fc9b4b6efc752164e54f443330c863e74113cc0cc22b1c53. 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/USXQS2543200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0364a2ff0468aba33cbd21b73d2d6784aa334b00adfca38c78ec469bf3bb31c9. 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/TCAFR2130825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa26113dca50c2b242a7c9bfb05329aed61577f3c3240cf3930c37b977143522. 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/QZTB82496370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa26113dca50c2b242a7c9bfb05329aed61577f3c3240cf3930c37b977143522. 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/QZTB82496370.