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 0x5b2230bed6c8b6cc33f5c64ddc83d00e64469e98544530fd99e7ef7d50df8904. Chain 2 (Bitcoin): anchored in block 953621 (2026-06-14T09:42:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1e82560b-2ff8-4aac-968e-11a0359d2461.json and https://artists.proofprofile.net/proofs/artist/1e82560b-2ff8-4aac-968e-11a0359d2461.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 0x0cdc48735fc8ce68044da032e9bdc4977bfda1da79915f1ef5078f5379ea6ae8. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/AUGBT2360748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7655fd1fa8ff277f3f4d6cc6e93579778de89c12dd2130f6c0b6c49626e81701. 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/USLZJ2367556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09d5b8cbd9f6436e708325430feeffbe79e2d29303b363ae4a30b7134e6c45ca. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USLZJ2373610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa93e47c0fd7af02e49efb147b9911c8c99067ecbdccea6ca681354d504fcef87. 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/USLZJ2373605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fb63a6adb4cabf5e871b774e264265be2e5a4ca159f7659aa696b4d40b5db10. 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/USLZJ2373608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabb8eec8fde0d50fa382ad7f4efb587f60f8170957af2338925217dfd84b3dc3. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/QZFZ42188874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc80447d121b44ae4ac694145472a9ad8f9f2c2bbd4217dd44f5320d839f12634. 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/QZFZ52031383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a909747d5de9e7060c952207bc5b99891ef67a82e3af3790184116b2ae57e37. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/QZFZ42188876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba17ffd4c1c5f04a13c8eb8e51f4d84391592c3b5cc558b4beb8aa36ec90fddc. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/QZFZ42188877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3c3fe8107c5a8e6b85745e1fb36240e262580aba737158034b882c22ab28290. 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/QZFZ42188878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00b729b62526f724438ced122c6fb6cfe39124eb2ca2299d9b1593aadbeaf988. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZMEP2005695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabf0d2cde93bf00552d1a95031b6ce3958d2ac640e44485f8848f6ce066708a1. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/AUMEV2385503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa93e47c0fd7af02e49efb147b9911c8c99067ecbdccea6ca681354d504fcef87. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USLZJ2373605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7655fd1fa8ff277f3f4d6cc6e93579778de89c12dd2130f6c0b6c49626e81701. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USLZJ2367556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0848b080d5afc124d18ec9eebd8262d7be021645ee969e806723530cc621cdea. 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/QZWDD2241116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10ffeaa0b7d4ddad31fe0bd8702e195c3b606cf77684fede8e605eefd5045e3a. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/QZFZ72282561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5198ad76831b28267a4d00e47314405304ea3305ef0a72e2f2cbbe65dfdf6a24. 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/SE5BU2205776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6748e9b7090f6126276bda30ea58ae081608d18ea339a62262142fff40743e98. 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/QZMER2127861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20667223a4f795b6f0435df288581ae161ed42e21dba760d3a87777b973fc3bf. 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/USCGH2123358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00b729b62526f724438ced122c6fb6cfe39124eb2ca2299d9b1593aadbeaf988. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZMEP2005695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf03eab53a3ac87e4afcd3a7228f3574b2df3c9cf0cfc0a2f1eed6dc9c3871c37. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZHNB1914067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcb5195c3a27ed04f5a9eb98d1f3433267aeb4dba4d74b2d7fc8bbb14f9835b3. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZHNB1914069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x220b45f0bdf1401ab8f7c332d24b69a04935b331140c04a6fa811ffe4d893ce1. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TCAFN2104564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x463de7d3ad068eaaf6d972e662df4372a15646d5065c40c09f252631ae4a768a. 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/TCAEN1962875.