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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf31abcc492d3351ef90f7a52744a8ca73531441b79c241a49357b70d08dc2f17. 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/e68303a0-dd8e-4996-87da-aaa42580f775.json and https://artists.proofprofile.net/proofs/artist/e68303a0-dd8e-4996-87da-aaa42580f775.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c3167b80c7bdc0d4c171d9a6e0a3e985fe3c63401ca14ce551e3771e8b489dc. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/HUA0S1536216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb18af136bb6dc483f8c5f3b3eca53f69e67148eecad29afddd97150a983c985. Chain 2 (Bitcoin): anchored in block 958689 (2026-07-19T07:11:11Z), 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/HUA0S1536223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf089af0af05f98e33525564569615bb53ccbde0d4cae50bd0b8cc284acdc5c9. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T15:58:01Z), 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/HUA0S1536224.
Hej, De Kutya Jókedvem Van Mix - Hej, De Kuty Jókevem Van / Eger Városa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d88eb5e42f349880764e398b8d309a8e9c8a7d816f9ee09ff6cd4d078bd0f08. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/HUA0S1537908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8a1447b1351a564f4146ed03528cafdcccca60557d1679cae16f42ada6281d4. Chain 2 (Bitcoin): anchored in block 957632 (2026-07-12T00:10:15Z), 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/HUA0S1537912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x394bc157ec4dab3a83400790490ed38d329f1b233f81f928bcf17a4cbafdfd3d. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:15:59Z), 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/HUA0S1537913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbda6e6d37ce6455b3d61c0e7c4a4d4616e775c4ef3bbf6592e3b4acd695b3759. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:36:11Z), 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/HUA0S1538007.
Sárgarézből Van A Pipakupakom, Indul A Svábhegyi Fogaskerekű
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08bd48338b5979792ec6b929c16f056090cb50a0def2341b246a5589e605ef1a. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/HUA0S1540003.
Roma Mix, Pt. 2 - Vedlik A Pulikutya / Fáj A Szívem Jaj De Nagyon Beteg
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc331d89980d49c1389cc530cca4b62482bba06de34502602a1ac62548153ce16. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/HUA0S1541409.
A Babám Fekete Romalány, Mikor A Vodka A Fejembe Száll
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf78a663f2311952cf5d7020a9dc96650e4bd39b9102ccab1ebca4e7565bb7407. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/HUA0S1541411.
Szentkarácsony Éjjel (Harang Szól A Kisfaludban)
Sej, Haj Akácfa - Sej, Haj Akácfa, 4 Cili 6 Cili
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64b3f1bc68623fa5b2e509a5c3f3bbe5f29170fd2ba8695ff86bbf282a844a69. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/HUA0S1543701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e6d8b0a73ede7e839c058df60e63cca034697d1eb5c4a38718ed3211a6acd31. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/HUA0S1543702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7432c6055b75392a93ffc92ef60c872bcd0934a84f785287d262884820093e0. 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/HUA0S1548410.
Nézését Meg A Járását (A Legnagyobb Közönségslágerek)
Vörösbort Ittam Egyveleg / Vörösbort Ittam Az Este / Az A Szép / Utoljára Küldöm Neked
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57c98496348519f8521c16ea4fc7d2f63fa9511695dc6d5a4d6a6f38905d8e9e. Chain 2 (Bitcoin): anchored in block 957634 (2026-07-12T00:26:43Z), 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/HUA0S1547803.