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 0x59df5451d6506760469d8b0a244f7648f103bb3ebd293255a5ed27f73979b85c. 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/84828216-e7fc-4c91-86ee-b4b9caaf01ca.json and https://artists.proofprofile.net/proofs/artist/84828216-e7fc-4c91-86ee-b4b9caaf01ca.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 0x3e14197e9c43c299da9021b5ad0d4910b6edf7328e4469557dd9b7cc005452e2. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GB8XC1095672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x023a48712886883b7f67cbd8edf765a4f4427597bb53c0da3d44b3950b5b79e1. 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/GB8XC1095682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0b373c9917bdfaa7d706247c7841c0bc95f729025640b417892649dcf53e522. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GB8XC1095701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x337c4cd76475a8d964b59c4ffbf716b33869c531ca04efdd70b75b39dfc7eb3a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USFI86300601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf131592696cc728249bffe00a35d75477d01b349cc56762c4f4b6d8d3e41219e. 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/USFI86300603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bf056b32ae6fe01cde866fb1ac09482c9c768fc6693e6894f0babc246faa7f0. 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/USFI86100657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89f8a0984e3caf8d8d22590a2b5068996780a2d79117c5e3e2ee561d43d966bb. 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/USFI86100658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b4fe4f482b35a64573b94f2c98c1d522beeb58d8de6dcf9e50ebd32337a12e9. 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/USFI86100659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d0ae207063b9ac00f4c47af2f37cbd131c7c57a764e665faf5309854725a397. 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/USFI86100660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6e88067368ef5786829f5afb0fa275f3b6c38a1fd2e966ba80ca3089b76a40e. 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/USFI88900152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeec54c8aaabbe594a8c23cd6cce76c30dbc3801674efed6f9b1785d0fc820b8. 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/USFI88900153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7e5d1448eae0f0224eab2453433939338441ff7a42f8e02eb80e4f27601ea32. 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/USFI86100661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3533c5a562d9bf48119394065430235ab4d227c6eabfd8d1bad16a1fba650ee. 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/USFI86100662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x757859752816a8bd0317e0696b43831a8c0af88253d008ce6e7fe2770c3c2be6. 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/USFI86100663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e2243abc428dbc2d3364327a194b2483c22a0df4acf34f5a748a5d0979b7604. 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/USFI86100664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6442339306d763229c142968102ea0cabe1fc3adee778a4ed6ee04f00157aed. 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/USFI87000140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb053506614c78d20c7142152967a0768a8fdb65e6d1732ffcdfc46dfc8d3abf4. 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/USFI87000141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dbf5da577fcf6fdcc5925b949c12150fde5fb6c806b70ce9168aa195ecbb4ef. 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/USFI87000144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3fc233272080848b7df247d67bd0821ab2aaa3fd893551a5fe6cb357e2d5dde. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USFI87000146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca09cc2d0b5a82267b0627e22920cd417a0b44066094155e245a573a2468aec4. 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/USFI86101570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc4fcd4e5943d2c0f18628fd29f73bfbfad5b6ece41b6732f975bb328d744aa5. 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/USFI86101571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4df34f68556623234270931c0214d3870007f2a5be63bcd036c656ccc474fe99. 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/USFI86101572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74f8d862f35c2851c1c261851df394f528eedcac22cf520239a9103f636e3b19. 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/USFI86101573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98233451af4f76d89a005a0a69fcfb4c90980da74fa79ae69d7bd5355d1cebdf. 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/USFI86101574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6b6370a5a917c8ae88c4d0d1e28ef3ac92f2c5a89ea3039e172bdeb8fe8c7f2. 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/USFI86101575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdde350d0b396cfcaeef61c78205bf90be9f64dcf0ffc3cf715c9bb1b8ecdc702. 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/USFI86101576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03ba6819f65c1ed8514c828b48461fb9bda5336482419ef7cc2ce92237ac8607. 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/USFI86101577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6190bce340b36386c2d48fb9f3bcea24e3a242e69e2288f9dfe7dabe41f0e305. 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/USFI86000025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddea229fb0c6c37611053275dc2e0eb099474bca44892707f3ab85e86b4437d5. 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/USFI86000029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98233451af4f76d89a005a0a69fcfb4c90980da74fa79ae69d7bd5355d1cebdf. 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/USFI86101574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03ba6819f65c1ed8514c828b48461fb9bda5336482419ef7cc2ce92237ac8607. 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/USFI86101577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54dec30e69ac3d6e982103ffb143fe2d38b23f25de6d7090ae729e2226d2af33. 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/USFI86000024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bf056b32ae6fe01cde866fb1ac09482c9c768fc6693e6894f0babc246faa7f0. 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/USFI86100657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c5c2e789f68ef0be158056409dc038fc6bfabd7bec9d16d66a018f2bc6d4d0d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USFI86001121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf131592696cc728249bffe00a35d75477d01b349cc56762c4f4b6d8d3e41219e. 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/USFI86300603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6e88067368ef5786829f5afb0fa275f3b6c38a1fd2e966ba80ca3089b76a40e. 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/USFI88900152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6442339306d763229c142968102ea0cabe1fc3adee778a4ed6ee04f00157aed. 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/USFI87000140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18f3ee431201a60c0ba30b170a721fb6e919c81d5522a8232fe8cbd11239a53c. 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/USWB19400177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c03180d9a711f4876f036cfda4e335e68b6170f32e8bb7e0a56be6271bbc791. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/USUM71204065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aa7e0645f2f3896bd7b5d7e28df28ae3110a44276919b08acf9f2c56179bb8c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USXTN1099901.