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 0x1903f40be3e888c75f8320f091fccd90954927c61ce3794405f8faeb91fcf058. 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/e37db5d7-204b-4a56-ad48-5babbb45844b.json and https://artists.proofprofile.net/proofs/artist/e37db5d7-204b-4a56-ad48-5babbb45844b.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 0x761007c42292a3b62f0279ca8745f676afce1ebdbddbd2dfda30d769a9cda9df. 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/INS172400826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47f751ab5273e5aff14f1566ce792b9e4dbb5020796a0bbf0a00f33bf970ec2b. 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/INS172400827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb5c7852b4c6ce6dc1613ab0912af27c38110ab42209639400ec0137e966f1b9. 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/INS172222227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8011c135765165226fd741494a90190eda8f2902dbaf2ab9ef9bea06d21ba74. 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/INS172222225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ff7b3f2e8767bfc150dbe266eb257cbe5f47e04fcca7b9bd4cce8979d8bb4c7. 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/INS172221658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6ecd2a1aeac74dbd465a6c5c687578f8612331c6c58e9892f666a0cdcf99b72. 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/TCAIM2492869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d05213ddc47345e2edab2f9354463d1fba2c6f0720e631de88a8892522d106c. 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/TCAIJ2447159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b35ce9e270688bb8e8523058b402e82ff296bf67b953b2045c7f0ea06c14735. 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/TCAIG2479124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a38135799bb6716183dba1f59348d5b5f602883420475be8482be0bf07f9026. 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/TCAHW2476516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30f1625dfeb8d1597db9b9fde69e97c049ec761c8300e5379a1dcafbca47cf9f. 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/TCAHU2429357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0945fdc0677be414fc7d76c6bed344445aad029a2ec3da2e01fc6ea1f80ed1a1. 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/TCAHT2438394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x942bcc6969ccf41955b2027d54493d0f776efce05486e481f3e5cc6eb4ca020a. 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/TCAHS2342516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81826f33748bcdf0f7aac80a8c0763fc25440c1c73b061e813a2eac08228f1b5. 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/TCAHP2352409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb398df7eaf0d2dd85fcaa41c651728c1323b9e894b32e3baaf09cac90132291d. 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/TCAHO2356842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23d1ceb18ac5ab24171cda24c503a076679c31e7579c7eeb816715586d1cac62. 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/TCAHL2385444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d2e24185b5045d9d11e607390d941f479fe9637a91cdc39a7c82c14469b7cf6. 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/TCAHK2396931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbb1db8db5db55d45d1926813f3da6147455ec86536867f632d5087cc6071f3e. 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/TCAHA2362653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72e5a3d01ff43a74c7ecd3237d98c8f95d7a1b0ce058e29d3236eb29833a6555. 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/TCAHA2324505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f49e6a7ca088a9e3df88eb743dde972254b83d19dddcebbd64f7b09bc60bcb6. 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/TCAGY2306439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29475613115047f373824e19b045c58bc4d36a2bfa7e29c51733ab6aeb7818a8. 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/INS172223873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25fcf92678865f2af7f292e16545c46fe7d169de924e10f68694e6ef17637edd. 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/QZTAT2262325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcefa42689f30e51194aac2a6efe53675aa4b011b2ca06705e23eefb1fdb9fd76. 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/QZTAT2262326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde71ee5b2a72f5c655df74db4c8d73f2a731dd9fa2b50ab583f0492ff3d7fa04. 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/QZTAT2262327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19b7b43214dabdf437173d0cb02d6484aea6904a57098175f5cff5d7a99433ce. 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/TCAGL2253226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1fc8e087568a23d9fd7a2ccf741fc2239f3b75004483688299a3ca19281c956. 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/TCAGJ2239903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48c78d8c276463de683695d1e4f26b4413548d69e59c43722d5e696d8dcb4aee. 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/TCAGG2289597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9eefa3728f9d3a5bf7230fd3e1b59af561d0eae5671ae79081a421a5c8cd821. 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/TCAGG2258637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb81de8ae146ba3293497aa4028b9aa9269b8c2ae1dd763362a41524d7dac9319. 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/TCAGG2232219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56397097d6f419731782c8ca9f8ca785f43634876574a72e4dfc64193d70ac05. 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/INS172224135.