North German Radio Philharmonic Orchestra
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 0x4342dd059cc2896947bd1a7aee75ff5eda6a464eb2ab834ecd8b4e2b57ddb201. Chain 2 (Bitcoin): anchored in block 953780 (2026-06-15T12:02:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d4a10824-5891-49cc-b838-ae03502f1ff9.json and https://artists.proofprofile.net/proofs/artist/d4a10824-5891-49cc-b838-ae03502f1ff9.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Mozart, Süssmayr: Requiem (Mono Version)
Mozart: La flûte enchantée, extraits choisis (Mono Version)
Bruckner: From the Archives, Vol. 3 (Remastered 2024) [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 0x41bfeb7ac46b9bd8ee86c2b948ca4aee19a6601dbb9ccdf6c19c9f7c17813925. 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/USB8U2006280 — a six-check JSON result.
Concerto for Orchestra: I. Intrada (Allegro maestoso)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e0360a50408bd758b1b24bcc9361303be13c20caf28c331a880596274a0f4a9. 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/FR50X1523201 — a six-check JSON result.
Concerto for Orchestra: III. Passacaglia, toccata e corale (Allegro con moto - Allegro giusto)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9895ffffb64f80d1295cf72b3614a5c8510f0245e0622067d7b5f7817c499b89. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/FR50X1523203 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd023dbee8770f71c9468d81d0e7920cfe812caa8c4289a2e3612ff7378bc600. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/FR50X1523204 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa622717e7d88374aee93dd57783f97afc75f47134e4eb5539ba2e6eb5f3854f5. 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/FR50X1523205 — a six-check JSON result.
Little Suite: IV. Taniec (Allegro molto)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51d3f4fbe71f170e85cef8cb16d4f1ad87420488047e5aed5affe24e94870d86. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR50X1523207 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa833cee77477bfe2898f7f80d2e2aa573ad782a8774a6d70ea98de0c1786219c. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/FR50X1523208 — a six-check JSON result.
Martha Mödl Sings Händel, Purcell, Gluck, Mussorgsky and Others
Historical Mahler, Vol. 2 (Remastered 2023)
Fidelio without Dialogues starring Peter Anders
Franz Schreker: Die Gezeichneten (Hamburg 1960)
Beethoven: Piano Concerto No 5, Symphonies Nos. 3 & 5, Coriolan
Rontgen, J.: Symphony No. 18 / 6 Old Netherlandish Dances / Ballade On A Norwegian Folk Song
Johannes Brahms: Masters of Music, Vol. 15
Brahms: Symphony No. 2 - Strauss: Sinfonia Domestica
Atterberg: Sinfonia Visionaria - Alven (The River)
Tuning and applause [before Beethoven: Violin Concerto in D Op. 61]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacae4da1a9559ecf8dcb44c18364148d8bdf825472766c2c2171bb00fd2b0dc2. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYD9200216 — a six-check JSON result.
Beethoven: Violin Concerto in D Major, Op. 61: I. Allegro ma non troppo (Cadenza by Kreisler) [Live]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41ce6e224a1ef8c4a86ba6a160ff7cf083f38b50e96316cbd54bbb30ea829387. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYD9200108 — a six-check JSON result.
Beethoven: Violin Concerto in D Major, Op. 61: II. Larghetto (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0df128068caa790cd6a626f9e012d7b5a36354b85b5f60b65aae00e45c5988d6. 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/GBAYD9200109 — a six-check JSON result.
Beethoven: Violin Concerto in D Major, Op. 61: III. Rondo. Allegro (Cadenza Nigel Kennedy) [Live]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc1b1b20226070bd59c5fca16365636062e863ddec02abe73c3f7e4319f822e5. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYD9200110 — a six-check JSON result.
Sonatas and Partitas BWV1001-06: Sonata No. 3 in C BWV1005: IV. Allegro assai
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b5937ba889c8dd1f6c3a45eccfa5e6a531db340e4b5b29236a41bc5a37b1551. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYD9200218 — a six-check JSON result.
Mozart: Piano Concertos Nos.20, 21, 23 & 27
Mozart: Piano Concerto No. 23 in A Major, K. 488: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d35fd64679cec0bb0d00b504b883c9c09d01e178ac1f354b8b0b8c61fb53c65. 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/DEC628500425 — a six-check JSON result.
Mozart: Piano Concerto No. 23 in A Major, K. 488: II. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d5345e51bf060cc5007849f533c860a5aeb24db3905cc7303e06ab9d5fc8cce. 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/DEC628500426 — a six-check JSON result.
Mozart: Piano Concerto No. 23 in A Major, K. 488: III. Allegro assai
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe15e2c63e365e6504c1274f095b76db963adf3b8bc48043e4162f36398f3fefb. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEC628500427 — a six-check JSON result.
BERG: LULU SUITE "SYMPHONISCHE STÜCKE AUS DER OPER LULU", DER WEIN "KONZERTARIE", LYRIC SUITE "LYRISCHE SUITE"
Wolfgang Amadeus Mozart & Camille Saint-Saëns
Mozart: Serenade No. 10, K. 361 "Gran Partita" (Mono Version)
Mozart: Symphonies Nos. 38 "Prague" & 40 (Mono Version)
Schubert: Messe No. 5, D. 678 (Second Version, Mono Version)
Hindemith: Nobilissima Visione & Métamorphoses symphoniques (Mono Version)
Tchaikovsky: Lac des cygnes, Op. 20, Extracts (Stereo Version)