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 0x3ac60706d8598748ad3b0d9495925ddd00684761fa495e195191102a74ad5439. 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/5f512009-4d94-4f8c-83b5-8b75812381d1.json and https://artists.proofprofile.net/proofs/artist/5f512009-4d94-4f8c-83b5-8b75812381d1.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 0x5a47423de31946d4a6daf2392d8c6cb46e415eaf991c63bfdde4473b57d130b6. 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/DKUM72200472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd893178b265c7f3cfa728ea193d58bd726658f2e04ae01554a7b06d6985c7f1. 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/DKUM72400066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8126220b80303bef013233a0a61592c44f763be587e2c4f912fafaf093c107b. 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/DKUM72400195.
Lange, Lange, Lange (Emil Lange x Område 69)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3c34457bc0e4775826849d7039bcb580c5f1934a2f06483a53ccc0a3298e9c9. 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/DK2DY2300531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4156968ffc6c5e9da4f812cb3afe5d2d0d31d1cbb2e087728e657a43fbba81a. 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/DKUM72300597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47b38ad2b284de4ca10eab15b43adfee2ad3a2deeb101e0e79af2d07351c2d75. 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/DKUM72300369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bac55d41f8bb800c3a57aa20f5d0ee6c77b65aac7fd8c2c75d684293c41298e. 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/DKUM72300222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6d9a7c324181d6474b78bfe659d9a3ee355fdb8214b066cf45cbb17729afbfb. 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/DKUM72200154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4517a1d759aaff91716f75fa2d8799bd69ca827661e237618e73b7d02ed7d187. 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/DKUM72200038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b36673dcad5a8e19c286102c409597317ecfd305024a5ea5cd4ca97ed8caa7b. 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/DKUM72100532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04b45e9d758ee701f050bc9f19c51dfb1ef93dd297f513f91b6d11ef9789fc67. 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/DKUM72100350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6de0beb493b002ce9211081b78f91387aea910967de3f615f6ec8f14e0196bb4. 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/DKUM72000444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddad323aaa2a6d1a91510627cf4093c146bcb71ca4e9161b3749fd4a0f1fc205. 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/DKUM72000112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24363cd6cc64e4928bdf0f47b65c65d3704c0103ed017fe74d90f4c12932eb68. 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/DKF991901002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8874005e530863b9c5ed954c514b623911a53ddd4bee39ee6598f8016749b240. 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/DKF991901001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6f79ac7e8834be567b9a5d029744764579c8aa6c793b469dac1a7411aebca86. 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/DKUM72400276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11b3488b121fd58c11f147e0a6d9707f9aa84e7c0014ffd35af48399cf372843. 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/DK2DY2400603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x054c2333008f079aa133e6275f402403b0edbe9a70b22ffd36f2a139d5995468. 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/DK2DY2400605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7795fcc316d9399f1124e4ee03cd968e8535814304a6561b3d3ef9520af4bbcb. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/DK2DY2400604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7253080b76bc07ba5d4c0a7106613f3b25ac6a1208934964fa018a75de66349c. 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/DK2DY2400246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53a3ae6b10c42cbc3b7606231c0d680e56557e154d7a93ce6a0483c285fdaa7d. 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/DKAZA2500123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee5e9042c7d8cd6be3c5d001d88a58e34503c34a8c77a84c421fef23aaf67ac5. 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/DKCC52500201.