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 0x2d10f73d00c29f75f8dead520f9bfcfd6accb6733163940241029dddef95f2c5. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/828701a3-8e8c-4602-8275-226243279e1e.json and https://artists.proofprofile.net/proofs/artist/828701a3-8e8c-4602-8275-226243279e1e.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Symphony No. 2 in C Minor Resurrection: I. Allegro moderato (Totenfeier)
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 0xc485f9de046ba0f4a0b5c7eaaf72af27a37c1bdcc24a1b9be0ae19487fe4f116. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/NLY332400473 — a six-check JSON result.
Symphony No. 2 in C Minor Resurrection: II. Andante Moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe35a0fa3b39d2be284f1c7b9da101855f56ec3d6921f558bc5d698dafea03af1. 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/NLY332400474 — a six-check JSON result.
Symphony No. 2 in C Minor Resurrection: III. In ruhig fliessender Bewegung
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0474041785ce3f8c11eb614f5cdd773f02a7d2f2a19020bad6786abd2e1e12bc. 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/NLY332400475 — a six-check JSON result.
Symphony No. 2 in C Minor Resurrection: IV. Urlicht. Sehr feierlich, aber Schlicht
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf0dbc81bc68253732ed863e8348b329bdab4fbfcaee172be586394541b454ae. 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/NLY332400476 — a six-check JSON result.
Symphony No. 2 in C Minor Resurrection: V. Finale. In Tempo des Scherzos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dbc3d8115c2496df46f9ba8fe1e0059e4568835e2a6710ffd2b777b3d655e9f. 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/NLY332400477 — a six-check JSON result.
Orchestra Sinfonica Nazionale della RAI di Torino
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3630702e3816a529b3bd13dd771474440f603d88e4d89d4c8a638008ff25fe32. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/US4BP1729901 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cc5370fb4187f4d3e2f8615347697d92f7e77fcca79bf582cf931307a718bd9. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/US4BP1729902 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x227704ae1baf5bb64e07fd1c91b8bc6d81b007140d6c0d8b1a00f4d45264da28. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/SEAEQ1379070 — a six-check JSON result.
Largo and Allegro in D Major (arr. E. Sauter for flute and strings)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f422a9ed943c77d6b79e8f409d507fc2e18b49c71cb862bcc9df389d03adecc. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEAEQ1379080 — a six-check JSON result.
Flute Sonata, FP 164: I. Allegro malinconico (arr. L. Berkeley for flute and orchestra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e0145e20ee247fb3b3104c80f23cb7c5856faae6960cfa28b1ea58dbf745100. Chain 2 (Bitcoin): anchored in block 960288 (2026-07-30T17:41:38Z), 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/SEAEQ1379090 — a six-check JSON result.
Korngold: Violin Concerto in D major, Op. 35 - Dvarionas: Prie ezerelio (By the Lake) - Violin Concerto in B minor
Violin Concerto in D Major, Op. 35: I. Moderato nobile
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x444c6549b6d00459878c1d7186c3f21ab1b7062f853177c7456b5daba765cc07. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/SEAES1022010 — a six-check JSON result.
Violin Concerto in D Major, Op. 35: II. Romanze. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf0dd593806927d79a61d19c9bc225de53891075807d6cccbb2833f369af9391. 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/SEAES1022020 — a six-check JSON result.
Violin Concerto in D Major, Op. 35: III. Finale. Allegro assai vivace
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1682476cfe9e6752e1bfd24d9a1878a8d9bc9fb134e3afcd5d1403538dba1f09. 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/SEAES1022030 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45f08d8c18c9745f3fd0e47ebcbae33d470db5be265b9627fd7f566158f6f122. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/SEAES1022040 — a six-check JSON result.
Violin Concerto in B Minor: I. Andante semplice - Allegro strepitoso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e1af057b27e73db48d18adb1bb64327d258af04fa23baa75b9f917555d578d5. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/SEAES1022050 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32cf8bdf775a037eaaf042da831649376b5e37ac98c4fb98e1ffc48099a9ba0c. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/SEAES1022070 — a six-check JSON result.
Tamberg: Joanna Tentata Suite - Symphonic Dances - Concerto grosso
Concerto grosso, Op. 5: I. Allegro moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf066eb2ea19471ec6c676d247326198ddedfe3266cdc26ba821687932318c2a4. 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/SEAEQ1077110 — a six-check JSON result.
Verhulst: Overtures & Symphony in E Minor
Nabokov: Ode - Meditation Sur La Majeste De Dieu
Liszt: Works for Piano & Orchestra, Vol. 3
Concerto for Piano and Orchestra in E-Flat Major, No. 1, S. 124: I. Allegro maestoso. Tempo giusto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa00acad59a9595280d07914dbe23664d749c2e8a92c667913f8589d1dd85f7aa. 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/GBLWD0603301 — a six-check JSON result.
Fantasy on Hungarian Folk-tunes, Op. 458, S. S123
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1485f81a191b22e0a78f42f506bf50d64e7fe7eea465f5d18c5d2eefe2d1d652. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/GBLWD0603404 — a six-check JSON result.
Liszt: Works for Piano & Orchestra, Vol. 2
Voormolen: Baron Hop Suites Nos. 1 & 2, Concerto for Two Oboes, Eline
Baron Hop Suite No. 1: II. Sarabande Fagel
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x092d4e0ca8d8df752079297b55f626b7e80203543c227fe8b5116481f252183b. 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/GBLWD0004302 — a six-check JSON result.
Concerto for Two Oboes and Orchestra: II. Arioso. Andantino cantabile
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd52d661ee7f98d8b5b8db8c8bb1aa1178bec2d3119121336243e4fc6797a43c1. 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/GBLWD0004306 — a six-check JSON result.
Baron Hop Suite No. 2: III. Air William V
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x577c08efcecc03c0a4776f925450b18736049b5b8ed349b9d7fb5712ae77b278. 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/GBLWD0004311 — a six-check JSON result.
Liszt: Works for Piano & Orchestra, Vol. 1
Scriabin: Piano Concerto, Fantasy & Prometheus
Zhukov: Kontsert-misteriya (Concerto Mystery)
Keuris: To Brooklyn Bridge, Intermezzi & L'Infinito
Diepenbrock: Orchestral Works and Symphonic Songs