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 0x31456c6c69d34581496289f19d2318ca7ecf44953014ceb0b83c2d91c389c31f. 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/368dafb5-d6a4-413f-84cc-b3930e120a99.json and https://artists.proofprofile.net/proofs/artist/368dafb5-d6a4-413f-84cc-b3930e120a99.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 0xc753cd89261513b750f97e457ba64df29d77594b0656add00c6d0eb5c0a0239c. 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/QZK6F2236005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb2da34ee216cac5fecd2e3cd35a7dbdf8cf6a1bfdccf627e599e632976829c2. 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/QZK6F2236006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x744741a3bee23cbf0cafa3d1682396a4bf55f535fa8a55b32cfc9b6353b1e745. 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/QZES52287314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9d1daab74b7ce14bcb1a95f62f1eb94a901ffa52a388462be5b65410e94ff40. 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/QZNWS2191419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1f6fa41b70eb33e0e1bfb0236d30340e141d38622e82c9c645aa9c3d51323c0. 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/QZK6F2236007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2432ec6fc5fdbc4072221d2976691373b31a432de846728a993d10aee99d6e92. 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/QZK6F2236008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2c24c22468b956840a12d01bc9007c051c0508d3dc16a7cb96217621a4572a7. 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/QZK6F2236009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3055f326db665325ddfbabaefc91d40967df7b368857ed2b4ce1f38d52a2509. 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/QZB4J1811804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddfdd1d0f3b3cc5578fd71adf6fb6dc017d94e3b60ad6ddce3153d7f9dcb420d. 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/QZB4J1811805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32e13af857758a353f4cdbd63afa46ce2abb1580b2c0bdaa9c8588b4028146b3. 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/QZB4J1811806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e9ff634b8806ff9fc34f5321114cbfa98191ea45e769c9c5decd55f97426530. 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/QZB4J1811807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0800d8252f011fe6678d63039cca2e36b3a441f308400bb34a09864ea2eda655. 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/QZB4J1811808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfa5b4e3028d5dd43750bd8a624680abae06d563e052e2ecf34f3b273395a2ee. 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/QZB4J1811809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e92a985ebecbd9c343f3e49448cf8324febb169fd0eed17fff60e7e311f9e6e. 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/QZB4J1811810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbdd463e9ca5992a0002a8643bd6bc84f7e469063ffda95bac631c5011c79e8c. 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/QZB4J1811811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa169531559355d64596b59b550f56333c619993f8e5f4787a0db9d86a535d07d. 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/QZB4J1811812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fcfd00843a49d322dc3b2a22dbd31b7e2fb2eaa02870ce87d52a6a703c832aa. 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/QZB4J1811813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc2a01ad743531d1db06d3e318f40ed448216f09ce9e10c218196af447d1a708. 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/QZ4JJ1614866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39db21405b86e572bf56d3d1a75721b5804d8f9ccb2fb06e137d72b2428a0f5a. 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/QZ4JJ1614867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffb830bcd0ab8cec8c5ffdd89ad0f83dd7b249496b640fc454474f000b4d539e. 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/QZ4JJ1614868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a2b9a03de31304b0e9ed42f4b17a20f62c8b55a51f159291a165f033989f99c. 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/QZ4JJ1614869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e5431c15e4000ecfabae33c939d9071d0310e134ab53cdde01baa742ecc16d2. 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/QZ4JJ1614870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafd717700a78e0b4fc1913b1a41b2a3e551b8489e59c768fe17d92ee4acb8a28. 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/QZ4JJ1614871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ba0f72d134a7e7811a315c2fbc97e073742c3bae9e534bf5bbbfc7548b5aebf. 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/QZ4JJ1614872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x744741a3bee23cbf0cafa3d1682396a4bf55f535fa8a55b32cfc9b6353b1e745. 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/QZES52287314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9d1daab74b7ce14bcb1a95f62f1eb94a901ffa52a388462be5b65410e94ff40. 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/QZNWS2191419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f6a054795b05a7a21eb53722884dfd01223c6d477a183c3c02a2a621e388142. 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/QZHNB1927142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad43bab6fe075fb87fa13ee78ca05d867a5b9b54778aeba8ee1dcfe6515b7f0b. 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/QM4DW1874681.