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 0xeb3dbd4b3d57962f85d1f11f758cb288f77f14d89ec3a26e0efd51a5971db7ff. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3970c196-7b0f-4453-a560-597021bd40a1.json and https://artists.proofprofile.net/proofs/artist/3970c196-7b0f-4453-a560-597021bd40a1.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 0x5babadb9f24a27e9b47ca3fc2c4e373bc1705582f784c6938a81307aa88238d6. 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/GBLFP2571987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dbb7127e925af7076f1eb5a6139d8ca146b91a0ae8655d83a71091eddea28d1. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T05:51:54Z), 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/GBLFP2571988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7511c3060c4ece76547be9dedf950b55f1c7b95d272f102f5f80d1f7e8873e76. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:20:53Z), 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/GBLFP2571989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dd645e27c993e9530cf9b63484f8b4a9591a8bcfbbe3526b1433bb470c8ab5c. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:25:02Z), 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/GBLFP2571990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae952b5e11818cce768c29b2d229559e4aea44c5643e2054bf79e43a9f199cf2. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T15:10:00Z), 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/GBLFP2571991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c28a2fec497463ecb13d3bce61a19475db4f422066adae04a08ac52dd35dd4a. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/GXH2J2563328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x248b00baafbaaf30a5e0da09f6413b04a3f332db414d0520526661f8c63d5679. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/GXH2J2563329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa91546f826b2be573719a146e80ca3e4556f21eae651c8157d9060703a0c1369. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T06:31:53Z), 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/GXH2J2563330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6999372675cbd7d762dae1aebadb1107b36edc748ec88d05e248c2c7e05c608e. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/GXH2J2563331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdc3d04b6bd173ad9ddb13d5399ed71800558a7c9b8de9cbd7ceb2687a570e09. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:23:52Z), 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/GXH2J2563341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8435b6ef589f79a8d26d70809441d316dcf810d57866f0ef694f9b56aedb8c98. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:21:16Z), 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/GXH2J2563332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfa9067fefb7077d083b72fc9d6370aeb47371a45ea774326ec501d8a71559f1. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GXH2J2563333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf54a65cf749dc1a349b686b6f8983e05bb71867e8f06f48929ebbbc7e6716c6b. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/GXH2J2563334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x385c353103aa1768726a50571de51ab2a7d4df579af2373a389c6dc29df4b616. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:42:26Z), 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/GXH2J2563335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f4dc46e9f5e3c654e95411f4d4e7b89a2cfee838c1cb42d8da8211827842166. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:46:45Z), 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/GXH2J2563336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd60ca272d1198c325c1c2cf5274f3094854d5afe94f3d6bc4c14c2746e1ea4d. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:20:54Z), 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/GXH2J2563337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x534be5649cfa5831341ac5c670aad322ef605f808e0d7cc480d3da0de3cc67e2. 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/GXH2J2563339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd35bfbe4f678392b1789a1d622e3816e3430ca8751a279228db0b61389d1639. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:52:40Z), 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/GXH2J2563338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a94a0ebece3d9c03d052afcb45022cee8e9a6eaa64fedfe00a99e23fab034bc. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:35:26Z), 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/GXH2J2563342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fdd78a2e2b834b5d868f5e7581c59962c43eeaefa8cb6b000d9f44e7f485f2c. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/GXH2J2563340.