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 0xb99eeebfe7f3f1bf39e36bc3cc7ac43c7311ceaee51642fa541903f9da9313d2. Chain 2 (Bitcoin): anchored in block 953892 (2026-06-16T05:01:46Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0e8bd2a8-536a-4a82-badf-c9026f47556a.json and https://artists.proofprofile.net/proofs/artist/0e8bd2a8-536a-4a82-badf-c9026f47556a.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 0xe8532689f723989111f2d53458266d3934678babc0d962e69d94b56f12f9b92f. 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/HUA251388101.
Ugri meg bugri: Brekeke es Zsakrago urfiak utazasa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28ffa5b8c5c597c1f16cc15c984fddaaf057d4f7bbf8be9df71f7d4c851143e9. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), 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/HUA251388102.
Ugri meg bugri: A kutya meg a lo (Music by B. Zsoldos and G. Vilmos)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x579651988947003cc7bb93025628dc440faa5953c998c2d1958dc24ee1d6d429. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/HUA251388103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d41517c1f9ebd7225dfad78bb3d91c858a90b15840559fcff355363ef34346a. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/HUA251388104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fd94cc9a3500009b9e4ab8265417b789ffcc7de98d658399625739d0c111ff5. 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/HUA251388105.
Ugri meg bugri: Ludhaboru (Music by B. Zsoldos and G. Vilmos)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9ad117c4f743bea317083367bbeb1201682cca1e83d5349e5687e51210cc94e. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/HUA251388106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd32018be9e84c1286506edff4bfb41886e9675aa6c4eb6f9acc0f6056381ed15. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/HUA251388107.
Vendég a háznál, öröm a háznál (music by I. Bergendy)
Süsü, a pesztra, Vendég a háznál, öröm a háznál
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3998897bc1d7f4259d681f0bb991b7e8b8f7cd0d73afbf057d6a3b770eb77009. 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/HUA251403801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a713dc6b54a5936afff2a59be52cd35cc88f8d8094b8616b9561a03b1ec28d7. 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/HUA251403802.
A mű-Süsü (music by I. Bergendy): A mu-Süsü (music by I. Bergendy)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7b2c42034f1b9e67dd1ab4da190af77462b415127b87f4b2b38b50bfe10625a. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/HUA251403901.
A bűvös virág (music by I. Bergendy): A buvös virág (music by I. Bergendy)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad25514aba6ed02a6c0ff38140030d6af1d9d37afab2f4b6eaeaa5c21c9d0c27. 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/HUA251403902.
Süsü csapdába esik (music by I. Bergendy)
Süsü csapdába esik, Süsü és a sárkánylány
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0324eb49dab0927f5521cf4afa5a329476cc0e458563ad02a13c730531c1f933. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/HUA251409101.
Süsü és a sárkánylány (music by I. Bergendy)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb922bfff1a84c0bde9c7c4f45205d9ea5834a98244a32b94eb0c20a52d5dcb6. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/HUA251409102.
Süsü újabb kalandjai: A Sárkány Ellátó Vállalat
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa61ba65e881cd01696698a67f835a5345279049f7d3d0e9454dcf6bae5c11b5b. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/HUA251399501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c137f2715c3a528baa8fde5d8d6006b02d96105b203abb08fbcf6dcfbb95ac4. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/HUA251399502.
A ketbalkezes varazslo (music by G. Berkes)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebeb3979e7e1532cede9825a021057831acb3adba50bd8866006773ec8ca9384. 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/HUA251401801.
Az égig érő fa (music by G. Illyés): Egyszer volt, hol nem volt …
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9277c008783d68a7abd5438525fe43e6907aa6169ff663f1e8775205732520b0. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/HUA251403701.