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 0x23ccf7092b99948a879b12fc8e75c9cf09debdfad6e798f01e52b5383bd7e1a2. 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/15a5afe7-c6d2-4a7a-8004-79a8f4eb31a3.json and https://artists.proofprofile.net/proofs/artist/15a5afe7-c6d2-4a7a-8004-79a8f4eb31a3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Introduction et rondo capriccioso, Op. 28 - 2022 Remastered Version
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 0xfda7a6984c339ad3efd016c7a0be8e3641d6ab57578c48055ec761399fea596f. 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/USSM12200755.
Charles Münch Complete Concert at Carnegie Hall (Live at Carnegie Hall, New York, 1/31/1948)
Haydn, Beethoven & Others: Orchestral Works (Live)
Ravel: Daphnis et Chloé, M. 57 & La valse, M. 72 (2020 Digital Remaster) [Live]
Beethoven: Symphony No. 5 in C Minor, Op. 67 - Schubert: Symphony No. 8 in B Minor, D. 759 "Unfinished"
Felix Mendelssohn & Robert Schumann: Symphonies
Mozart: Piano Concertos Nos. 21 & 27 (Remastered)
Piano Concerto No. 21 in C Major, K. 467: II. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffb9f57d21fb1aa70034044344eee49ea3d9146325740bfb9b92a2119f7f440e. 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/USSM11509695.
The Complete Recordings on Warner Classics
Sviatoslav Richter Plays Schumann & Brahms
Fantasiestücke, Op. 12: No. 1, Des Abends
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb54ae14a6fd8005ba6b33aa21fa27261478c2535397aca163c9dcaf01d43ca8a. 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/DEAD61767004.
The Parables, H. 367: III. Poco allegro - Moderato - Poco allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f0a2988b1d8121dcd40b37481173f6133dab0b3480ae847642bfe9ce7244576. 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/FROV66238922.
Tribute to Gregor Piatigorsky [Brahms, Saint-Saëns, Bloch]
Victoria de Los Angeles: Fauré, Debussy & Ravel
Mendelssohn: Symphonies No. 4 in A Major, Op. 90 "Italian" & No. 5 in D Minor, Op. 107 "Reformation - Smith: The Star-Spangled Banner
Symphony No. 5 in D Minor, Op. 107 "Reformation": II. Allegro vivace
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33ab7be90f18de13f51e51735adb4ad305b2ce77cb1d921e260cfdb821589641. 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/USBC10510017.
ベルリオーズ：幻想交響曲 作品 14 & リハーサル
Ernest Chausson: Symphonie, Poème de l'amour et de la mer - Claude Debussy: Printemps
ブラームス：交響曲第 1番＆ハイドンの主題による変奏曲
Debussy, Poulenc, Vaughan Williams, Honegger & Barber: Orchestral Works
Tribute to Charles Munch [Berlioz, Franck, Saint-Saëns...]
Tribute to William Primrose [Mozart, Berlioz, Bartók, Walton]
Saint-Saëns & Dvořák: Cello Concertos (Remastered)
Claudio Arrau plays Beethoven Piano Concertos
In Memory of Arturo Toscanini (Complete 1957 Concert of the Symphony of the Air) (1957)
Samuel Barber Historical Recordings (1935-1960)
Munch conducts a Treasury of French Music
Bizet: Symphony No. 1 / L'Arlesienne Suites Nos. 1 and 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b6e6a78e0b325f92a65a834773934b55059f1922731c1941349e7dd4641b401. 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/DEAD60409002.
Richter Archives, Vol. 19: 1960 Boston Symphony Debut (Live)
Tchaikovsky: Symphony No. 6 in B Minor, Op. 74, TH 30 "Pathétique" & Piano Concerto No. 1 in B-Flat Minor, Op. 23, TH 55
Mozart: Clarinet Concerto K. 622 & Clarinet Quintet, Op. 108, K. 581
Lalo: Cello Concerto in D Minor: II. Intermezzo - Allegro presto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcde834a6cf54bfcf9a9bb38fc4c8cb9b3b4750132d24f0f8ad5f1767efa535c6. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FRZ206506502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dda6999302ca2282ee5fc444c64eee619bb203efedaec262ca41f8bf06b0c72. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USBC10401979.
Symphony No. 5 in C Minor, Op. 67: I. Allegro con brio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb735ffff52c4d1624a329b1fc3bd7356a1bfe36b3b9541a43ac9fad589cb370d. 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/US6R21442805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3baa5f567a115ae76ecd99204fd47ba403900abec94d03f53dbbbd626bbfe01. 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/USBC19704261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b727019504277f2e26754ebbcfe82a72d334803b34b93e7cd0f472469e78456. 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/USBC10402025.
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
Symphony No. 3 in C Minor, Op. 78, "Organ": III. Maestoso; Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbc33933e42cd4b6d3134458a41d24bde3821d2314f814465b3738b0749adea6. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/USBC15900250.