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 0x547794594b15895ba85b87b96180862b3977025ec64ee94b8c30f42e01483c69. 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/d7d137d8-b0aa-48eb-9045-0497ecf8a99c.json and https://artists.proofprofile.net/proofs/artist/d7d137d8-b0aa-48eb-9045-0497ecf8a99c.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 0xc27d6d8511dc138b005a445eff84202151574c558f0b2b95d082dfdc61c0c9c7. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/USCGJ2181713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e6f39d94e828194e4f4e92b61f0928751875ad84688fa293b7d5f529434a907. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/USL4R2118480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ba5a5090543a87eb63eee89d993377a8a959372836545b6faeb20aaa5ada6db. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:22:53Z), 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/USDY42211735.
Cumbia en Fa (Electrocumbia Instrumental)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fab3da2cf288a41fdc846479c52f23e56da7495c43698affdfaba5d418e6b96. 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/USHM22261977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92d23f029bdc8673b248fe6153c90aeac44528d28582c8dfbf9eafa666642c76. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:47:53Z), 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/USL4Q2202926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac04ad19b2e3f288b413c6087303cfed6a2ed40b672dfffea378573ac7d1ad1a. Chain 2 (Bitcoin): anchored in block 959109 (2026-07-22T09:52:30Z), 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/USL4R2232667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcac5e994d205c4b1f9729deeb748d1fd0027f423fbb48ee70e47d3090e85ff38. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/USDY42323887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe27266f8bc802e7fcb77f9ee24b1790d44c068dc85c4c6390af2a9de67004963. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/USMH92362183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdddacc677a6acfceb585260fb9592e66fa9d76bd267890b351c063e84c35a6a2. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USL4Q2354344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x803e1036ca7066d8f491629ba2ce0a55588982a0ce96d96485cd9cddeb8e2cab. 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/USL4R2376519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa055ef015603e399afe84c4b17434f32615884f56148a9443539e12d15935eac. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:43:17Z), 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/USCGH2496423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b21eb1e1402eaa23ee7ccf137621bbdc797cf446087c0e98e73444179596722. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/USCGJ2473528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62aa6f97e7f8d796a52120cc8045b186782d4582e1e5d1021e7293b872936e4c. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USDY42445056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf552fbfc479e922929edebb33efa9e0b14d2ab949b10492ca729737bed18825. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/USHM22412541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88e8d11cd09dc6c9389082e4fb80c5a82e1f93a8b1a7501a6efe81ad8fc579c0. Chain 2 (Bitcoin): anchored in block 956430 (2026-07-03T02:22:42Z), 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/USL4Q2430646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5665dcb2d2f9bd9aad57a812c46521375ca7ba46183c93e01e757a1bc54ce7bd. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USY242451183.