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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18999a989e17b0db281477f1d4d2fc613942ec28ae9ed71c81c544a03b3bac39. Chain 2 (Bitcoin): anchored in block 954000 (2026-06-16T20:18:46Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/31bcbd53-0996-4564-b14e-5e5021e9cc88.json and https://artists.proofprofile.net/proofs/artist/31bcbd53-0996-4564-b14e-5e5021e9cc88.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Il trovatore, Act I: Tacea la notte placida – Di tale amor - Live at Großes Festspielhaus, Salzburg, 1962
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47248405b2f7f0a5f94dc5d54848ace9a0c03fb039eb182129039b72f533d173. Chain 2 (Bitcoin): anchored in block 960225 (2026-07-30T08:04:30Z), 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/DEF056231504.
Il trovatore, Act I: Deserto sulla terra – Non m'inganno. Ella scende! – No. Di geloso amor - Live at Großes Festspielhaus, Salzburg, 1962
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7018750174f5f06cdeba9d166ab37163a8d6ec4575ab145e465078deac9cf4e6. Chain 2 (Bitcoin): anchored in block 960259 (2026-07-30T12:51:24Z), 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/DEF056231506.
Il trovatore, Act III: Di quella pira - Live at Großes Festspielhaus, Salzburg, 1962
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x650269549cdda71a90ca84e29fcccc5adf44c70759aa9b767b96804e5e1048d0. 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/DEF056231523.
Il trovatore, Act II: Non son tuo figlio? – Mal reggendo all'aspro asalto - Live at Großes Festspielhaus, Salzburg, 1962
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc01ecffc7b5a8c69a67993daec5a2665a14535a22a7e8a5421129c0dc2a5a555. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/DEF056231510.
Il trovatore, Act II: L'usato messo Ruiz invia - Live at Großes Festspielhaus, Salzburg, 1962
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7552fe675edcb6993ea24d2c75a4986215e9500d969973ce439b90ecbef792d. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/DEF056231511.
Bach: La Passion selon saint Matthieu (Mono Version)
Concerto No. 2 in E Major for Violin and Strings, BWV 1042: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b71c1a8fcb6e1b6393dcaaeaf1260bb571188c104f758bb1a80f185387418db. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/SEWDL0727004.
Concerto No. 5 in F Minor for Harpsichord and Orchestra, BWV 1056: II. Arioso: Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26b38616d95adcd189cad123a538283377d0bfad2b68273474ce697027ebf2f4. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/SEWDL6011638.
The 99 Most Essential Christmas Masterpieces
Il trovatore, Act I: All'erta! all'erta! - Live at Großes Festspielhaus, Salzburg, 1962
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d9b1607ae91c3ce4f36e640c7c6a23711fda58960cecb89a09f720cd810c47a. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/DEF056231501.
Faszination Klang - Die Wiener Philharmoniker
The Strauss Dynasty: Favorite Waltzes, Polkas and Galops
Johann Strauss, II: The Gypsy Baron (Johann Strauss, Jr.: The Gypsy Baron)
Orchestral Suite No. 3 in D Major, BWV 1068: II. Air
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c0855a1d2c025086c45378fb3069c28b97536281d41ebeebfce8447696e7255. 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/USZDG0600527.
Cello Suite No. 3 in C Major, BWV 1009: V. Bourée 1 & 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06f623f8fbb03c576bb722a7a96abb2c77edb5425a00ad485f94b4731256e622. 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/SEWDL0712705.
Violin Concerto No. 2 in E Major, BWV 1042: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b71c1a8fcb6e1b6393dcaaeaf1260bb571188c104f758bb1a80f185387418db. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/SEWDL0727004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f50a8e8727f4a7c90c9f44cc0b10c745f8ec0e654a9ca68ed54804ea6789074. 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/SEWDL0741302.
Orchestral Suite No. 2 in B Minor, BWV 1067: VII. Badinerie
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb2605a02004235c7423b7fbdd12d88aff897c933be8c2e5a90b4a12d018581e. 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/USZDG0601071.
Herz und Mund und Tat und Leben, BWV 147: X. Jesu bleibet meine Freude (Jesu, Joy of Man's Desiring)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ac1ab7682db81ea048688d762edf2d7455b7080513746f0ca82900dfd08ac77. 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/USZDG0700025.
Harpsichord Concerto No. 5 in F Minor, BWV 1056: II. Arioso: Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26b38616d95adcd189cad123a538283377d0bfad2b68273474ce697027ebf2f4. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/SEWDL6011638.
Concerto for Two Violins in D Minor, BWV 1043: I. Vivace
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fe9f5f5c0a49d7d875f5eb868f3893bda44a60c313a21b4344bfef282c4b4d2. 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/SEWDL0533101.
Brandenburg Concerto No. 1 in F Major, BWV 1046: III. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fcc80e858106af65f282f9c01d625ebacc36d858dddfb9f23e23a314ba02c00. 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/USZDG0600013.
Brandenburg Concerto No. 3 in G Major, BWV 1048: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fa3280b68b8617494f06490d2c796ebefde2aad9e96deef78f421a36da8b8aa. 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/USZDG0700312.
Brandenburg Concerto No. 3 in G Major, BWV 1048: II. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7def3dc4e0a853c66e54b9850326294d1c38e6a297166993ceef99dbece841d2. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/USZDG0700313.
Brandenburg Concerto No. 3 in G Major, BWV 1048: III. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8680eec138363ef01c3f9235b978c21fdc1dc93aa2fb62c30df8510912ab56b1. Chain 2 (Bitcoin): anchored in block 960407 (2026-07-31T13:26:30Z), 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/USZDG0700314.
Brandenburg Concerto No. 5 in D Major, BWV 1050: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfb0bc508a1271434fe8ae6ad334d36c23bd978d8ed0222a4a2abeb3206a6998. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/USZDG0600082.
Brandenburg Concerto No. 5 in D Major, BWV 1050: III. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8144c1b256ca0f6982170a48b9ab2073a052d416a049eaaee564c3c92b85c41. 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/USZDG0600084.
Wachet auf, ruft uns die Stimme, BWV 645
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde1ab97e7daef2b77aa2e2cba122e41eef9d1a0d1f4067b6fc6657a73c9de2dc. 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/SEAEC8636080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07944ec400c0869b286d01bd92f921bfa86da849be81fb37097a03008ada6084. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/SEWDL0746201.
Violin Concerto No. 1 in A Minor, BWV 1041: I. No Tempo Indication
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Fugue in G Minor, BWV 578 "Little Fugue"
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Passacaglia and Fugue in C Minor, BWV 582
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Prelude in C Minor for Solo Lute, BWV 999
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Eight Small Preludes & Fugues, BWV553-560: I. Prelude and Fugue in C Major, BWV553
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Concerto in D Minor for 2 Violins, Strings and B.C, BWV 1043: II. Largo ma non tanto
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Christmas Music for Your Christmas Eve Celebration
Haydn: Mass in C Major, Hob. XXII:9 "Missa in tempore belli" - Mozart: Regina coeli, K. 276 (Live)
Bach: The Passion According to St. Matthew
A Classical Christmas (The VoxBox Edition)
Mendelssohn: Paulus, Op. 36 (Mono Version)
Schubert: Messe No. 2, D. 167, Chant victorieux de Miriam, D. 942 & Hymne au soleil, D. 439 (Mono Version)
Der Rosenkavalier, Op. 59: Akt I, Introduktion - 2014 Remastered Version
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Der Rosenkavalier, Op. 59: Akt III, Einleitung und Pantomime - 2014 Remastered Version
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Der Rosenkavalier, Op. 59: Akt I, Wie du warst! Wie du bist! - 2014 Remastered Version
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Der Rosenkavalier, Op. 59: Akt II, In dieser feierlichen Stunde der Prüfung - 2014 Remastered Version
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Der Rosenkavalier, Op. 59: Akt II, Mir ist die Ehre widerfahren - 2014 Remastered Version
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Der Rosenkavalier, Op. 59: Akt I, Quinquin, es ist mein Mann! - 2014 Remastered Version
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Der Rosenkavalier, Op. 59: Akt I, Selbstverständlich empfängt mich Ihre Gnaden - 2014 Remastered Version
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Der Rosenkavalier, Op. 59: Akt I, Di rigori armato il seno - 2014 Remastered Version
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Der Rosenkavalier, Op. 59: Akt III, Marie Theres'! (Hab' mir's gelobt, ihn lieb zu haben in der richtigen Weis'...) - 2014 Remastered Version
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Der Rosenkavalier, Op. 59: Akt III, Ist ein Traum, kann nicht wirklich sein - 2014 Remastered Version
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R.Strauss: Der Rosenkavalier - The Sony Opera House
Schubert: La croisade des dames (Mono Version)