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 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 0x064f78a8c65f4a519f5e721ec5bda48c11b0c3efc8986ebb59333f75d8dd162f. 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/43d8a3ef-4094-4e48-a55c-240e1a1c517e.json and https://artists.proofprofile.net/proofs/artist/43d8a3ef-4094-4e48-a55c-240e1a1c517e.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 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 0xd2f1e1727f43523632ef8d7034f892ce1e61bde474c5c645ce196ac0cdbe88d9. 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/DKT472301008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb9e522cfc428cdc51735969081226b1e5fcf3fa9316a1053b0cfaf5bf3ffdfe. 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/DKT472301009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6784409494b4573ad64f8ad048005e93b1e4d513109bc53718b74a538da181cb. 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/DKT472103002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38a73530f225d7929f5812a139d0e7801a8d5ba19c35d9180a2a7f9b71728a29. 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/DK9M12300105.
Doin' my Drugs (Official Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe8166cb0ed3ec1879e11b2bb2194ea5cb98e3a9198af54c5001702874f8c6c2. 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/DKADG2000358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14bbaed61f3a8117376e73d3012dc21e17a39e66e7fb048caaaf7d3833bb86ca. 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/QM4TW1923626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d2e70e3a5b5860363c806622db057fc9d511fc131f68abe7b6504735e5a746b. 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/QM4TW1923633.
Luk Op, Luk I (fra DR Ramasjangs ”Luk Op, Luk I”)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1b56b4ac3eebb931e547ab54ba4b455a7c3c885e7b917c6b282e3b2f6815f95. 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/DKCA41800210.
Sukkerglad (fra DR Ramasjangs ”Luk Op, Luk I”)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x579e17ade135ef735d287db6e7d882c9f95eccbecd3d928fa9526410bdf82557. 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/DKCA41800208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x319b1779039940bda9c97bcd2aeab9e3dcc2188827faef78be2610258adc842c. 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/DK9M11600105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x040be8c67ca7c1ee58fb2e6ed6d020f10882bb9dc13348694f742284950de7dc. 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/DKUM71000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c6e009a9a98c38514cec0c48822aeaaf15ac76c875b2b03de688826f12316d6. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/DKUM71000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a4879812204b56bf07f48dbecb9f7acef4912aae1db5347a9a56fb6eb1b759f. 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/DKDV30800101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x074b8f808891b2e97c05f37e54d99d2ae6b0f605903324caad1a5dbc40e00d77. 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/DKDV30800102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d96eeccd58758f9d31c03ae40c1adffa878aa7080384ce72d5a9c3df8225c57. 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/DKDV30800103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10ff4cfc10c67aabcff1b27c1352547e9997b49e5a8c4d3c251d7154b128a234. 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/DKDV30800105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9690a50318f3d842cae6c4e6e51939bc3f0aae0a32d67580a7fd00d503f515b8. 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/DKDV30800107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf5b33dba92dfeb448941f7c07313b35dac166de49fe833c09e96144d50ca328. 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/DKDV30800109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90b56a0ddd78e666095e595f269b779bfec9474298b02766585259f2a1ccd7e8. 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/DKDV30800112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11d68f7acb9221b9733712bbd6b26c8b653d13840da081b4f11f3bed1ba1b950. 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/DKDV30600202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d8112ba8dc5ec9dedf469ee08a97898965b8b91660b686ff48d6202cf6979ea. 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/DKDV30600203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6ec80c98b0f88606723d2134fe2bfa8d38e0cb3731c1fe7fef0c36a76ca74c5. 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/DKDV30600204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1ef44ab81a80ebb0bb72e6e9d3e3092a6593bbcadb231ae9c3e47b5fb5ceb79. 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/DKDV30600205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd46baa472bc3102178d830abe1f0e017af44a533f4b459ae88c1277836f5c11. 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/DKDV30600206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88df574e4a4cc1f8a6d525d470c65712668ea63b334a53184ef1188f42da5947. 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/DKDV30600201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe72eb9d30ea1bb9aa72250e69e187ff04c754fa281ba8a900f47c727bc3cb111. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/DKDV30600208.
måske vi bare skal holde lidt med hinanden
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3acc609a21ade60684efab68c304d42949471267193c6708e4b390042785999f. 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/DK9X62100201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe910622c8f372c96b9fe5beb4c45d308cfb62d39cdcdadc3add03966fe87d702. 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/DK9X62000501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bc7c8ec50bf47d102ef941dcfa72664e1510b9532b3d6a8dcbe9ab112ba8c8a. 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/DK9X61900201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91e06a1fa0895f13d75a725b57537413baeba32c9006f67f142a53abe3ce66ed. 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/DK9X61900301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6265320cda25fd27873b47221621448c60191ab0683f95aa8b598686c7e4294. 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/DK9X62000101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17a2f62ea0bc28c286ce27143383f7c3b9145e551917b66cce5b7f7f45fb9ee2. 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/DK9X62100102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12a8039a535bbb058a647b8a0378cf0053452c408c89d00464105381aa783cc3. 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/DK9X62000401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a43884a7e46d9aa4c24719e6dd3072fcc1432bdb2de80dd2657f5ef9521e69a. 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/QMFMF2425582.
Motor Mille På Cirkustur (feat. Motor Mille)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc33750f4a2eead10ee3c75679bca4b0a26feac3f1d312a84fd92a300be3e0b41. 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/DKCA41700302.
I Boblernes Spin (feat. Thomas Buttenschøn)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64b02a073ab7196632e5b56d121e943920461bcf5d5ffc57f9d6410d42a4e4f8. 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/DKCA41700305.
Vi Er På Vej Til Dig Julemand (feat. Bamse & Kylling)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x384cdb93e1b8aa508d21471e47691c50d626d31f2f8759e830a2bbc4e2525f4a. 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/DKCA41700306.
Hvad Har Jeg at Miste (Fra Nørrebro Teaters Forestilling ”Kunsten at Være Okay”)
Giv Mig Smilet Tilbage (feat. Thomas Buttenschøn)