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 0x7944b12a02db8f13e0427d1b35e20bd751a15035bddc09e05791d5f3f33cdb0f. 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/637539a2-21f9-46fa-bb4a-ccb61812acbc.json and https://artists.proofprofile.net/proofs/artist/637539a2-21f9-46fa-bb4a-ccb61812acbc.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 0x93ddb9068255018d4f997faa32cd214a579bac5abf73801c9ca1e73c07b4133a. 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/TCAJK2573036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf1817a4315ae1e06951475c8f6c307ebb5cb0600aa4b13c89e26ac7b117f7ff. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:44:18Z), 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/TCAFR2114510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8344ffe7b66f7468880c6e61b48767a5a3bb6df5fd71df9abd9510e395efcddc. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZFZ42257833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cfe978908b9c537d92e8f99db82d54c95c97e04de9ba49d64e769864f6377cc. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/QZFZ42257836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a99bc75479ecdfeda8ff4c5fa132f3b765a539e7559805441a52c586c1e5c9c. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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/QZRP42210048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b8e33542813c8d0a7729c8f3b5c9a7e846a803b3a2596c345759e15d9b615ca. 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/QZRP42210049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f6f2014a8f7d7752ffafb7b2410e6c72826953f00c7fb29f00388d20a302f77. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/QZHN92317127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e4cdd44dd34a4f1b0b15a49ebc06c2e44741694276548874453c0c6423a2415. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/QZHN92317128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21314d3d947c673d631a7e354ad7d691f8d0ccc69f7324496e13f46b1afaafb9. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/QZHN92317129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67ac9179479b291bf2f0b18e30894d0c2918eb2ca572c457d3776263652eb2fc. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZHN92317130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c2f5e4cd1e4dcf2da2ec6ecfd0cb9f32ad3bf96cc3501b7b1206e30cd3a83e7. 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/QZHN92317132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7337dd3e7440477431b4a156ac0d1e97bb79c87d9eee3218a32b79205e47c1b8. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/TCAIH2459576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x540b6b6fd165ffcce8d71442f9b0c1cb605afd11b43bb95f22af59445d7f2455. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/TCAIX2441378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2a462d7881332db2ff38ebcb876f3b43ff25c75a5d84c551f7c83f0b00f127f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/PLE951200965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc30cf5a54396d7f38f8966040fd0a8048e0165cd0e13d99f9856b221e96bb49. 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/GBSMU7811971.