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 0x68bc227bb15f54a9b6968d4febf404e1a720dbab9de3d753a00f7f037467f371. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3dc4cf0e-b778-4609-8048-87866184e5d6.json and https://artists.proofprofile.net/proofs/artist/3dc4cf0e-b778-4609-8048-87866184e5d6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Deux mélodies hébraïques, M. A22: I. Kaddisch (Transcr. by Richard Tognetti for Cello and 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 0xc161284f686bd382a67e7ba2d2afa34e2983cdfdce5ac4842c7171d52de2ad53. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEN961903630.
Orfeo ed Euridice, Wq. 30 / Act II: Dance of the Blessed Spirits (Arr. by Mathieu Herzog for Cello and Strings)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebfa6e8335c01481f1cb3389812184f64e325709dde2c5b0514aabcd68d99ffc. 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/DEN961903640.
Dido and Aeneas, Z. 626 / Act III: "When I Am Laid in Earth" Dido's Lamento (Arr. by Mathieu Herzog for Cello and Strings)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedeaaef70c6191641879c5fd73f0924254f0f0b62cafecbdc070091713dd2b3a. 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/DEN961903650.
Concerto for Cello and Orchestra "Never Give Up", Op. 73: I. Never Give Up
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa722d92d99c2fddfd6f814ad42741f934225d5aeac90dd29c3f03134a4191b0f. 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/DEN961903661.
Concerto for Cello and Orchestra "Never Give Up", Op. 73: II. Terror - Elegy
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31675bc00402fb8ef87006512ba56021944254d144b463fc5935f695422c521b. 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/DEN961903662.
"Kol Nidrei" Adagio for Cello and Orchestra, Op. 47: I. Adagio ma non troppo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf34a6121607d488c8fbbace0c932b8d661e6fab45cf619b860879161aba76080. 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/DEN961903671.
"Kol Nidrei" Adagio for Cello and Orchestra, Op. 47: II. Un poco più animato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66f8f01249e23edcde52733c6ded287a201ac8465c82919df50402614bfa1e9a. 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/DEN961903672.
Wesendonck Lieder, WWV 91: V. Träume (Arr. by Mathieu Herzog for Cello and Orchestra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2ca2ceb71d0ca8dcc87aac5bb91420696578142c1d80f4dd22e5f57388923b8. 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/DEN961903680.
Gypsy Melodies, Op. 55, B. 104: IV. Songs My Mother Taught Me (Adapt. for Cello and Orchestra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x265a354d1e1c1c44d708fc842bfdf02278548ab115cd8015fde05fad27fab27b. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DEN961903690.
Theme from "Schindler's List" (Adapt. for Cello and Orchestra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x978ea1629908a5dd2bc2494b4976255f97b5a843bdfce2ce86b9e7ec373294e8. 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/DEN961903700.
Werther / Act III: "Pourquoi me réveiller" (Adapt. for Cello and Orchestra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1fccc20b42db6906cd9e80bcd10d249d5e8324a9d039f712aee0853b6cffead. 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/DEN961903710.
L'elisir d'amore / Act II: "Una furtiva lagrima" (Adapt. for Cello and Orchestra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bbc5015424152e3ed5caaba8b17515b092530210e66990a9ea59324782959e4. 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/DEN961903720.
Norma / Act I: "Casta Diva" (Arr. by Mathieu Herzog for Cello and Orchestra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x361685763f91fc04cc164350ace240dc8e8f5146148bd3fe5958204b09f4c222. 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/DEN961903730.
Don Giovanni, K. 527 / Act I: "Dalla sua pace" (Adapt. for Cello and Orchestra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8694244ab3f1dd36dbf5fb626b24121a60880fc57b3ec8ea63ead2fd947d747c. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/DEN961903740.
Nabucco / Act III: "Va, pensiero" (Arr. by Mathieu Herzog for Cello and Orchestra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac259d9a5ad9c9e92dce6fd771811513c6064190e58abbf4f486122aa9ce8b00. 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/DEN961903750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bbc5015424152e3ed5caaba8b17515b092530210e66990a9ea59324782959e4. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEN961903720.
Musique classique pour travailler, lire, dormir
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4cb4cb5b16bbec308d0a03aa8e838f8aaeb6c74c829666069143efbaf58ef03. 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/FRZ051800514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc161284f686bd382a67e7ba2d2afa34e2983cdfdce5ac4842c7171d52de2ad53. 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/DEN961903630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebfa6e8335c01481f1cb3389812184f64e325709dde2c5b0514aabcd68d99ffc. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEN961903640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedeaaef70c6191641879c5fd73f0924254f0f0b62cafecbdc070091713dd2b3a. 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/DEN961903650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf34a6121607d488c8fbbace0c932b8d661e6fab45cf619b860879161aba76080. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEN961903671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66f8f01249e23edcde52733c6ded287a201ac8465c82919df50402614bfa1e9a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEN961903672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2ca2ceb71d0ca8dcc87aac5bb91420696578142c1d80f4dd22e5f57388923b8. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEN961903680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x265a354d1e1c1c44d708fc842bfdf02278548ab115cd8015fde05fad27fab27b. 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/DEN961903690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1fccc20b42db6906cd9e80bcd10d249d5e8324a9d039f712aee0853b6cffead. 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/DEN961903710.