1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x45146ea95f862a4ce968b7a4e2da2cacd2587a988821764fb36fcd3a6af06b0a. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/93cc9c00-88b6-4643-baaa-2e67fcefdaf7.json and https://artists.proofprofile.net/proofs/artist/93cc9c00-88b6-4643-baaa-2e67fcefdaf7.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 → block OTSBitcoinBlock must exist at that height 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 0xd1b14b07f468524e90b0303993914c6bab45c1322370841ca82a1c07061c59e4. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZWFJ2487848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa11b9119e887a87a5f68b422bf30107fcf712744e654796668e53d096b01781. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZK6J2446843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b55c4700a924993d5ddfaad3e1c44cff8635fe8b5c38f8fd8befc22b3d5241a. 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/QZTB92296390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d0ace81ff9856fcc54498d801f54c008f963b52ac2a3b3f2dc47889c4894998. 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/QZHN82322299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3802610a316312d651cea2ff720d3e01294211a828d949ab38a3829809cc085. 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/QZTB22318855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bc1bd5dbff17223766738d99a57df24ff13d70118f8c1c9b3c1d90160538f8e. 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/QZWFM2385052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x182e8f25837d602d7df31d242f63e5b7239e0301a7a86de7114598b88a28213e. 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/QZES72371950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cdfc57684dcbc1666fec779123dfcecc80fabf359ca7bc04cbdadc2cba58849. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/QZNWS2384802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e80172fe1c9714c74c3461429d358a0d7b9fd277dafef51cb57cb023f1fd1f5. 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/QZES72475399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82ecccfb20c88992fd45eced6fd9da86639d704f3711665b89fb559258072401. 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/QZWFF2332088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08c97e18eed42451fae90af4603d0ff3d1c7ddc88ae4e12cc7d77430e5065c97. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZMEM2319533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d62a5742b08dc40db56a6e42ea379214a3d39835c5d4f9e53605705c1443cd0. 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/QZES72286236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4b366ed1711cdcad5065b75e339eb9855a94f592c6ac3aec9aa22d935b1cdc7. 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/QZES72283622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc34c8509d82da098a4428db5da4be86f34ba53439afa9f162567ed6819b57d74. 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/QZHN32216691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6a1593e6a082bcc217ad24c7b06694b0dabe59bb5f16528a88b20a12d16766e. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZHN92200696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49a48868adc15b927ebb310deb0ba479b8133def08f0c8bfa0dbe43d00f934bf. 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/QZK6P2295797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3fc1b64226ed4768897b9d2f6f0bb893c7da402c2be5dd73adcd65f6a94b44f. 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/QZMEN2219450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3b0b5470d4585d8bcfebfe64f0d182e881a30e84a8cf87ad3fca8016b7369ad. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZMER2291232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8092331203f1ba10fe0e3345205b43db8d6cf6cbce2a6f4556bc7d1dbf0d30ff. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZK6P2202983.