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 0x6ec4aa3dd3157013fe080c4349c4f626829954755c95be3b69ec0a7766b5453c. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6b91dc28-6120-471d-967a-404ce3b9a3f0.json and https://artists.proofprofile.net/proofs/artist/6b91dc28-6120-471d-967a-404ce3b9a3f0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The History of Classical Era Music (100 Famous Songs)
A Beginner's Guide to Learn to Love Classical Music
Orchestral Suite No. 3 in D Major BWV 1068: II. Air
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 0x3ad3abb29a1d45104a6f84a9bd4d62d814b1022063e5d31da06e5f44f6e6a5fa. 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/US5541602752.
Brandenburg Concerto No. 3 in G Major, BWV 1048: III. Allegro
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Meditation: Classic Care - Music for Healthy Living for Calming Reflection & Quiet Time
Classical Stress Relief: 99 Must-Have Classical Meditation & Relaxation
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Piano Sonata No. 14 in C-Sharp Minor, Op. 27 No. 2 "Moonlight Sonata": I. Adagio sostenuto
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11e8f893852290c3b276f307d793a99d262194064c98b4259365e219409e2080. 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/US5541602855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa141373e73e7964e864aabbece7c2c535b48b46ebdaa525d00c6925a345477ae. 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/US5541602856.
Tosca, Act III: "E lucevan le stelle" (Instrumental Version)
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Classical Masterpieces of the Millennium
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7905e6a3ab555967d056e41e744ffe61a5237572e85e357f67e01119616da2f3. 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/US5541304492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf1b1b543fba4623a669fe576791042af929d3e6b7f3789c5bcfe051df4f4701. 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/US5541304185.
100 Must-Have Classical Music for the Reader
Relaxation: Classic Care - Music for Healthy Living for Unwinding & Taking It Easy
Sleep: Classic Care - Music for Healthy Living for Sweet Dreams & Peaceful Sleep
Carmina Burana: I. O Fortuna (From “Jackass: The Movie”)
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Mandoline Concerto in C Major, RV 425: I. Allegro (From “Casanova”)
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A Midsummer Night's Dream, Op. 61, Act II: Intermezzo (From "A Midsummer Night's Sex Comedy")
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Impromptu No. 3 in G-Flat Major, D. 899 (From "Gattaca")
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Fidelio, Op. 72, Act I: Aria and Chorus: Ha! welch ein Augenblick!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b9067182e974956f255e7cde60eeae5892947c9fee389b2b1c3a105a882c455. 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/US2TL0927005.
Klavierkonzert Nr. 5 Es-Dur, Op. 73: I. Allegro
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Fidelio, Op. 72: Act I: Finale: O welche Lust, in freier Luft den Atem leicht zu heben!, "Prison Chorus"
Bulgarian National Svetoslav Obretenov Choir
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d158626c933daa10a1026b5ce36bdbd8e80a1c5eb480f600a6a914c4146adb4. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/US2TL0924017.
Piano Sonata No. 14 in C-Sharp Minor, Op. 27, No. 2, "Moonlight": III. Presto agitato
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Symphony No. 3 in E-Flat Major, Op. 55, "Eroica": IV. Finale: Allegro molto
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaf87d25f581a52d61e9a63349ea20212cf6f78e9fcd431e82265cb66073b53d. 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/US2TL0924019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd24f8d70ca4ce1ff1fea18f86e62c6b83ddbed2d1e4e83b4138e845b7ba581d7. 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/US2TL0924015.
Bagatelle in A Minor, WoO 59, "Fur Elise"
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Overture to Collin's Coriolan, Op. 62, "Coriolan Overture"
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Piano Sonata No. 8 in C Minor, Op. 13, "Pathetique": II. Adagio cantabile
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Klavierkonzert Nr. 5 Es-Dur, Op. 73: II. Adagio un poco mosso
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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
Klavierkonzert Nr. 5 Es-Dur, Op. 73: III. Rondo: Allegro
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Piano Concerto No. 2 in B-Flat Major, Op. 19: II. Adagio
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Ludwig van Beethoven: Concertos For Piano And Orchestra
Béla Bartók: Piano Concerto No. 1, BB 91, Sz. 83 - Piano Concerto No. 3 in E Major, Sz. 119
Lubomir Pipkov - Dmitri Shostakovich: Selected works
Dimiter Nenov: Concerto for Piano and Grand Orchestra (Live)
Vesselin Stoyanov: Concerto For Piano And Orchestra No. 3 In B Flat Major; Prelude, Nocturne and Etude
Concerto For Piano And Orchestra No. 3 In B Flat Major: 1. Vivace
Bulgarian National Radio Symphony Orchestra
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Marin Goleminov: Simphony No 2 & Concerto for Piano and Orchestra
Béla Bartók: Piano Concerto No. 2, Sz. 95 - Rhapsody for Piano & Orchestra, Op. 1, Sz. 27
Beethoven: Piano Concerto No. 5 in E-Flat Major, Op. 73 Emperor
Classical Masterpieces of the Millennium: Beethoven
Bagatelle No. 25 in A Minor, Woo 59, "Für Elise"
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The Adagio Collection - 50 Calm Classics
Classical Music for the Reader 9: Great Masterpieces for the Dedicated Reader
Partita for Harp D-Flat Major: Pastorale. Andante dolce e scorrevole
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