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 0x0e9a723147c65b95c84c37ccbdd6fec446eae2bf0e7458df44940a6ed33ee1db. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b7a6b2e7-a6d6-490d-962f-4591ed7bc30b.json and https://artists.proofprofile.net/proofs/artist/b7a6b2e7-a6d6-490d-962f-4591ed7bc30b.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 0xb6801c7e9465b9711c98cb48ccf6d11db5f46edaee46e9a7c52b8c7d9f0ee353. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USY251634110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73f7bafb5cd4fdf99ee8f8562129e26e1ae15a1001bc3f0f2b1b4d648804d0d0. 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/DEZ900700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d510ae42906baa3b0d588306fb25214a261abb5c41358e09e3709527504206d. 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/DEZ900700004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf677af21f14941c898d222a6633d84d62c69baf90a887ba249248906637c7a43. 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/DEZ900700005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fee60b55a7e2b0900bbb379fb3736dbaa5d31546fede697cd743190b7779e80. 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/DEZ900700008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02d15d93275696eb9871c86ccff41cbd7f3e055fb905b92a16e0c039a7310fca. 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/DEZ900700009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa62e3a7e6f8687ca39823f93d90f9badf6e7b6f96ebae79cc6ac4b46c7647721. 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/DEZ900700011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4b384fd73f21521402c9e0ff1f18678ea221863be79d05964518d36965893d9. 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/DEZ900700012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aef4f656e904f5d2e0901efe372ccfc69e1f6fd30258a843e0d38bd25dbae37. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T15:19:10Z), 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/DEZ900700001.
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 0x5399e2e36113f3aeba9e1d71058f973201a03377b9b4aa038b526d518da5fc99. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/DEZ900700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2706cc22b33b2519babba93e80a7558444f3932a0b4bbd36150de004174e3d1f. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/DEZ900700006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd89fe3abedc2017f6858b07819de55d22cc368ef4829caffbdd16a8ad4ef7f26. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/DEZ900700007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20faa37b10e3f65aad61f21c08d9bddbe07f2e26905867bb12568d73110a58bc. 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/DEZ900700010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5933e1b238dc2fdc9e44de4113392203f905617df953c01355260e57598a6956. 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/DEZ900500057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3fdeb9b828d363914dd2673fc03854f360dcb38c16c0793d21987ff92c1fffc. 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/DEZ900500059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30ea622d28d1f28291da1671b4b085af8bdde9e08758647b0ace9734201cb91c. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/DEZ900500058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd8f385439e9d205c050f6c5005b0065e2a7101f3133fe6e4cd38c7f1d202447. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/DEZ900500061.
Fitter Than You (Pzychobitch vs. Hanin Elias)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x593c66f8938952b462bc0392156b4c12cb00379bd34e754a8f20b11db5014639. Chain 2 (Bitcoin): anchored in block 960173 (2026-07-30T00:11:40Z), 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/DEZ900500062.
Slut - Light and Shadow Remix by Lights Of Euphoria
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x833c6fadfbaa5566cec725b768a043a29b8573c22606238c8ed9f97cb3ed3593. 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/DEZ901500724.
Licht und Schatten - Spacediva Remix by Yendri
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d893eac7a61697e6f5f3ec61717ce91adb2d7a4b1d4641ebe132f58c5dddda6. 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/DEZ901500725.