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 0x956c56d0c6701fe6576685eb8ce3f4d420550f5b8c846a266f3b728a9853dc96. 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/c97c6958-dfbd-44a8-9bb9-edb40f3a441e.json and https://artists.proofprofile.net/proofs/artist/c97c6958-dfbd-44a8-9bb9-edb40f3a441e.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 0xb73bc455ae61283cd0c702e2d2bb6df1f3715d62fb9d62060ba0a83248e56f8a. 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/QZL432400019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc61f4bfd1e1d5e678a18f79a63970f090744d086ad353d59339788d32e95e18. 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/BK4DA2439851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcce09e110d4e27dc043ef75138d7e44eb9508257218e70b7dd756aabb32335c. 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/QZL432400034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e45d2350442d165e0b817780ff8dbd769b0da5ba8238ae89e242b863876606c. 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/QZL432400020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05b9a8eb1cbc7933281fa23de36a2499fe8cd16c23d1b0336adab04b82db5677. 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/QZL432400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad2c4a60690f406dda01d04c9a1fb8f607e4501a91e2ec22947d64291a90b6cf. 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/QZL432300079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad2c4a60690f406dda01d04c9a1fb8f607e4501a91e2ec22947d64291a90b6cf. 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/QZL432300079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7874420b372df2adfff394e8323e265670c9191e5ffa1aafa3ef19b520088c91. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZL432300076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e52c3d48a984434912f15aacba328977e027300644f3de5a7b41090491330d8. 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/QZL432300074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf0a764f6fa74e7f0997afb6aca83d065255c7ee7ee7c3a2524fe825363c0ec9. 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/GBLFP2330181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x252a26acce339dcdbe4b94206666c0e84830b5eeebba9cea7fbcab7ccbfa521d. 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/GX3Q92372483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd22fa3613c9e699a36cc8e329fa503e03e02e2ef91dbbba0a40399ec6d32b8d6. 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/UKXN22241891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eb802f183e242bfb8cb44d208eab96383ca1899b4f97cbb9b7a333ee68e8ef3. 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/GBLFP2289080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14c6e3518aee04d14ade99272ef359568be61ccee342fd874893bdb03627ab71. 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/UKXN22124641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6890c332f90d48914e2794b356f5e7ba844b91f48f095690cc5b208cb20cc9c. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ESA012023717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd09aabbe28308a9a4d355dc949bd0fb87650ec7a513f3a3dbd08be954fc2365. 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/QZL432400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fd6a303d05b8c3a3888e082d0d5b5ad53e4649f676799b3e989e6a36965bdf9. 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/QZL432400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c8db85b0f86bb1403cf13cd6762f700f294a884bcf999315578f22ecd422069. 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/QZL432400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7914452b0eac89cb9df15277bdf9af84f9bb22a486d72c4775bea72911aa8cbb. 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/QZL432400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c45e21661e712c55d3b08d8abd274a76fedbf67e23ef31816e591b17320673b. 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/QZL432400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28aa8834af9090b7ed3dc78d4934081b9407529de5ffa3373d2305f098da4a17. 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/QZL432400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5072934f27a2a69454e872e1ea6df0dac5aff1fc0e6a4fa24f481766c89c678f. 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/QZL432400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82afde7c3e0c2e945871b3cd2e064e71ecc2e4feafdfbb9de86c04bf382d7d12. 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/QZL432400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5506cc8d80c35b6dd67534261baa6c71664c724a631e13217242c9a50bcccaaf. 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/QZL432400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0724180a7b546c13420f7110d2a95ed9c70547c5a182c7063ba18101232cae00. 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/QZL432400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaed6bf31b376a015d9305fa9980a4c1957437a56e472b04fa21372b700dce5c. 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/QZL432400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x577b285d10aeff2b96e51c623b06c7e1a8fa32ff1a1fdfd213bfe82361e786c6. 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/QZL432400016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6de671279aa53dad77d031c14a5e94f8e559f6ff9cca62a250571783a517205f. 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/QZL432400017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d3a3a524d6f073a11f446d8c81d52f697cb9426e3638930fbdf7985241a98f9. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZL432300091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b9dfd4eabf9413283177703a6e12700b5e4a6a5ff120f3c4480423a08d3e8cd. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZL432400018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb73bc455ae61283cd0c702e2d2bb6df1f3715d62fb9d62060ba0a83248e56f8a. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZL432400019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e45d2350442d165e0b817780ff8dbd769b0da5ba8238ae89e242b863876606c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZL432400020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a82687333893183136200e726d08716a43f5bee97e944ada461b74a80906f80. 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/QZL432300058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85aef3baf01ebf029c7b1725ad8fd5dec7f5ec2b89d7a5d522b55b08af3a7937. 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/QZL432300084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6dc26a06a346d1d6ddb611b8c51719817a9f2cc64d8e3c6fa83a9a8865cb262. 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/QZL432400021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14a0811b3bbdec9c4eec687219a64ff99abda1e36e775da3631c7f55920eed94. 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/QZL432400042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8025bcf638eac667b0890190e2f5c3af90b7e070515b0fc37f14f91a40d6eaac. 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/QZL432400043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a2ba0e8549d9db98bd7f260d89612947987f5eccb2ae97ff5129b9fc50219b7. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZL432400044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74358566f13dbf36ad508dcaa70949b2215efeb201bb17a636b4af9ebf335bcf. 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/QZL432400045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89acfbdc2f6ca454b78a0b5524f1eda3d6616b08bf31cbb3c108937d4501491f. 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/QZL432400046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e4e6e62d8d382c281b1a356c7869b638e8b559f17b7c72ed4fd50f25a1fcebe. 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/QZL432400047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7347fcee5a42f3924dbe2e6c9651eae980d7ffdc8de61a78f1e6d64f73516b06. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZL432400048.