Oleg Caetani (born 5 October 1956) is an Italian conductor. Life and career Born in Lausanne, Caetani is the son of Igor Markevitch (1912-1983) and Donna Topazia Caetani (1921–1990), Markevitch's s
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 0x673ac7b344effca537ff44d664c0addbf253162d04432fee7d8fc4c05c4dc13e. 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/6caf519d-68ad-4463-b34a-a09f5ddf51c1.json and https://artists.proofprofile.net/proofs/artist/6caf519d-68ad-4463-b34a-a09f5ddf51c1.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Weber: Clarinet Concertos Nos. 1, 2 & Clarinet Concertino in E-Flat Major, Op. 26
Violin Concerto in D Major, Op. 61: I. Allegro ma non troppo
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 0xb86237e5e6d7cd74e05351d8b259f830d0e9b44ad189fa0fa159dd124376870d. Chain 2 (Bitcoin): anchored in block 960183 (2026-07-30T01:10:20Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLLH2270401 — a six-check JSON result.
Violin Concerto in D Major, Op. 61: II. Larghetto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68ac962855f5aa1350224cc66784db67085078695c5d9727e2348a8b84db5006. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLLH2270402 — a six-check JSON result.
Violin Concerto in D Major, Op. 61: III. Rondo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c635c6f73e770b71da6115477a8af77c1bb31560934a9e7ab6425712dc0e4ad. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/GBLLH2270403 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5df4469b332eb5b6d6f76c4c0ef36036c81d89d7713d625dedbe4fa8a8291e3. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLLH2270404 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88161536fa231118f894d3ac4acaefb9576e9da63bdf19e23a35f24710aaa18f. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLLH2270405 — a six-check JSON result.
Rachmaninoff: Symphony No. 3 in A Minor, Op. 44
Tansman: Symphonie de Chambre, Sinfonietta No. 1, Sinfonietta No. 2 & Sinfonia piccola
Tansman: Symphony No. 2, Quatre Mouvements pour Orchestra & Symphonie Concertante
Shostakovich: Symphonies No. 3, Op. 20 & No. 14, Op. 135
Shostakovich: Symphonies No. 12, Op. 112 & No. 2, Op. 14
Stephan: Music for Violin and Orchestra & Music for Orchestra
Shostakovich: Symphonies No. 9, Op. 70 & No. 10, Op. 93
Shostakovich: Symphony No. 7 In C, Op. 60, "Leningrad"
Shostakovich: Symphonies No. 5, Op. 47 & No. 6, Op. 54
Pizzetti: Canti Della Stagione Alta / Sinfonia Del Fuoco
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68ac962855f5aa1350224cc66784db67085078695c5d9727e2348a8b84db5006. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBLLH2270402 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88161536fa231118f894d3ac4acaefb9576e9da63bdf19e23a35f24710aaa18f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBLLH2270405 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5df4469b332eb5b6d6f76c4c0ef36036c81d89d7713d625dedbe4fa8a8291e3. 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/GBLLH2270404 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4235a3b44280eb56129b56f9207cd271c5b13159a5b0fbb1985b3cbf54114736. 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/GBLLH0915805 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e36258ec5e6adfe174283490fcabe02007bab43beed7956aef68b08f7246b5e. 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/GBLLH0608509 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cfeb23d5aa5e82351405d6a308ccf963f47fe9583e2db2da8a3233ec951ce4a. 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/GBLLH9700212 — a six-check JSON result.
Music For The Moment: Zodiac Sagittarius
South Pacific: Some Enchanted Evening: "Some Enchanted Evening"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2369caf072648de94bae694d6fc7ca97293e958623fb015e5c81d13cd05cdd2. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM18600290 — a six-check JSON result.
"Libiamo, libiamo ne' lieti calici" from La Traviata
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54e36aedf72544cea7bf549621e23e32b41abd4d07ae4004c5cea8b743c3b004. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM10406026 — a six-check JSON result.
Hungarian State Radio and Television Orchestra
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92f39d06065a3dac04cfe5d918c51fc939d1555fac58b2bc7a4c098a32bd07e3. 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/USSM19907296 — a six-check JSON result.
"Non piangere Liù" from Act I of Turandot
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d6735cf9294c849a666970b86a421348e9e013a7584e304856a24b1d717b802. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/USSM10206889 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5f2fcb99fb60a3e2e0370ec867bb52ba02927ffab231d1cb00b1ffd8b3deadd. 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/USSM10604276 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb1d9e9264f23f822face899ed594658ca5f58d2b36fc6fa6431c41219367faa. 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/USSM10010311 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x862213ac24adc885e9c3058da804ae92a7037b779499b369ff3648db90c2be58. 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/GBLWD0908603 — a six-check JSON result.
Finest Music Selection: Famous Overtures