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 0xb39e946bf89ade7f52bf765ac767ade0a7fe387c420c842c987831aa2f3c32b8. 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/cae31b25-1763-47ca-86ce-0ccb1344b062.json and https://artists.proofprofile.net/proofs/artist/cae31b25-1763-47ca-86ce-0ccb1344b062.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 0x3f26616331f356fe84cde5af32e9a7714c4d13e188ae3435857b3f3c11d607b7. 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/DET751700025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34fe6572069bc897f3746e8d33eb08ae8b5298546b90de110623dcd35a05d0ef. 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/DET751700010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x420976708156635ab227e48952a6fa06bcf6acf0dddd9c86683dd94e3d194603. 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/DET751700012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91d8bac8a4ae554119f0a8f2ed2903adb41bb7ae588a2fedbd03ce03e655542e. 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/DET751700016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4151eec47d10d4b4e3f2e5e18204342cce77ef0c042e2a3c4e3d36468c3da382. 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/DET751300039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c2700dd1e7b946783a0c0a8eda4d313569c7758d4b092a243941cf9d54eb272. 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/DET751300042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x600f788cd00b1124aaeefe2511530004e880e664cf3b06caa44c6df4f74d26c9. 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/DET751000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e7f73362341d2752f30d7b9c038d52fe4c62ea7626b4d3ccde5b894dfd27d6d. 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/DEXO42360850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea5d95b2057f090d11f22d731489af7b81a19ab1170e8279de092030f7345733. 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/DET752300060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4177c86f2cea8fc8126df507a5f9591ae854be5ec587428c221030733a56a75b. 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/DEXO12329161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b60d223f59ea06d16350473afd812ce29ae422f492c4173514d78ed1c10120d. 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/US39N2311776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x140817ff530ba16d1f11990700e248b4104dbc5bd73ecd004b822c2ad684e3a3. 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/DEUD92399983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e98c28b6cc39c8c7a6ad1bd129c6dc91729fb5f67d040230a3414dca701e559. 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/AUXN22252009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69d2bc8a836a727a8400c7405755429e39f83da2c1360016435655f303ea57fe. 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/DET752100063.
Woods, Tales & Friends Remixes - Part Two
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bc50e836487ce3718cf48ee4efa29d1ef0d50d0e2c63c55ff22863c11cddc65. 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/DEU671704353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3de813bf629da71fd81f79157a82295c0ac3d1cf5dd6a3f32ca29edb0e35dc3c. 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/DET751800027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba69e1df187de50fa4313b3216115e7affb9953b10dd5bc66dcacf12e1bb47df. 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/DEUE22511741.
Herberts Best XVIII - Dear Friend (Mathias Kaden Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22d8ff5b606f5ea1528ba84a53e8267fffe40aaaf3e62858789d441bc956c02d. 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/DET752500018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0e493a2b660e66bac22b6821dc21bdd63628aae8eeb09d7962d63f4d6fd320a. 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/GBLV62411717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8d2937d0eb7f7cb8197b36cb56c04f8c91240d6e6b5b2ea2954b0f51914f92b. 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/DET752400074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x782e7c9cb1c52767410f92578b633ab0f1b6c79140467ece296dcdf60eafedde. 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/QM6P42415776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b94f304a92f722c3e68c28d333303cc9ed32d01404d98c371b12c1c91f0870e. 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/DET752400049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f9fe6f95bce00134a245619dbf431d4b5ea786a1292edea37c2420b68b2c95d. 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/USNRS2443567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x716c73e35fc0c9327854dbbc0d7e5ab0e12ff2f66a9aa725fc07e92707cc7c09. 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/QM6MZ2488704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47f037db8610e7023cdd247f93d5b27f224b72d93e8dca7f91bf63299040e176. 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/QM6MZ2488707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4d0d296f26d6ef9a32d08ad7e7af1c5a084a15b101d6d1090ab8ca785f5cf20. 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/DEY472473184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96c874bb05f65e5d2a57d7ddc9132e50128d6907c0d786f575e5ea52bdc63bc3. 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/US38Y2403757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b8b7c16b617070a641000a652465a468af0c6840c2a5b63126855505ecc4580. 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/DET751200013.