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 0x3082cd28ddb2ef37fbb3a97a6ed2e745c7778a3f97deb65522b5820191850d48. 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/32786a33-ccc5-410d-baa8-29e74c71e0a5.json and https://artists.proofprofile.net/proofs/artist/32786a33-ccc5-410d-baa8-29e74c71e0a5.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 0x65ba096ceee7a48e8c0f64cb9693586b2f6837ce884c1b31ba3edb438abf422c. 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/BCA6L2400047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5571177a1609536797a52de034be2fd3302f00c38293c3e60685badffcd4ac94. 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/BCA6L2400039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3022334584d7e55a61ee084c3163225e63c800413f6f4134d2454dabe168ebfc. 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/BCA6L2400040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdad94a4f47aad2669d0a78bd453025eaa8ce6f99ab36cadb9d5f500d08f1eb9. 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/BCA6L2400041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b38c1ee430d5d774c2417415def9b72c5f7ed6c3eabaea1773b7a4b57d2b2b7. 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/BCA6L2400042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb42199321fe8400f052255fa9a512b06c3b0badd21469bfc1f819259dae29657. 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/BCA6L2400043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a23f6b963411cb2be76a6b12002ad33fa0a09a6851ddf42b5729f1654cc5e9a. 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/BCA6L2400044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5aaaab1381a951bd00299a7a1a96cc9b3a19a70cc0b6f5f9dab6dad9dd21e6b. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/BCA6L2400045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9509916459931e12ae5107a32fb89ccbbbe247948c55c4ff140a3013e7231c9. 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/BCA6L2400046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fe11e4c875c2f998a06d4a63dc5033d07b662cce2ce014bc697d699731e085c. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZW9L2318800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d3a0d7bcf44d674ba4868649fb04c2d91a0a2d52210db6842c0c8ad17591e80. 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/BKSAI2300084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x364863aa6bc054cfbcc501775e80c69a587871de4408016c806d8294d1ef8fe4. 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/BCA6L2300048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67c634ddfa8b58e5b444f2f7b579e7cbe3e1ae49e4a6eac47634a276a8b37d94. 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/BCA6L2400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x096bc07c002ec8bb002aeb610ec00b047607800acffe077e20c069a5f994e89d. 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/BCA6L2300060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x047674948108dfcc317712932665f080d15dbdaae333c13d7e8befd36342e2f6. 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/BCA6L2300059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x096bc07c002ec8bb002aeb610ec00b047607800acffe077e20c069a5f994e89d. 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/BCA6L2300060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcc8758ce9807da5d97dd107b9a5792bb08e6ad945ad8b9212f00df914a5ce1d. 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/BCA6L2300061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c3e6a47f2b84d2afa8817b2e83b3837fc9f16c965c623e3aec0a2faad03cc93. 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/BCA6L2300062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8091995e2b4896514892514810507cd35643ddef11904fb323670a19227f5e61. 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/BCA6L2300063.