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 0xd70bf37cdd62f103f0e4eb0781a355b1ccd12a961709d2e2ca786e28cc03b332. 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/161f4133-27b3-4da5-8a7c-d406133cd739.json and https://artists.proofprofile.net/proofs/artist/161f4133-27b3-4da5-8a7c-d406133cd739.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 0x3fdb597a940af83b12da58a768ae242ccc2ab53835c4f21cc39afa94f9a6d341. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:01:35Z), 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/QZMER2334190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe79565949dd144bbd918081548cf9e8a0e0491261d7e815ad3dbde57f7f2921d. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZMER2334191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8b1099ce620fd8c669e03736fe7e299678bec26f5f693f8ff39fb108272a926. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZMER2334193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb92f482a218ddbf8700ece40e451e0d8de430dda990eebc9bfdf35b9fb29348. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QZNWV2375362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa815ef2c1619e6281ab41e388f77fadede5602684dc11cedd72aaa3894a7a96c. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/QZHN72462278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa79b64a6147d2506ca20845ad686981de2b53d92db28d2a5aafc021069c447ae. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZMEN2494064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ee4380af6ef74b5fb75e65f3be9be829f08a468f077f0e4205eae243b04e255. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:30:09Z), 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/QZNWZ2425779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb1f6272efd604efa44d96cbeba3268e37b10991b53e27e516b5637926daa03d. 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/QZNWZ2425780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90e4a4e0d926f8dc2c0ffe95cb8c34426c3fc10e0b6ebaf35ab148b704b7bd41. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZTB42486043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfad21b5b340bd72dccb2d7cbbd0e929ee3c9afcca78ab70eda8a335036e8c8a4. 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/QZTB52487822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc97a4c4194a349e30298eb8279ca3d1071c2e3eac6569ec5e1c31adfeea5aa3d. 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/QZTB52487823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ae7cbdd453251ba414fb1f494a8cafad28260757ad0e7c42dfdb634ccd77389. 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/QZTB52487824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe34c88dacb36f8ef1e891bb7067a1374de6afed55f422d80f5b39400e7bf4e7f. 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/QZTB52487826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x514a59f412d13f3ee1ae532bc8b456877f9b8dfafe66d353cd9f2a0e2eb19d93. 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/QZTB52487827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90e4a4e0d926f8dc2c0ffe95cb8c34426c3fc10e0b6ebaf35ab148b704b7bd41. 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/QZTB42486043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae38cf3d35c24ca63a4c112df9ec9b7908c9238c20e791ff50042bc76cd0068a. 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/QZTB52487829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c5740c76308a210a217f74c131fda51a5ceafefeb2e6ae6f6223748071bbf40. 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/QZTB52487830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf225c4caf0da47c8213d6e20888afb335fbd338f9b7202279dee646fd1d7d022. 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/QZTB52487831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1c01b8d557ca553575cac013f84055fd26f3f5bddf9309a48579464dcfa486f. 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/QZTB52487832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb9d40c7a8c46354f4b35d0e9ee498c47246388fdbc7bb3c31f91b97a69c1532. 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/QZTB52487834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09f58a3ebc69b565abcbd7cf90a5786cdb89374620cc8d0b93629448fff2d3c3. 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/QZTB52487837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b6e4cde441dffc0b6966426068b38d22f2662157faed68b39c3ba8c026b828b. 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/QZTB52487838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe21e84a6fea852b33eddddb723dd0ae323f0082b5c99c3bbe0ced5f879144db4. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T09:55:08Z), 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/QZFZ22502787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53549096bd501f9123ca301116de4f45aff2d969820e0822e82034052387335d. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/QZFZ22502788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5ef9344f4d5f0d11f87f190b1b382976c73e3da616db584ff56d7c35b3dfdfc. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:19:07Z), 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/QZTB52591243.