Oscar Levant (December 27, 1906August 14, 1972) was an American concert pianist, composer, conductor, author, radio game show panelist, television talk show host, comedian, and actor. He had roles in
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 0x40fd471382693f87e9ef9135a8d9450ef6413186bf83ecd53068d2961048d0ee. Chain 2 (Bitcoin): anchored in block 953791 (2026-06-15T13:40:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dbdf92ff-6842-42d8-96a0-3d3389171f74.json and https://artists.proofprofile.net/proofs/artist/dbdf92ff-6842-42d8-96a0-3d3389171f74.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Grieg: Concerto pour piano in A Minor, Op. 16 - Tchaikovsky: Concerto pour piano No. 1 in B-Flat Minor, Op. 23 (Mono Version)
Oscar Levant Plays Chopin, Rachmaninoff, Shostakovich, Scott and Prokofiev
Oscar Levant Plays the Music of German, Russian and American Composers (Remastered)
Grieg: Concerto in A Minor, Op. 16 - Honegger: Concertino for Piano and Orchestra (Remastered)
Oscar Levant - Some Pleasant Moments in the 20th Century
An American In Paris (Original Motion Picture Soundtrack) [Deluxe Edition]
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 0xccf51dd8a1608602246a70977eba53f1cb504812c80bd41ca6a86c38055ac599. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/USNLR1500272.
Medley: We Would Get Married (Love Walked In) [Outtake] / I Don't Think I'll Fall In Love Today
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2121cef81eb69bb96ada8a77f4fc8793558432fa255d2046c51c978167f60a7. 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/USNLR1500279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5f084e90b40608d8e5123da3f1c1f8ec29f82cbfbecffc6786a32f9fccfa809. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNLR1500280.
Medley: My Cousin In Milwaukee / A Foggy Day / The Half-Of-It Dearie Blues / But Not For Me - Outtake
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbd88e110180798e715e4adc9db2a308f8a81d0d1fd9e0f80dddcc88a361502c. 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/USNLR1500271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6199294f88f2dfab69c0559d0e72bdc2356f4490192decaafb18981ec079f67c. 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/USNLR1500278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ee3cddf6d42455d82bdfa9e500d8807f00310e47d2cf0a922ae27c34957e6d6. 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/USNLR1500286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25b381c82e3201446c7569a021961c48d0fea748224716d6fc95f1beb168f766. 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/USNLR1500302.
Main Title/ That's Entertainment ("The Band Wagon" / "That's Entertainment, Pt. 2") - 2006 Remaster
That's Entertainment (The Ultimate Soundtrack Anthology of MGM Musicals)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69c72a8e42535a95b91e97085e6a225adcdf29502fc17f3e320c93ea2652af7a. 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/UST1C0550563.
Adam Cook Monologue (How Long Has This Been Going On?) - Extended Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3daf18c4b51e0656e4a0275040a234693dbf1e0155f126640ce9cf550ab771a. 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/USNLR1500298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x844351daf4caab79f19ca9d4ea0c593621eba061b8ecaf9988bd1fd250a4e359. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNLR1500300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacba7ceca4b0f73f29ea028b2058693d5644ecd66bf2316b4fbd1d74ca7c817e. 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/USNLR1500301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bb2e0c546475d52481a6124cbc49f25f5d799a782e6a29fb36e5f519fa03d7f. 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/USNLR1500303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9ed5fbd071958587dfeaa667f2b8b40d47ffc448af622c3acb21ba6f29228d2. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNLR1500304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf44662835803c5af342cd5382a99689d5a687b9ac8c7ec139bfaedc4919f4f8d. Chain 2 (Bitcoin): anchored in block 960422 (2026-07-31T15:27:29Z), 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/USNLR1500305.
Blame It On My Youth (Arr. for Vibraphone & Piano) - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3091d725cfd34ea2ce11f04ddcd119bd951e038626508a0df5ac8279b7b6c2e2. 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/DELN21702004.