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 0x5cfbd5a06958c5a78192c0ac73de0edec12ebe0a77c65762497f4e59063718c4. Chain 2 (Bitcoin): anchored in block 953877 (2026-06-16T02:39:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/07a1fc0e-d8f6-4526-a527-0076c0d70030.json and https://artists.proofprofile.net/proofs/artist/07a1fc0e-d8f6-4526-a527-0076c0d70030.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Tzigan nota (Improvisation au style Tsigane)
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 0x5e0b1e75757574a1d03aeaab97b9d42523044c714fc1558ac80d9b82cc67e4e9. 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/QMDA71379901.
Doina Olteniasca / Hora Láutareascá (Roumanie)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacc48b573636243bb51814eff714621cd2dd53513af1c36331f4dfb21e567003. 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/QMDA71379905.
Romanian Folk Dances, Sz. 68 (Arr. for Clarinet, Cimbalom & String Orchestra by Jonas Dominique & Olof Wendel): Variation [Added by Jonas Dominique]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd0a0c24f5efbcfbf804cd412611bd1cabfe89979dfe588c3f86871b2ec1b97e. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DERK62463718.
Romanian Folk Dances, Sz. 68 (Arr. for Clarinet, Cimbalom & String Orchestra by Jonas Dominique & Olof Wendel): No. 4, Buciumeana
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb138edd414ed4a9e23fc0ca2ba21972cd81f164b1a559aa561d35eb2d357e493. 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/DERK62463719.
Romanian Folk Dances, Sz. 68 (Arr. for Clarinet, Cimbalom & String Orchestra by Jonas Dominique & Olof Wendel): No. 5, Poargǎ româneascǎ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0810a583d3e288db4d649f87615805abda9d9a660875a8ed3fbd68f9ccba959. 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/DERK62463720.
Kadona sedi v bachona (Montagnes Rhodope Bulgarie)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26f3ba722db7d5cb4ff3b4a2ab1ed360bf9b77c3e279f637b94fd16edbc54d14. Chain 2 (Bitcoin): anchored in block 960179 (2026-07-30T00:39:11Z), 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/QMDA71379906.
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
Egy veleg (Chanson et danse dans le style des Tsiganes de Budapest)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1c6b8218c6f771a1121836be1b829b0ad16fb8106c4c587d0b3005be7a4d5ac. 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/QMDA71379908.
Doãna Olteniasca (Instr. Tsigane Roumanie)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b297f0e4cd64e6d7c6bdc5505407fabdf9cb74e72115689c80397e5cfb27de2. 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/QMDA71379917.
Moma e moma rodila (Montagnes Rhodope Bulgarie)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dc0dfac7a1325e8fecda2207be54ca7c26e031a6a4923ed3c607c07bb1a35a1. Chain 2 (Bitcoin): anchored in block 960191 (2026-07-30T01:51:26Z), 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/QMDA71379913.
De man daje mol te piau (Tsigane Roumanie)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16bb4633756116bfbe45e4bb62201b0f90675bf126d272e15a46b2cc2cb5f258. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/QMDA71379929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x307c99b440f420e5c8dc45fdb3107d95dffa49c1668eab87142cd7173735ecb7. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/QMDA71379930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbc89ae3431d7ba6c7ae06dbb006e16a822b2a9c060e5a0566183877c51aadce. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/QMDA71379935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf323abf0f00a3ed88503dad70b88a10c8552c92e7d54126de9341e4d967b224f. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/QMDA71379936.
Romanian Folk Dances, Sz. 68 (Arr. for Clarinet, Cimbalom & String Orchestra by Jonas Dominique & Olof Wendel): No. 2, Brâul
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96c4f48bb2466036ef4f54d9a4a4facb4f5970ce3326f63fd25add46dc893f4f. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/DERK62463716.
Romanian Folk Dances, Sz. 68 (Arr. for Clarinet, Cimbalom & String Orchestra by Jonas Dominique & Olof Wendel): No. 3, Pê-loc
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f2381c819693e550820d268ce4d0f15f8332a68bee6e5d2517574d709681fb5. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/DERK62463717.
Romanian Folk Dances, Sz. 68 (Arr. for Clarinet, Cimbalom & String Orchestra by Jonas Dominique & Olof Wendel): No. 7, Mǎrunţel
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3846a75e5c6d0889ee373f4ba023908d49f6723da288fa486ead360fb2857627. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/DERK62463722.