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 0x8f70ac7a17f14fd1241f197afe077952c062199df2d838da7909d7452af87095. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ca76ca9c-e5d0-40a1-9827-cdc3f0934b1c.json and https://artists.proofprofile.net/proofs/artist/ca76ca9c-e5d0-40a1-9827-cdc3f0934b1c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Birgit Nilsson sings German Opera - Arias by Wagner, Weber & Beethoven
Verdi: Falstaff; Cimarosa: Il maestro di Cappella – Excerpts (Opera Gala – Volume 14)
A Guided Tour of Nationalism in the Romantic Era, Vol. 8
Celebrating 50 Years Devoted to British Music, Set 2: Gordon Jacob to William Wordsworth
Lloyd: Symphonies Nos. 6 & 7 "Proserpine"
Stevens: Cello Concerto - A Symphony of Liberation
Stevens: Violin Concerto - Symphony No. 2
Verdi: Preludes, Overtures & Ballet Music, Vol. 4
Verdi: Preludes, Overtures & Ballet Music, Vol. 3
Amy Shuard Sings Operatic Arias In Italian
Verdi: Preludes, Overtures & Ballet Music, Vol. 2
Verdi: Preludes, Overtures & Ballet Music, Vol. 1
Gliere: Horn Concerto & Bronze Horseman Suite
Bronze Horseman Suite: Ic. Dance on the Square
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 0xaeff3e5a45eeb39d38c1f367607bdb3d35ca8e90445a42fed21ff7a7e0b75516. 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/GBLWD9506303.
Bronze Horseman Suite: IIb. Parasha. Andantino
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f44b1eddf5b6344b99ed0d248a7bad7ee5e29680ebd88b5bc77486fda332c8a. 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/GBLWD9506305.
Bronze Horseman Suite: IIc. Lyric Scene. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75a5a0343f37c406682bc1bf5560b8b501d80bdd1b6d7de22a97a400c0b3d088. 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/GBLWD9506306.
Bronze Horseman Suite: III. Dancing Scene. Vivace
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cc5f62d5df79d9cd32c53e39ac2e27d0ca65233fc37ba993489f99b0a4e94ff. 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/GBLWD9506307.
Bronze Horseman Suite: V. Meeting. Allegro agitato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6ba4e3c2581194cef3ee487751cbd69302bb4e098ee01173aefc7d4c5e6643f. 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/GBLWD9506310.
Bronze Horseman Suite: VI. Waltz. Tempo di valse
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cc57cd1e7066fa69c9885bc32cbedf827a63b077887f40be71ef188d2104e59. 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/GBLWD9506311.
Concerto for Horn and Orchestra, Op. 91: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0be76a6afb679df666b7c607181cf81f51e0ff68d4a5cb88f36f1e2d1087a387. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:08:48Z), 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/GBLWD9506314.
Respighi: Belfagor Overture, Toccata for Piano and Orchestra, Tre Corali & Fantasia Slava
Respighi: Piano Concerto in A Minor & Concerto in modo misolido
Piano Concerto in A Minor, P. 40: II. Adagio molto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4052ece933fb13f31f2a0d78149172be767033939e539c37fec8e2d5ad69385. 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/GBLWD9405202.
Symphony No. 2 in E-Flat Major, Op. 63: II. Larghetto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5d1478fecd1b1b0579371f99c89d88dd36980bde8c5a582f8f4eaa93281bdd1. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/HKI199421402.
Respighi: Concerto gregoriano, Poema autunnale & Ballata delle Gnomidi
Concerto gregoriano, P. 135: II. Andante espressivo e sostenuto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee2a528e3957d3c8affa40cb34507614a511460d04ff0694ce9a88af0306371c. 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/GBLWD9313703.
Korngold: Symphony in F-Sharp Major & Abschieslieder
Symphony No. 1 in E-Flat Major, Op. 8: I. Andante - Allegro moderato - Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6370761ff9f2693554a06fa034976669cced97c967844a008a8c6fa425f0a1ae. 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/GBLWD9303601.
The Red Poppy, Op. 70: I. Heroic Coolie Dance
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5878b62b170076e0c638ad4b403fd1ff269ab08347d86c16644d45f80916c23. 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/GBLWD9303605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0436a0276f6f96c896c31ab8d2f9e8cacc56ff89c473152b5c61a5cfa9ee5c8a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBLWD9303610.
The Red Poppy, Op. 70: VI. Russian Sailor's Dance
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbeb7a634983b88480e446e415c76f6237fedbc380491ed4dd694020ad7b24e1. 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/GBLWD9303611.
Gliere: Symphony No. 2 & The Zaporozhy Cossacks
The Zaporozhy Cossacks, Op. 64: I. Introduction
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe148cc80f64d09fff6ae9b8a75198e13cdaa3f720a5366224f5db8797528fab1. 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/GBLWD9205205.
Tosca, SC 69 / Act 3: "E lucevan le stelle"
Orchestra of the Royal Opera House, Covent Garden
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd33a6b80571486df075f9e8bfc0e5227916ee79a0084cde35195f6951b83b54e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBF076412350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02197a556c672e31712aeea982cf2cc97dbb4375f65bd552447d454724757f17. 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/GBF076412330.
Madama Butterfly: Act II: Un bel di vedremo
J'aime pas le classique mais ca j'aime bien
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x795fd4dba043c87e5d667dc658d7b8dfb7be0b55dce0234fcc6d553c300388e9. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USBC10200468.
Luisa Miller: Act II: The Intrigue: Scene III: Oh! fede negar potessi; Quando le sere al placido
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22516fdee4cd8671fd6ae49e16a0c2096a84db28a3c3105a1f73a67779fb2839. 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/USBC16800137.
Ich mag keine Klassik, aber das gefällt mir!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x795fd4dba043c87e5d667dc658d7b8dfb7be0b55dce0234fcc6d553c300388e9. 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/USBC10200468.
Lohengrin, WWV 75: Act III: In fernem Land
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a13164b833a976e406d65bd4241dc50741fca06c7122f076cdb5ea86dd54e93. 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/USBC16800139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80c73fa17cd4476f896e79929cf41a812d0ae8a8d755d8c91ca33412542a6d70. 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/CAM460670222.