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 0xb84024bb386b109c66bd267b11669db73963cfc47afb39d227faef826edfcb3a. 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/0702b395-39a6-402b-8a2d-5b9fcdf060f4.json and https://artists.proofprofile.net/proofs/artist/0702b395-39a6-402b-8a2d-5b9fcdf060f4.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 0xaf162d3bb9be9296010fd2e84b979ecf6e906d3d0b2323b6551be7cc63d21e1f. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/GBNRN1890200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83f0725628b20d056b9d0cba1e5b6a84348c02bf750e858e5b72de3f5c6e379c. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/FR6V82384321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf752ce572e02cbd6a645886134db51c6cfa1435851af3fb3808f932b8af6cd47. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/FR6V82384322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x053354a4e021a8b3a13efc47693dd1bea0c1d0ae0be21fb3d60b6ba9c710ec8d. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:03:09Z), 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/GBNRN1791378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58ec255b875dad4a28c9de2aebfdc99b9dc2503473cc7022d499d2ec8248ac99. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/GBNRN0604801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f50e5623088cb386fd2da263943b5ed73b1f9d88b494b1d900146e9cc6603dd. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/GBNRN0603503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e8836879d6bf2ed373d93e77b6aff969711a18c1a0c1e470ef7c147df373f9f. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/GBNRN1791383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb486b3775d2dc71cad21c2c40eefad795079ab2038092bdfe20e0bce0674550e. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/GBNRN1791384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x053354a4e021a8b3a13efc47693dd1bea0c1d0ae0be21fb3d60b6ba9c710ec8d. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/GBNRN1791378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x222af6e0e5c39037bae8557039a7746247662115c0613a4cabcb0a67a8b07e13. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/GBNRN0604806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3ee69d2399050f4d032b8e6c55c36e29c007d10e083fd3e86eb96b15afe5ba7. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/GBNRN1791380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58ec255b875dad4a28c9de2aebfdc99b9dc2503473cc7022d499d2ec8248ac99. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/GBNRN0604801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f50e5623088cb386fd2da263943b5ed73b1f9d88b494b1d900146e9cc6603dd. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T11:03:35Z), 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/GBNRN0603503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb486b3775d2dc71cad21c2c40eefad795079ab2038092bdfe20e0bce0674550e. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/GBNRN1791384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef22698118ba23c61536e540eb78a13edb0f13cd30b9412648c9af8fb330db51. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FR6V82385208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2c5f916746c1fd05ee3b321419b380d850052acd31ae5d3f5f75cf800263303. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/FR6V82385209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4af12dc30c8dbeea3eb6c94c89a6a0f904d019082457ed9a47e20600c883b923. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/FR6V82385210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9af541af76af1eaf8cc8501b5351fa1420fde8db3da476434ac48da56c1defe6. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FR6V82385215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e9bef32500195a9dc110f15e7ca8f6a61d3b9fb59e46523264f7a9dcb017a34. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:30:40Z), 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/DGA0R2483506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2abe2baa754efa7a7eaeec34249b7d0015443b3f103ad883a5cb345fabfc51e0. 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/QMDA71324314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd23e84e9773c08868e9f7d28275a25c8258f2dc4d6f43630234da5ff7b54a1a5. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QMDA71324315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x163e1fe42a921e09dae0cab3636c3866baccb8e5623cb9d1d6a5f2e85b128338. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QMDA71324316.