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 0xdd3d0415f6678f6e8eca68dc4129f8ab878ab10ae3b8d2f3ddb5fb3ce5d48d4c. 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/ac417913-2f96-4ae3-a80f-b7cf3961e090.json and https://artists.proofprofile.net/proofs/artist/ac417913-2f96-4ae3-a80f-b7cf3961e090.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 0x062fdc09437311bdd5313363d719e89fc3b939fec9c99e20b1f5a8121af12323. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/QZHNA2446402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7631c1d696e977ea6cbf76ab9ca4100b3537bc72aa35b9794a789f89dbb7cc7. 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/USANG2498870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x709dbc77604ba093d5f30f76236a1ba501923b835da87ee638a8732e806493aa. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/QMFME2440646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2981d2ecc26e4a2a7cc54031243154e1b4f435df6db4c5824e216c512d1f86a8. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:35:04Z), 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/QM3DF2418551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04eecd5eb16dcd4c49523f4916829013760e68558d8d0bb7fa2f564543c84d76. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/US3DF2505516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2da5b66824a44d4919b44382ba23c6944407100322b9d1858cfed9490a13f87. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/US3DF2507922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe621a7bdad301393510fbde0b51fd9b9e514dee4a8d0c7ee78628cf4aaa90b3f. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T16:37:16Z), 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/US3DF2511774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a8bb81452a1e31a617f9acf2492c331fac974c74701cd5dc67ed2ac3402acda. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/US3DF2511771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98ab99dbfc3d8358d80b30588194c6633ccc2a37b3ba57de15d3cb92ceadc763. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/USUYG1719353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb22c766ab0e002dcef457f5b351cadbd3873af43dc7b37a86a3a3b3cab2620b. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/AUMEV2543682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87a6891a462986193fd969730bde8cb8827ae0e12902db263c83e68e21feee13. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/CA5KR2532006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04ea4139f1f0573649e7308825c3ae8bd906784a9f52ec0fb3a8565a480d151a. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:39:12Z), 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/US3DF2585594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90820c381a9347e4c369ad3fc85c1ab56a401e5eaf3752a91a6280b1935cd0f0. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USANG2502816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x773157c0b1d61df185adc6c3b7acb8aa9600d8e9a0e1e89d07a13dbaf79cd22d. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USANG2507809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13dad5a96e59d5135a21b1531bee99c989de7b87b5e0ac781470e857e645a510. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USANG2516959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71768eb035da1a8a990cf3d375b0a767fb10b1fb6d294a44a97122843a66ce81. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USANG2516957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2506a20b895740c4bd2408e8d3d2545c2cce449b7ecce3bfe9174f041325afe. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USANG2516958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8915f2b4e44765fee97f5f4242175ac293c4ccac108442684e7f99f53877845a. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/AUGBT2544422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8b05556dcaf1b6aada205f1d85690a33053f5e95a720f8aeead4582e6bc07ba. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZZ7R2573391.