Symphonieorchester des Bayerischen Rundfunks
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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 0x0a7cc95c26db42a25ddc473c833b67a8a4ffcd8a3a94ac265afb30e84ec99571. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a92be4a1-334d-49cc-b066-657e60a70b25.json and https://artists.proofprofile.net/proofs/artist/a92be4a1-334d-49cc-b066-657e60a70b25.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Mozart: Così fan tutte, K. 588 (Sung in German) [Recorded 1957]
Mascagni: Cavalleria rusticana (Sung in German) [Recorded 1954]
Bartók: Piano Concerto No. 3, Sz. 119 - Tchaikovsky: Symphony No. 6 in B Minor, Op. 74
Violin Concerto, Op. 15: I. Moderato con moto – Agitato – Tempo primo - Live
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 0x3335b0c25f5f20a04c2aa26faea5adcc6c551fdc7f8c2c73e41f515901d2fe8d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR7JM2203010 — a six-check JSON result.
Violin Concerto, Op. 15: II. Vivace – Animando – Largamente – Cadenza - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7005c25d72ab274f250011bcf5c5957941cb8e791fde4ee41d5f5584a08749e9. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR7JM2203020 — a six-check JSON result.
Violin Concerto, Op. 15: III. Passacaglia. Andante lento (Un poco meno mosso) - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63c5f47e95969ea21c3fe10cad570e4a6930b88ce7a12de75112417090c85935. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR7JM2203030 — a six-check JSON result.
Reveille, concert study for violin with piano accompaniment
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69f96a40010918f5194ce1a6b41d283ab67da3ccdc101e3bf53b32250bdb2a94. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR7JM2203040 — a six-check JSON result.
Suite for Violin and Piano, Op. 6: Introduction
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2feb2d6f9bfae922c95972ada91ef75c64e7e2e393ba3e2f0eacc47a309f55ea. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR7JM2203050 — a six-check JSON result.
Suite for Violin and Piano, Op. 6: I. March
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x337e4ebde5c36b9b2438e7b6ca2306b9213aa229b2d2568a786dfc5a3f04b74a. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR7JM2203060 — a six-check JSON result.
Suite for Violin and Piano, Op. 6: II. Moto perpetuo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3564a5148866382dbaf9cd218d203796d20e4c95d5355166b226e9202d44801e. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR7JM2203070 — a six-check JSON result.
Suite for Violin and Piano, Op. 6: III. Lullaby
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62e37bf9e13f4eecf06a123884d168b1edbb4c0131776b48a56c56096d2c6376. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR7JM2203080 — a six-check JSON result.
Suite for Violin and Piano, Op. 6: IV. Waltz
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf94f00abf0ec7c24e6f6417bed7f563f85ebbe5511516e46a8273a7bf42a52f4. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR7JM2203090 — a six-check JSON result.
Two Pieces for violin, viola and piano: I. Un poco andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1df335e424370d1d6bb3034cb7316b05cab0b99e1d4600b72d2497b215d49192. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR7JM2203100 — a six-check JSON result.
Two Pieces for violin, viola and piano: II. Allegro con molto moto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26f066280a9ce7a9ff5600731c182c098221037109ad1b0b6b627020c5974448. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR7JM2203110 — a six-check JSON result.
Der Schauspieldirektor - The Impressario
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba96c1261495ab29a95c53981db31ad98cd6b24a38da286ba5fe6a3f76a4bd95. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEAD62142201 — a six-check JSON result.
Der Schauspieldirektor: Terzett: Ich bin die erste Sängerin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64af467533c0c3e65c6410b161719ef807be449fe5588bbef629163f657c273d. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEAD62142204 — a six-check JSON result.
Spohr: Symphony No. 6 in G Major, Op. 116 & Symphony No. 9 in B Minor, Op. 143 "Die Jahreszeiten"
Symphony No. 9 in D Minor, Op. 125: Presto - "O Freunde, nicht diese Töne!" - Allegro assai
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe38449838cc749196c09d8cda574c3c450bcfc049a3cfd3eba7a509b2f511d6e. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF057503588 — a six-check JSON result.
Faust / Act 4: No. 22a "Gloire immortelle"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69962cf5708add69b9f874d2f8dad8ae8bcee2daf256f844831348ec3516e06b. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA508534451 — a six-check JSON result.
Piano Concerto in A minor, Op. 16: II. Adagio - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90b3fd63461bab362656fdc7fd36f41b011422b5ee9ddb110558c6300514199e. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN961501842 — a six-check JSON result.
Cherubini: Missa solemnis in D Minor: Kyrie eleison I
Mozart, Cherubini, Beethoven, Tchaikovsky, Rachmaninov, Verdi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96c6e5ababdf718b5cb71d1c19137269cbb1d3fd1796913f508d8b0037b91421. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC0101612 — a six-check JSON result.
Cherubini: Missa solemnis in D Minor: Christe eleison
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77c876d2501ee15424f34094c52aa896d7dab8e53793f5e47ea153ac07eb2b7d. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC0101613 — a six-check JSON result.