Robert Levin may refer to: Robert Levin (musicologist) (born 1947), American pianist and composer Robert Levin (Norwegian pianist) (1912–1996), Norwegian pianist and composer Robert Levin (writer) (b
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 0x5e7dfad52d8626441f7f74f64d5a840bcfdfb6edaf1551beda750b48a65f523c. 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/67542ef6-0a1f-441b-9ba0-44780a92e1fd.json and https://artists.proofprofile.net/proofs/artist/67542ef6-0a1f-441b-9ba0-44780a92e1fd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Denisov: Ode - Clarinet Quintet - Clarinet Concerto (Digitally Remastered)
Märchenbilder, Op. 113: 1. Nicht schnell
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 0x14b12239a3902cb8c085470e8663172c8e3ff7132de5d46cfbdf21271a6391be. 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/DEB339450822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9946d3f649ada7bbc8fa1652aa3f3e9f4e45f77335fcdafb94f77c4722c89978. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/DEB339450824.
Beethoven: Piano Concertos Nos.1-5; Symphony No. 2, Op. 36; Fantasy For Piano, Chorus And Orchestra, Op. 80; Choral Fantasy (two altern. improv. piano introd.); Rondo For Piano And Orchestra
Piano Concerto No. 3 in C Minor, Op. 37: I. Allegro con brio (Cadenza: Levin)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86743ff5e0a337bc1269a48f33b55daa56b606dfed0f0f28ebe33dcef416111c. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/DEF059704121.
Piano Concerto No. 1 in C Major, Op. 15: I. Allegro con brio (Cadenza: Levin)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1b0eca695546845c0f267991b5a2493cc1710400ca4a34d16bf705f53fc08e0. Chain 2 (Bitcoin): anchored in block 960487 (2026-08-01T00:15:43Z), 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/DEF059505111.
Piano Concerto No. 4 in G Major, Op. 58: III. Rondo. Vivace
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40a7f4dca1307a574359553fdef3ba2dcc2405fa1090e68146de8c368e7b6c2f. 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/DEF059704133.
Piano Concerto No. 7 in F Major, K. 242: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8820c813f295fbaaa5772180f7287862167f4c173c239858665db342ffa4460. Chain 2 (Bitcoin): anchored in block 960429 (2026-07-31T16:07:24Z), 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/UK22H2343001.
Concerto for Violin, Piano and Orchestra in D Major, K. Anh. 56/315f
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc407b097ea71f5b92a7d40b370a3014b3359b43e2d4ac4f606fa7b70edf79ab3. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/UK22H2343004.
Piano Concerto No. 10 in E-Flat Major, K. 365/316a: III. Rondo. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82349d2d60b2949e0ab9379346a86e67b259898852f98e1414064d0421f86db7. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UK22H2343007.
Sibelius, Grieg & Scriabine: Edition Klavier-Festival Ruhr, Vol. 34
10 Pensées Lyriques, Op. 40: No. 1, Valsette
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87ee7cc6930b38fe4483cc34def2e932b4b92533caf9d0bd717774584c97df26. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/DEAQ71554122.
Mozart: Piano Concertos Nos. 15 & 26 "Coronation"
Mozart: Piano Concertos Nos. 11 & 13; Rondo in A major
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcddb25445f328285dbb8ad783be94fc6cced54c59c9c6b8001c2ba4a262451d9. 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/GBMY51300215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa05de840737aab77b5dbbdd7329e01308912fcefc68dd07732f2dd38044c049c. 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/GBMY51300219.
Violin Concerto No. 3 in G Major, K. 216: II. Adagio (Cadenza: Levin)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9490026f7e047658deb71feb21c7f626f5b44111ea2030f37c99bf4bccb4596b. 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/DEF058402191.
Wolfgang Amadeus Mozart: Schatten ung licht: Chapter 5: Fort mir dir nach Paris! (1777-1779)
Camerata Academica des Mozarteum Salzburg
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3935e00c9089ac8108e4eac958dd40c5aba4a7debc95cc1fd6207ab6fe28b604. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DELW71490605.