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 0x8f2d340f4cbf70bf67d38e187848ad0be8dcc8d8b19a7e674493a2974f0af4c1. 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/27ed294a-7d2d-4cc9-bdfc-6ffa448c5479.json and https://artists.proofprofile.net/proofs/artist/27ed294a-7d2d-4cc9-bdfc-6ffa448c5479.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 0x4c880b73a2adf8355840ba903bcb325964af1b5d4a651964443421218d46a839. 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/TCAES2072145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc15e12452894a4ec11939ab6fc29db16494799aa9700abed3b53a46fc472289. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TCAEF1900401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ee050c418fafa438fd0c6e5bc4b503d36b8fcf261ee2ef5fadf95a62331a807. Chain 2 (Bitcoin): anchored in block 958041 (2026-07-14T18:13:17Z), 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/TCADY1857663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2be89c9a71c3f66809be31e606bc936f0cecd838c9de4069065c1e39c6b293ed. 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/TCADX1894098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53fc45ad073b5464a9dcc90ea9c80ee144010da7491dee7ee1aaaeaabb31eda7. 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/TCADW1882073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d351ed88753291bc0772ea86e5c780a898b9daa261dbd6b864323221f81bbf0. 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/TCADO1819550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e9d57e0c2097fb41c8c5ce98a0bd6f9fe68ec410d866e65b143748db704b438. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/TCADO1824176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20a01f8808a6b55d918484e7360de589bc2c822e0b67feb971cc5e10289bbd25. 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/TCADO1823834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9c756c7396e669918425c81ef0e8e4159512c57c13bfffac9c07313728d4de4. 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/TCADL1870444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3295e61045e6c3a0e04ff53b19bf1ef83bcf016b22d88239bd90b4426b75dbfa. 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/TCADI1718400.
Skattejakten 2018 (feat. Benjamin Beats)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62ca773de010469c9bb0e84bca6f5ccacdc1b2e28cb70a2668f353e9fff1dd75. 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/TCADA1731406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2d4249b2bd47e4ec1b560f3236db140d517cfb0bd578e8f36bff34585196670. 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/TCACZ1734402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48ca5c0d0706d3410e5840ee4bd41b6703298df2ddd1c0d530c2aba7f34bca7a. 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/TCACY1790432.
Alle Skal Få (Fiction Squad 2017) [feat. Benjamin Beats]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ff70734fbc1cb059da917168d06d67128c8a3624e5ceb5bfb2a5a68edf81fb8. 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/TCACY1782078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4134224b5bb781c612b32173b8bf54b812c41c9916db697f1f0d84e7944fe1ee. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TCACW1766031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabd473d3ed61c59a8dce1d885b743d11c7b51cb19809c47bd938df06f72d6b7b. 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/NOUM71602605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5407613542268af3c1f47f4174eeda751dfd845d13679da7e375428db599ba24. 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/TCACN1618578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8cf627e6d17c7a23700ecdf231bb366db4919af9247b9d4030e630fd5990c99. 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/TCACN1625096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81840de170c788ddec10d293212f1fce97e3df491847fd08f85901b29cb77f16. Chain 2 (Bitcoin): anchored in block 960166 (2026-07-29T23:39:29Z), 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/TCACM1635716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x690b8920ed1735f2b10da660f41b678a72175fcf6166eb37640b5d9a39363676. 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/TCACL1694410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e6aee75a366dab62909e58a69bad18ef3b23771cbe23c6e5361bcb599e68f67. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/TCACE1526671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bcac57e993ce36b797b2bc969ae271ba35c8b3b509ea61952e43f7282e06d9a. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/TCACE1574508.
Grand Supreme 2015 (feat. Morgan Sulele)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ac9b87e3475d6c0a859e4e3693af000e508002450f5b2493f1e5bd2f774e0d8. 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/TCABU1420217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67338cb1fdd10e59d00c40ea9d805028ece601526911d929a69ff8fa004b8bc0. 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/TCACT1657904.