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 0x1f8d36feec9d8cd03a07ad8353a04361c9fbd5882aad83acde5b43f914144e50. 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/45194d5d-590d-48ab-8f0c-1ff890a5f77f.json and https://artists.proofprofile.net/proofs/artist/45194d5d-590d-48ab-8f0c-1ff890a5f77f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Die Csardasfurstin (The Gypsy Princess) (Sung in Hungarian): Act I: Elojatek
Hungarian Radio And Television Symphony Orchestra
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 0x7c85f3f6c659344b9f32c784f1924eeb5c2802c2ce1454ec5743480eedb1c1db. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/HUA251678001.
Die Csardasfurstin (The Gypsy Princess) (Sung in Hungarian): Act I: A lanyok, lanyok, a lanyok angyalok (Feri, Boni, Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c5821749659bf279277b7347904715e6ca7168458ccf6fed1ec6fcb0a87d236. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/HUA251678003.
Die Csardasfurstin (The Gypsy Princess) (Sung in Hungarian): Act I: Egy a szivem, egy a parom (Edwin, Szilvia)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ac4c16f6210baf3cef59af16d6871d77a300c17dbbff45d5748be6069c14a3a. 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/HUA251678004.
Die Csardasfurstin (The Gypsy Princess) (Sung in Hungarian): Act I: Jaj, cica (Boni)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdddcccf848767240e50d8f38378af1592319837164e871d8bda7e053e2cb92d6. 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/HUA251678005.
Die Csardasfurstin (The Gypsy Princess) (Sung in Hungarian): Act I: Nincs szebb, mint a szerelem, az asszony osszetor (Szilvia, Edwin, Boni)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed515af0a9a743714a70d05d6ab1d37e39801ac9cf51fdee07410ca796c3aeb6. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/HUA251678006.
Die Csardasfurstin (The Gypsy Princess) (Sung in Hungarian): Act I: Finale (Feri, Szilvia, Boni, Miska, Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e9be7a6e42db6e05c50068de01024b5394aa196618f7286aa81ecdf232d1203. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/HUA251678008.
Die Csardasfurstin (The Gypsy Princess) (Sung in Hungarian): Act II: Tul az operencian (Stazi, Edwin)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2eb18d5c4b6560264253c88e54490e0ede09a782ec5f1118ddfca5e0bb4e8e1. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/HUA251678010.
Die Csardasfurstin (The Gypsy Princess) (Sung in Hungarian): Act II: Te rongyos elet (Boni, Stazi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x281d511bcb9a8e5711fed076036f34f06872bdb77055ac4dd660269175494ef7. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/HUA251678013.
Die Csardasfurstin (The Gypsy Princess) (Sung in Hungarian): Act II: Finale (All)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84db3b9bdb918df8b095ae313cb41b494d21039de4d8808b439d5f14bf52726a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/HUA251678015.
Die Csardasfurstin (The Gypsy Princess) (Sung in Hungarian): Act III: Finale (All)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78e8f3baee995cae7b3b11e0211810e9db85dab47b22e76cb85d5793d53cce11. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/HUA251678016.
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 956312 (2026-07-02T05:09:12Z), 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/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.
Die Csardasfurstin (The Gypsy Princess) (Sung in Hungarian): Act I: Hogyha sziven kered tolem (Szilvia, Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfa1f44ae842a07d2ba185dd7b7416440de897c74b6c2daef653cf2505743b7f. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/HUA251678002.
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
Die Csardasfurstin (The Gypsy Princess) (Sung in Hungarian): Act I: Hajmasi Peter, Hajmasi Pal (Feri, Miska, Cecilia)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5707f8c7642de43031791e8bfc7a46d652b73da6535105699d83461f67b7290f. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/HUA251678007.
Die Csardasfurstin (The Gypsy Princess) (Sung in Hungarian): Act II: Tanckeringo (Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x759852ccfce1634dcc0acbd1cfaad55f2c76f3a7a5920de9499d95c46b7af1e7. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/HUA251678009.
Die Csardasfurstin (The Gypsy Princess) (Sung in Hungarian): Act II: Emlekszel meg (Szilvia, Edwin)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f96288ecb2f6e12664e7b7db6742935f51535b8010af6b81007d4184870f9b3. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/HUA251678011.
Die Csardasfurstin (The Gypsy Princess) (Sung in Hungarian): Act II: Hurra, hurra (Edwin, Boni, Stazi, Szilvia)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08bde90a2bc0530562efdd0eb8d57f442de658e7a08c468616342808a212e03c. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/HUA251678012.
Die Csardasfurstin (The Gypsy Princess) (Sung in Hungarian): Act II: Alom, alom, edes alom (Edwin, Szilvia)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcaacc7bfa35090ed983bd2b6903f2f7941cbc28a543f130ad68c6339ba8b051. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/HUA251678014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21b58059b191f630b00659b3be6886fbce7c43b97ecea3b1990fde1d4871fa4e. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/HUA251390801.