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 0xb6b0ebec6485cf72f009946022aa06bcc5796b7c59dadfe12719c1f4bd7fddd7. Chain 2 (Bitcoin): anchored in block 954048 (2026-06-17T05:00:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/417f16f9-e5e8-4ede-8b5b-a836f25a3549.json and https://artists.proofprofile.net/proofs/artist/417f16f9-e5e8-4ede-8b5b-a836f25a3549.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Bach, J.S.: Brandenburg Concertos Nos.2, 3 & 4; Orchestral Suite No.3, BWV 1068
Brandenburg Concerto No. 4 in G, BWV 1049: 2. Andante
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 0x3a16b71a97624ea612fbe2e41a7b8baaed78a47b32115da70865a26f565fce24. 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/DEF056000562.
Orchestral Suite No. 3 in D Major, BWV 1068: II. Air
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b662c053e58d348df192e61abfe127f284b1ccfea8c930be6efce41f3e5b68f. 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/DEF056002672.
Orchestral Suite No. 3 in D Major, BWV 1068: III. Gavotte I-II
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Orchestral Suite No. 3 in D Major, BWV 1068: V. Gigue
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Das Schaffen Johann Sebastian Bachs: Serie K. Instrumentalkonzerte (Stereo Version)
Brandenburg Concerto No. 3 in G Major, BWV 1048: II. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fbb25cbe4f52b225911704564fef8a5dc2c1d6dfd6339933ca30b1112e292d0. 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/DEF058200413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b662c053e58d348df192e61abfe127f284b1ccfea8c930be6efce41f3e5b68f. 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/DEF056002672.
Matthäus-Passion, BWV 244, Pt. 2: No. 39, Erbarme dich (Arr. for Oboe d'amore, Violin & Ensemble)
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Die deutsche Vorklassik: Serie A. Georg Philipp Telemann (Stereo Version)
"Baroque Festival" - Festival Strings Lucerne
Concerto grosso in D, Op. 6, No. 5: 1. (Larghetto, e staccato)
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Concerto grosso in D, Op. 6, No. 5: 5. Allegro
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Concerto grosso in D, Op. 6, No. 5: 6. Menuet (un poco larghetto)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02664e05d902ca84b7e0d7108a33eb2a543c2748de59dd4070343f06531288f2. 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/DEF055800566.
Concerto grosso in D, Op. 3/1, RV 549: 2. Largo e spiccato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce7673023396ea1ddd87a8f0fe8ab62fc5da77ef870ebe7e0626b6d9b531f028. 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/DEF056703942.
Concerto in A Major For Solo Violin, Violin "per eco in lontano", Strings And Continuo, RV 552: III. Allegro
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Sonata For Cello And Continuo In E Minor, R.40 - Arr. by Paul Bazelaire: 1. Large
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Sonata For Cello And Continuo In E Minor, R.40 - Arr. by Paul Bazelaire: 3. Lent et expressif (alla siciliana)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x559f406c27a215a605b9d12cacdea9bd680994303bc5f7babd39ca9bac879430. 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/DEF056302311.
Sonata For Cello And Continuo In E Minor, R.40 - Arr. by Vincent d'Indy: 2. Allègre
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64f81eb39116a2f8d7b64fb3cfe6fe4b67e1bb5547faf89c617895e1e9969c98. 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/DEF056302314.
Brandenburg Concerto No. 1 in F, BWV 1046: 1. (Allegro)
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Brandenburg Concerto No. 1 in F, BWV 1046: 2. Adagio
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Brandenburg Concerto No. 1 in F, BWV 1046: 3. Allegro
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Symphony No. XX in E minor: 3. Allegro assai
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Violin Concerto in G Minor, Op. 8, No. 2, RV 315 "L'estate": I. Allegro non molto - Allegro
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Violin Concerto in F Major, Op. 8, No. 3, RV 293 "L'autunno": II. Adagio molto. Ubriachi dormienti
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bea11878df375d2766ce73b5696c68b1cb50db37c3bc8956879c411f90a1aab. 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/DEF055902322.
Violin Concerto in F Minor, Op. 8, No. 4, RV 297 "L'inverno": II. Largo
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Pièces de Clavecin en Concert / Troisième Concert: 1. La La Poplinière - Rondement
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Pièces de Clavecin en Concert / Troisième Concert: 2. La Timide (Rondeau 1 et 2) - Gracieux
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Pièces de Clavecin en Concert / Troisième Concert: 3. 1er Et 2ème Tambourins - Vif
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Don Quichotte - Suite: 2. Le Reveil de Quixotte
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