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 0xd3c340aaf75cdc872d770381f9096d42d057a80180ef214c42e2c5a37ecb2559. Chain 2 (Bitcoin): anchored in block 953704 (2026-06-14T22:58:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7af2339d-5d07-473c-8df2-826d219033a6.json and https://artists.proofprofile.net/proofs/artist/7af2339d-5d07-473c-8df2-826d219033a6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Land of A Thousand Lakes - The Beauty of Finnish National Romanticism: Music of Sibelius / Kaski / Melartin / Merkanto / Jarnefelt / Klami
Land of the Midnight Sun - Music and Images From Finland
5 Christmas Songs, Op. 1: No. 5. On hanget korkeat nietokset (High are the snowdrifts)
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 0xf0ecc8927ef6cfe9b5cfd059cb8b1734ea70350d8f6ad91e81fa1bb2210ab1f5. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/FINDE9600130.
Vivaldi: The Four Seasons / Violin Concerto In A Minor
The 4 Seasons: Violin Concerto In E Major, Op. 8, No. 1, RV 269, "La Primavera" (Spring): I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x531ec9a2ef012b4860fc55e29bd61b66689a61fb8b838f0d4be3b7aa2785c26f. 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/FINDE9900009.
The 4 Seasons: Violin Concerto In E Major, Op. 8, No. 1, Rv 269, "La Primavera" (Spring): III. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bdd9dc2d7a438f435a26250e2928389ebe83cd2a6244dd57ac434bf658fc0c1. 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/FINDE9900011.
The 4 Seasons: Violin Concerto In G Minor, Op. 8, No. 2, RV 315, "L'estate" (Summer): III. Presto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01931128bd458d713cd8939e0549d2ea860e7fc91bc1ccace9428466d05b67a2. 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/FINDE9900014.
The 4 Seasons: Violin Concerto In F Major, Op. 8, No. 3, RV 293, "L'autunno" (Autumn): I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2e44e3630ec9d43050b6fcf229956724cd7b8f2b15714ad8723d902de962627. 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/FINDE9900015.
The 4 Seasons: Violin Concerto In F Major, Op. 8, No. 3, RV 293, "L'autunno" (Autumn): III. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56cc73c5fd5c0f54efc9b2ad188693ccd12d26bb928c797f1fdac32a0cf9c7a0. 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/FINDE9900017.
The 4 Seasons: Violin Concerto In F Minor, Op. 8, No. 4, RV 297, "L'inverno" (Winter): II. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dffc76b66f37109c47465f9f0fa24358ad29fd90accc9c9198a67f8aa338c46. 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/FINDE9900019.
Violin Concerto In A Minor, Op. 3, No. 6, RV 356: I. Allegro Moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ba368f35a72f847d073b0d473c5b734ecb4993f98d6487265444c5a4a336142. 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/FINDE9900021.
Violin Concerto In A Minor, Op. 3, No. 6, RV 356: III. Presto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2dfe8efaaf3c961e6a2bd261550bcb82491128802da0917d91a2fbbb7c85ecb. 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/FINDE9900023.
The 4 Seasons: Violin Concerto In E Major, Op. 8, No. 1, RV 269, "La Primavera" (Spring): II. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf48fdca0016afd77993fac0c082524fd56f448b11163ab46c4f7f3c1a09e8533. 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/FINDE9900010.
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 4 Seasons: Violin Concerto In G Minor, Op. 8, No. 2, RV 315, "L'estate" (Summer) I. Allegro Non Molto - Allegro - :
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x620be8ed0950d75e12a9488a9d180d366709f42fc66822b41f11157ba10167c1. 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/FINDE9900012.
The 4 Seasons: Violin Concerto In G Minor, Op. 8, No. 2, RV 315, "L'estate" (Summer): II. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b868b7adba0ddb8a94c39ab9e51c3c459a014c912081ac70de4d31bce877063. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/FINDE9900013.
The 4 Seasons: Violin Concerto In F Major, Op. 8, No. 3, RV 293, "L'autunno" (Autumn): II. Adagio Molto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9231165896cdc0f7defdedc798326963631b5ac32dde746995097bf90babe83d. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/FINDE9900016.
The 4 Seasons: Violin Concerto In F Minor, Op. 8, No. 4, RV 297, "L'inverno" (Winter): I. Allegro Non Molto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x340281ae5ce7fca097ad1e032ca4a1c51eab83c58da2863bf13bac918b8499fb. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/FINDE9900018.
The 4 Seasons: Violin Concerto In F Minor, Op. 8, No. 4, RV 297, "L'inverno" (Winter): III. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b1a1255530ba5c8aa798dcd96d659dc02610888fbab05e14f75c8b3654ea55a. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FINDE9900020.
Violin Concerto In A Minor, Op. 3, No. 6, RV 356: II. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62a08b546b3423811493ab34bc260cebb1b4cb55fcb58dcdd7fdfb94bbe806c7. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/FINDE9900022.
Sallinen: Chamber Music Iii, Vi and V / Introduction and Tango Overture / Elegy for Sebastian Knight
Vivaldi, A.: Four Seasons (The) / Violin Concerto in A Minor
Bartok, B.: Divertimento / Romanian Folk Dances / Rozsa, M: Concerto for Strings
Tchaikovsky, P.I.: Souvenir De Florence / Janacek, L.: Suite for String Orchestra (Virtuosi Di Kuhmo)
Sibelius, J.: String Orchestra Music (Virtuosi Di Kuhmo)
6 Impromptus, Op. 5: Nos. 5 and 6 (arr. for string orchestra): Impromptu (version for string orchestra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fdf7903b06d53c9b8666cb1b34e185cccf3868bf60044b42411ec2e8f75c37b. 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/FINDE9400029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee8e0c0fc37a582df5ab40f0da5ac4819538458d8e4702422196cf0fc0894bfc. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/FINDE9400040.
Prinsessa Ruusunen (Sleeping Beauty) Suite No. 1, Op. 22: VI. Haamarssi (Festive March)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x127344ec58b9d1e761eeed2b2d10ff4be82632f33fb69b4ceebaa4943cf59037. 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/FINDE9400020.
Mendelssohn, Felix / Haydn, F.J.: Concertos for Violin, Piano and String Orchestra
Haydn, J.: Violin Concertos, Hob.Viia:1, 3, 4
Mendelssohn - Haydn: Concertos for Violin, Piano and String Orchestra
Schnittke, A.: Piano Concerto / Violin Concerto No. 3 / Violin Sonata No. 3
The Four Seasons, Violin Concerto in F Major, Op. 8 No. 3, RV 293 "Autumn": I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfca8419561ff89f1796c1600a26e64d18b6a3eef5b69166f8f14b22aafca1603. 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/USB8U1612670.
The Four Seasons, Violin Concerto in F Major, Op. 8 No. 3, RV 293 "Autumn": II. Adagio molto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x184346ffe65b0fefc4227570925e07ee099a60881d9c27ebd0ea86d18fadf39b. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USB8U1612671.
The 4 Seasons: Violin Concerto in E Major, Op. 8, No. 1, RV 269, "La primavera" (Spring): I. Allegro
Vivaldi, A.: 4 Seasons (The) / Violin Concerto in A Minor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x531ec9a2ef012b4860fc55e29bd61b66689a61fb8b838f0d4be3b7aa2785c26f. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FINDE9900009.
The Four Seasons, Violin Concerto in F Major, Op. 8 No. 3, RV 293 "Autumn": III. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x396b68b0f3890f00390b1c7ce08b42d4e8db1dffb4f3c4b32769b41e27318426. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/USB8U1612672.