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 0xeb45ef156db67ba73104ca027a8ab2db25b007d6834a3338315f2aa0685e0278. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a8e62c82-6e55-4fc7-ba52-80192a23cd47.json and https://artists.proofprofile.net/proofs/artist/a8e62c82-6e55-4fc7-ba52-80192a23cd47.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 0x368af41a1f256c729a90af464c3298e0185bf3f971eb9bae174f1b86517737ce. 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/BCD592200025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d0f96864bfdf47a591222b130e329031334a97d6ab84f24f4330ceae1cb36d9. 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/BRUM72301859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a0d1a7ccd0c6168702949f6b6d871fd8e7c3ff7014e1f04a5df8f2757f94e55. 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/BXW6U2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4de727dd3a3355e942726174bdf3cffeed26191397c61fccd400f73cc605a62a. 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/BRRGE2300519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dbb0086f1bbb3889d8ac6a2a7626c35041de9b376e169fe5748a1aba205f5f0. 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/BRRGE2300521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3451af2974c6f01f7c5ff685ff25b87b4b4110c85d1087609dd363a1ed73934. 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/BRRGE2300523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb99f3de7148ad90db0d9d085d7293165c7fbe5cc75e8809134c899159097c50b. 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/BRRGE2300525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a5bdca609e1d05105bf080c28a6b39eff371711ddc1609bb86a59fefa1a761c. 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/BRRGE2300527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x286b62bab02fc84853bd38babc0fbc1e0cabc0dadeb38f70e943f4a6ffe8aa9a. 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/BRRGE2300529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b750a07bd004e301fb73e208362b0286ff864c838ddebb022f1f14bb05b781e. 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/BRRGE2300531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22952d06ed18340a1e96f00375303815b23013b7d925ad5c360798a075dec926. 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/BRRGE2300517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeff1505ea991392b99f306d8840f34737ba34673bc905c6820ed102bcb82b3e. 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/BRRGE2300533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd48187022750609dabe74cd291d7c888b0fbc23ee3c607675238425d3eefbf56. 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/BRRGE2300535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x390363aca618526506e5164cc0170c123bbf5d0c5f9ce700468cf8148e3a3300. 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/BRRGE2300537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a94e4089e4a48ba92ff965631dd8ba5176e01c93cf480d88cf5f81c4e188cae. 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/BRRGE2300539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd66e10b35d1923176fef0a742866a7de4e6a56f960a3f6f8ba66f43c165c6726. 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/BRRGE2300541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6f646f2e633ec52218bca5ab5d575f0951fef10ac43f88bacc9eccbc3d239f3. 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/BRRGE2300545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3730deb968e8d88ff4559dcec212dffe821627db55a10e3d33baac6fc1bf028c. 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/BRRGE2400890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa402b7bd25d764103c853f9b6c73ac56761f84d48858ad737224d4900b8b9fac. 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/BRRGE2400884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ed549e49eebe03642d06a8ce0c19a798b02d9e4eb1bbb4ab77f3b3325478540. 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/BRRGE2400888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf025c331aaaf5d87386bb95e4162b798a5003ccd5c20ab6ebcd65d0929d68c39. 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/BRRGE2400886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd159a7ba0bb2a83f6a31e6a5fca396828e82dbf6a1bbbf2624b96954b229666c. 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/BRRGE2400892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7901b193ccf8a03993df75304044039ebb7a93276817f4234b3bcf63348f3941. 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/BRRGE2400914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6fc4ae92421db308b105a1bda991292e0780f77c901ad821bc8cfdde5b191a7. 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/BRRGE2400894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc60ce0c33171a4e8f4555282d0b54d34ad8049600dd606f7f9117d0b3819c8db. 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/BRRGE2400898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x962e7924acd42a9a34afd9670c0a1171b62d498f0cb1a7f517a7073d24f5b6c6. 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/BRRGE2400900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2db0e7888ec21289bcfb75a4cbcf9253ab8d4d989ff013c98e063ae92257ce6. 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/BRRGE2400902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e576ed5bdb1d96c4169360f7c88db9abc7fb3b9fe52a246d079a281c3bb57eb. 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/BRRGE2400904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50041693ad7a7474748ed9039f35027381326950b60dc69696734be8b2266d8f. 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/BRRGE2400906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8625597da47aa7be3f157e72b07dcdbc9d7d718c2b6d309e1cdc39711f123e3d. 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/BRRGE2400908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf1e36d98baf7682fea172ebed002f14ba3cc100594e17013415d13bf9df3a63. 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/BRRGE2400910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9012b58382858374beb3dace60d6f48eaab8fb09ade17b6ed28925c121fdc44. 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/BRRGE2400912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe6e7588b52360851192d4e85a2fdb293c1a280a046f59cf3d0efa32357def1b. 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/QZNMY2242347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab2a4f4fa5fa1cd5532b2af060aef5a514fc869a81f8bd933aa1169d55d83905. 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/BC2TS2300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf29195a55fcd3b8171a0bdb61e32625d05dc054988376bc07db6dbc9e741b9c. 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/BK4442400159.