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 0x82bd67fb2154648a5a543cb2e4f3909fe82fc7b30337d27796d16653fedb0bed. 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/8afe5779-4b73-4e9d-b40c-686b0df5d39f.json and https://artists.proofprofile.net/proofs/artist/8afe5779-4b73-4e9d-b40c-686b0df5d39f.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 0x44d455c70bb795be0a954ae3067c7ce5ab903ad92273ac14754889b5219ee0fb. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T16:29:49Z), 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/US7VG2037220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e9366a77ac1ea1440fbf655b2594318467e6b2e1b013988251cb5f32a4a13b4. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZGLS2083988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a33700eda6a6241c1e8f14fbee1cc5419f081b92a661956235c34b6402baef8. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/SE6XX2173815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a52ab13286f68ecd57047fb07fa126714d124bd72fc5bd90abd74dad738a2d1. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DGA072277095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2ee1f8e449bbc64c776ced15e8da7413f741cce547f31fa9437f61141d0ec8c. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/DGA072277096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c8dcec9eace10e42c94d91399f8e4dc59dc63d5c97ca0de29f519c457f412f4. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/DGA072277098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46f1aaf9116daad27380ebcb2421888a2013452e026703811f21dbf0cc5b2fa9. 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/DGA082212473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1559fd02e8ebdbf341ff17c494793d96fbfedc4d40ae534fd3e4fe31d04efece. 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/DGA082212474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x530665fde52f85fc781e799236dd12d2381ac41105b0a95bf71a8dfee4f4a6a4. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/TCAGX2390335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d7e10730557d3f3648a299435e5d2142cdadb19a0e72b72bd22f047d71cb207. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/FRX202388605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71be7154f2760bfd3b7be281fa5b15f0acccd667c341a59a7081cbc395a64426. 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/QZMEQ2369623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccf1284924233c670f4c1836a96e9abea6d6f923443d2d3217a7e7ff75b91cad. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/TCAHJ2318006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x895562851cedf12d5b2654f55238920f9f49ca51c452f4049b11e71b62fe3668. 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/TCAHN2348238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac75d73d6fccd06bca4f8bed778699232e3f9067f70a8d95c918feb70dfb84aa. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T05:48:45Z), 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/TCAHP2376965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1ac8940cbffea255c4df7a89f99a010ef7fbe53fef7d1e5b6aaaa9ebfbf9fe4. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/TCAIG2416161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccf711a9b5c40825cdde69be0cf44403a00d10f1e541986e142cf1997ed6e172. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/TCAIG2416167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83cce8ec5b70db9f4a22468e3d057cef622ea3138fa520e1591e93f16a9f8b46. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/TCAIG2416186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca124d82f750b59e4d7d41c6c228c66de61edc53ad140d13acacc76975e0a4ac. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/TCAIT2456562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb0d9fdad3b1cab81cbe4f99688b4cfcc6ef83831f155ec7f54a427ae775b547. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/DGA0S2487116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21046bb9f271c45809f69ded9338cb73ff4690743d56709f84bc989c42b6f8ec. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/FR2X42524746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fcf6518b1795c14315bb02db72fe77accf759c6547e20dc5109bd99a818c1ab. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/FR59R2548077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x150d8fe01d5845bee190348fd912e0c78e51aaeb33b13426764b792dd9de872e. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/FR59R2548078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8913e4c96fe36d1649542d359c0d38f646159bcef3b0382d715884031d2dccac. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/FR59R2547068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3115b68307ea6deb999b51d3e63a90ff74564a6c61ca198aaf0f6e74300d1d66. 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/FR96X2505563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab1c7dbe5238624eedccf1e2644958057e4361446f4faedd39c8239a1357a376. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/FRX202589631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22e2ff62ce7812bb616ee3c3ec8ae6f655e898321230fae88e923198a55ce7cf. 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/FRX452585991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33a2468ef1cc076d6be9b618a2bd201bb4e67fc79308a244bd288dacc416443f. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/DGA062503528.