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 0x271cfd94a7ac407021bc8413d61b9259bda45f6b023e57e660f0ab984fad1a8e. 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/9fefe89e-d805-4fe6-9516-269161d14b3d.json and https://artists.proofprofile.net/proofs/artist/9fefe89e-d805-4fe6-9516-269161d14b3d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Franck: Symphony in D Minor - Symphonic Variations - Massenet: Orchestral Suite No. 4 "Scenes Pittoresques"
Tchaikovsky: Symphony No. 1 "Winter Daydreams" - Suite No. 4 "Mozartiana"
Berlioz: Benvenuto Cellini Overture - Symphonie fantastique
Tis The Season: Tchaikovsky's The Nutcracker for Christmas
The Nutcracker, Ballet Suite, Op. 71a: I. Little Overture
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 0x99ab503c7f133ba29245b6f7288cceb8aad17702f0b1ebdbc7ba45c9048638a8. 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/DEA580600156.
The Nutcracker, Ballet Suite, Op. 71a: II. March
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28d18409ac4e43045a97e8f1ae87c7d80a4522eb52a93e21b49184d8c8894ec3. 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/DEA580600157.
The Nutcracker, Ballet Suite, Op. 71a: IV. Russian Dance (Trepak)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee4b00982170f20d221a1e13bd3f8b3eb15c06282310527b4d8b04dd7783e30b. 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/DEA580600159.
The Nutcracker, Ballet Suite, Op. 71a: V. Arab Dance
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd88d9fd60f778e1d3e4eaba2dd5647db179d9280a586e395716805b408e8fc64. 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/DEA580600160.
The Nutcracker, Ballet Suite, Op. 71a: VI. Chinese Dance
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2bf915b2cc2329b46a3a4eaa638b767284f72411980079a81967d11898ff204. 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/DEA580600161.
The Nutcracker, Ballet Suite, Op. 71a: VII. Dance of the Reed Pipes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x041fda79f1667d80def6c9a513b378b2d9cf77e2332a9daf4960b3d7b153d585. 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/DEA580600162.
The Nutcracker, Ballet Suite, Op. 71a: VIII. Waltz of the Flowers
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3062370b4d2931215698c2f52d12c49b90a94dc5dde455ccb01e7cf2ce4ed5d0. 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/DEA580600163.
Green Edition - Beethoven: Symphony No. 3, Op. 55 & "Kreutzer Sonata", Op. 47
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa837bc6f7c14a5b09e375a711a2395ab23f6b37a69edb864844e5810acfc6340. 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/GBQRF1342464.
Tchaikovsky: Symphony No. 5 in E Minor, Op. 64 (Digitally Remastered)
Tchaikovsky: Symphony No. 4 in F Minor, Op. 36 (Digitally Remastered)
Tchaikovsky: Symphony No. 3 in D Major, Op. 29 (Digitally Remastered)
Beethoven: Symphony No. 6 in F Major, Op. 68 - "Pastoral"
Blue Edition - Beethoven: Piano Sonata No. 21 "Waldstein"
Blue Edition - Beethoven: "Eroica" Symphony, Op. 55
Bruckner: Symphony No. 4 'Romantic' - Symphony No. 2
Blue Edition - Beethoven: "Moonlight Sonata" & "Souvenirs"
Saint-Saëns: The Carnival of Animals (Digitally Remastered)
Paganini: Concerto for Violin and Orchestra No. 1 in D Major, Op. 6 (Digitally Remastered)
Mendelssohn: A Midsummer Night's Dream, Incidental Music, Op. 61 (Digitally Remastered)
Smetana: Má vlast (Digitally Remastered)
Haydn: Symphony No. 104 in D Major, Hob. I/104 (Digitally Remastered)
Dvorák: Symphony No. 5 in F Major, Op. 76, B. 54 (Digitally Remastered)
Brahms: Concerto for Violin and Orchestra in D Major, Op. 77 (Digitally Remastered)
Beethoven: Symphony No. 2 in D Major, Op. 36 (Digitally Remastered)
Bruckner: Symphony No. 9 in D Minor "Dem lieben Gott" (Digitally Remastered)
Bruckner: Symphony No. 6 in A Major (Digitally Remastered)
Bruckner: Symphony No. 5 in B-Flat Major (Digitally Remastered)
Bruckner: Symphony No. 2 in C Minor (Digitally Remastered)
Bruckner: Symphony No. 4 in E-Flat Major “Romantic” (Digitally Remastered)
Mendelssohn's Dream - [The Dave Cash Collection]
The Carnival of Animals: III. Wild Asses
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a12a02087f1803f8522f5917569c1a03f5b3f899243f60803d618dc5dcb5566. 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/USSJ10901526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b41f64230942eeb60ffd487869f4e873cf6828036df0475ddca637fbbd98dcb. 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/USSJ10901533.
The Carnival of Animals: XI. The Pianists
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x728602ea4deb2c4fd64449f40f4cab05c5625f27c8faa4533dee10dafe50b7d2. 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/USSJ10901534.
Saint-Saëns: The Carnival of Animals: XIII. The Swan
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81012d529a2bdd792b987fe4a548a40c682aee1ad1d25832b66126a22c4f24f2. 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/USSJ10901536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70f52435b2d7218edbed7c77dfd5ce3f10b03739636ce09e8321724e01d10eb8. 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/USSJ10901537.
The Carnival of Animals: I. Introduction and Royal March of the Lion
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e2d6f4e7e2a8a82ef89190b24919026efb38fa80c1a8bad7c5bb2b445099aa8. Chain 2 (Bitcoin): anchored in block 960330 (2026-07-31T00:58:21Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSJ10901524.
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
The Carnival of Animals: II. Hens and Roosters
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x299eaa11e4307c18e2ab819c60c73be899dcb648155a822c0ce7057011e0588c. Chain 2 (Bitcoin): anchored in block 960298 (2026-07-30T19:26:00Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSJ10901525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ddc7d6f09422603f3fc17e19444ee705aaf1bff6633c8b56e4da2e5fe43d6c5. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/USSJ10901527.
The Carnival of Animals: V. The Elephant
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67c03bafac17f0affe11a32823cb53589fbfbc37a9f97849632fdfb60d5d4e65. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSJ10901528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9fcb55516b0b9c98fb7510f7b1c8db80a794b2531bf5cdeedf6cf6b126b87a8. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/USSJ10901530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06a1310f542dcec7a736a6c5770ab7390d5b8cddf3fe5a8088e681cf796852ea. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSJ10901535.
Haydn: Symphony Nos. 55 "The Schoolmaster", 57, 63 "La Roxelane" & 73 'La Chasse'
Piotr Ilich Tchaikovsky: Classical Dreams. The Nutcracker
Ludwig Van Beethoven: Classical Dreams. Leonore