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 0x60ec9dbc105209783bb3d89e5ac669b096b42d08cdbfd7337cb2c6243fcee723. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/61babb37-7e34-4027-b91c-00b106d0badd.json and https://artists.proofprofile.net/proofs/artist/61babb37-7e34-4027-b91c-00b106d0badd.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.
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.