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 0xfbe92fbb4e140df004e5889474a8394651e706ffc81d45a72decb653036678d7. 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/9eb4bb40-4bd8-466c-860b-65f107c0af56.json and https://artists.proofprofile.net/proofs/artist/9eb4bb40-4bd8-466c-860b-65f107c0af56.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 0x09ac648b68c258b4718aa5a488bcc4cf28e8a8decf30a981d2b24f1de6515b40. 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/QZNWQ2437234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a7f1053f1db90692c4148f628771fc580db81fee085451dd76cb229c3b8a098. 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/QZK6M2304576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a9e8817ee8ea54a076539be27399914695e064b3592fc92ede00acb551d3e80. 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/QZDA52485473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7267e468a7149b26973e3339b39dd6fca30b2d7fa8be944c82c9d2395597c79e. 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/QZK6K2422551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2498b15b2b741db61b89cd5fe4483f9fbf1b4d57ac32ace16ad9314b8ccc348. 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/QZMEQ2429019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8628bea818cd3a736b6949bef5b41d9ecd5164350982c4f902b60d79defc001. 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/QZPJ32294771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e79a745a247c7b155642ff6e9f4a6946716ada203d6745ed9548d6246a93620. 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/QZPJ32265595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52efe2b6d6b4ea3553d9861b272d591a647f63fc09103ae953ab6aa05127fe27. 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/KSA012199828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d7ce19f1232128871d032f50b05f5b0671265fc2964983b26beec827b01f749. 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/KSA012199829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2498b15b2b741db61b89cd5fe4483f9fbf1b4d57ac32ace16ad9314b8ccc348. 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/QZMEQ2429019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd48b315f08f4198bad09f52801f9ab396c47997576b1b23a8dd2cff2d05dda4b. 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/QZTAY2383608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95ee1fb61ed0227f3555d111a481afec1813117434595fdea07fdfeaa952afe4. 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/QZHNC2258982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36b4045682c4e8ddb0376916e80ad4d761ff1171a7560e323ba572633bbd20b0. 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/QZDA82362458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36b4045682c4e8ddb0376916e80ad4d761ff1171a7560e323ba572633bbd20b0. 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/QZDA82362458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95ee1fb61ed0227f3555d111a481afec1813117434595fdea07fdfeaa952afe4. 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/QZHNC2258982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12e8fb1f8e0b1b270f7923e512bded3af1686a7d3b27ee5e16a88cf61a6b17cc. 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/QZTB32350932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1174766cd4403d620d32e3041961a2cca81c7f5b94028f92274d33afaf8ce9e. 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/QZFZ72340840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc181a25257c38af17fc94c25171b1baba7aafe33296d51de6b48cd141f958083. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/TCJPC2439122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31042b88938136a6ad4fe1da6785516a7b829ecd39755dd542a71625dbc337c4. 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/QZNWW2576656.