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 0x31d4021dd525b28a08f11025e76ad3587f38f96924f466ea9d24e011de340e14. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cdacc091-8e68-4eb8-8e4e-0be033c7b756.json and https://artists.proofprofile.net/proofs/artist/cdacc091-8e68-4eb8-8e4e-0be033c7b756.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 0x078c4421be3c99ae8a954c757d1dce7b1b206263f857c06de16484916ed05b2e. 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/QZFZ52003468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8623082d876fe195c98f78dea53e13da26d58680222a454581f50845fae9a8f3. 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/CZA232400351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd672941598deee28781bce11e50ff44eb97c6c723d34a060b1551e1586b75b4f. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/CZA232400354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e3575a6038d45e4e97a4618e4a52eee074b516259c649b0028cf898f70a5947. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/CZA232400356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb287c1189ae919aaecdfb745fffa6f5a0cc9eca318f179b8a0b3d1abb14d3f27. 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/CZA232400357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fa915ac721fbb97134a7747a10b517b98d99294a2a61b7f2c96348b00c04da4. 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/CZA232400363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2801d5a448c046600c8d5c8fbd3f6e277b1aabd8f26d5f4b6ff7f764c39c131. 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/CZA232200747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd039c529c23dff11ff532543d5572f0b9b2245bae405bb4ab8a7326ba92163f. 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/CZA232200748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb68916fc0c766160bec03878c6550df98104f670242f75f896d7d4d1767c05d1. 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/CZA232200750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b863f749d441e6a95e6ce10a6707b22b5f39fe88867a36cc05c0091abfcf980. 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/CZA232200753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78e86c1479d081e064787f295f413ff6e8f1a034936707ec7bf2466354e2dc27. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/CZA232200754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5f0f21055887a4578fa9f323228ef9ecca507be40f6acdeb18f57babb9a5b3b. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/CZA232200755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55703c234000a1aefc66ef2f9ae5a99a0590f8a9a53d38fb46375c6f05f34be3. 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/CZA232200756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x941ecdb67944c62982672845ebbbc97754112f311c9a18e81dab00738c508a15. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/CZA232200759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa46612a0ca112e59c50490f7d40fc59515b6145265ee63b8a96df24caf99054. 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/CZA232200568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1edf0b8773f348827b335528d83779498ea10e04e3e013b5a6fccaa1b16eab31. 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/CZA232200572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eae7a9bc08af9bb36f2bfc926eee2740f3d60db49c99db7343c4b478f67c529. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/CZA232100460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65a8c68888dc7b416cb15fe101d6ed90c64cf660ed11d9ca21fb4f07a855daef. 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/CZA232100461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e3c5346bfa8c45f5568bcf844320f580d369b968434579e47e54dca2b68c26a. 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/CZA232301220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f4dad25a057c3a299e550e1ccaeda44b982e49f8cc6f6abd61a6b41c37f6b4f. 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/CZA232301222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9f127ba7d5b8b1e9ebd9493013855648f99b57b78ae78e78a0d28aed6798637. 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/CZA232100949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0011ee4eeab79bc5b3b5abe6670c3f4de3a68cb04937cb22eb7314706159da6. 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/QZFZ42020280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00cc891fee1b1f81e71d5d0bfa6a0325a5151294aff53953fc466908c6526df1. 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/CZA232400693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcffb70dcb31418b828208cc9bbe2702b74986484cae125497dc6327e430f8898. 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/CZA232400695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cdf2a33e6dfaecc369e74d63894f44789d457b266a3a9770aba86049a4409bc. 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/CZA232300287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aa3967ebdc6fcd5d3dad5adae3b5be5a19cb846d37c3ef854f7af5b7ee84898. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/SKA012200049.