thumb|Risto Joost (2016) Risto Joost (born 22 June 1980) is an Estonian conductor and operatic countertenor. Life Born in Tallinn, Joost has been intensively involved with music since the age of si
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 0xa3002265d4554e83d518ef640487efd99f2fc1dd967db9048e1d69d16bedd4b2. Chain 2 (Bitcoin): anchored in block 953733 (2026-06-15T03:12:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/97438b13-2ce0-4c2a-8dc4-5ae68c462eb5.json and https://artists.proofprofile.net/proofs/artist/97438b13-2ce0-4c2a-8dc4-5ae68c462eb5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Confessions of Faith: Choral Concertos by Bortniansky & Schnittke
Charles Gounod: Requiem / Antonin Dvorak: Messe in D
Messe in D Major, Op. 86: IV. Sanctus (Transcr. Linckelmann for Wind Quintet)
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 0x03e301c6c9e270a70e4d44f158496d63cedcae57bf6904847a3d946c38d3f9dc. 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/DEB111405110.
Messe in D Major, Op. 86: VI. Agnus Dei (Transcr. Linckelmann for Wind Quintet)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbad75c6e90b06fde2ccbadeae5cea8a9154f5161b7b55b8788dbc85bfafad196. 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/DEB111405112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94fe16ffa30dd04a0f4e49abd072e2bab3e22542a57669f74b30cb1e73d1f0ef. 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/FINDE2200195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2cd75be2a11b4740092f21f46f4512113353bb5f864031cb828c32d5ea5180d. 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/FINDE2200197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d1801c4ff81012f3d55af846c947a541c932e7e1f023395dbbf9df77828dc7d. 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/FINDE2200198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f067b04864686c22ec03a8480fae72e84a366b9cbcad7a46108877aa2ede62c. 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/FINDE2200201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc027bde24a51c8497608e1d6d70b865c3e45d1e10601e2820e7c872cbb88a97. 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/BEE641845201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa959a718d6a8fb441291b07195eb721c1e603e7daaf2859c36fc3c65c3b2ba1b. 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/BEE641845202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4ae1c4f62c564204f853fa9ae2a4653c3cd797b2609ddf2474d5fa34741ccc4. 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/BEE641845203.
Moorland Elegies: No. 2, Silent Is the House
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x196cc8f637e611f4b4f2b98b2aa01b58a14009122f4c09e557fd1121e16c51ca. 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/FINDE1700002.
Moorland Elegies: No. 4, Fall, Leaves, Fall
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74168b0657ccf3fb6036ff1971b628e9a643a9a122b19a97a67c57a629d44376. 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/FINDE1700004.
Moorland Elegies: No. 5, She Dried Her Tears
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x896bc80b94f58aff5936aa38c224f1a05fba3feb0f71be886cf139eababf5d41. 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/FINDE1700005.
Moorland Elegies: No. 6, Moonlight, Summer Moonlight
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ccf2136dfc9ca02c5c57b9ed408f26f5a5eb4a0b0e982a04903de4059f026c8. 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/FINDE1700006.
Moorland Elegies: No. 7, The Sun Has Set
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb24ecd356eeb99f7bb7e76a7608d62d054112826446eaa117bf712db031fca59. 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/FINDE1700007.
Moorland Elegies: No. 8, The Starry Night Shall Tidings Bring
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dae02cfbe880ef37ce9f2fcc02528af115532e403aaf806949afdf7906c3b0f. 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/FINDE1700008.
Moorland Elegies: No. 9, Month After Month
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x979704dd5d9dace2c719f62efb17351338381b0a2e7ae4c0f4565288b8015055. 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/FINDE1700009.
Pühapäevasoov (Sunday Wish) (2020/22) - Orchestral version
Dépasser la mort - Sélection musicale de Myriam Watthee-Delmotte
Tõnu Kõrvits: Hymns to the Nordic Lights & Other Works
La donna è mobile: Famous Tenor Arias by Verdi
Theofanidis, Hummel & Mozart: Bassoon Concertos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc67d5bad8dc3af4fd6449bbc0a53073cba659a501d988ea2b7310aead94ff4d2. 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/EEHA11582101.
Bassoon Concerto in B-Flat Major, K. 191: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d97a2d90cd469bae0a0a96e189850e26d13624b6bba11c8c66b62ee7878d6cd. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/EEHA11582107.
Leve de koning! De muziek van de inhuldigingsceremonie van Koning Willem-Alexander