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 0xb5f2f300636e8c6ca0bace2d2375794fbd9d9bd1a22235dac40ec450f44ac02e. Chain 2 (Bitcoin): anchored in block 953645 (2026-06-14T14:31:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3ee8c391-cb2e-4a8d-a80e-db6b94ff1673.json and https://artists.proofprofile.net/proofs/artist/3ee8c391-cb2e-4a8d-a80e-db6b94ff1673.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Richter: Recomposed: Vivaldi's Four Seasons
Recomposed: Vivaldi - The Four Seasons: Spring 0
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 0x7af49178bfb2ba2d778f8b8a37ab59c5cec5fa92e749537919c0e9d93751f6a2. 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/NLB152400153 — a six-check JSON result.
Recomposed: Vivaldi - The Four Seasons: Spring 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeac90ad9ff234eebe4c2b604770803c7e10149aebd02fc2af894b413f6bdc82a. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLB152400154 — a six-check JSON result.
Recomposed: Vivaldi - The Four Seasons: Spring 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e3d0bbbd7250f7ebbd68072594d04f0802196529139cf2414eca8ef55274447. 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/NLB152400155 — a six-check JSON result.
Recomposed: Vivaldi - The Four Seasons: Spring 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e2faa64ab6a71b53ce0d549dddeca26a48aa6e09ad6cac02e2908b1d3a5850f. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/NLB152400156 — a six-check JSON result.
Recomposed: Vivaldi - The Four Seasons: Summer 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eb98e0bf671c1f22e4926312a32803482e00e16f3e3df9e4a272db442f91caa. Chain 2 (Bitcoin): anchored in block 960218 (2026-07-30T06:57:05Z), 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/NLB152400157 — a six-check JSON result.
Recomposed: Vivaldi - The Four Seasons: Summer 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc58161686ce4484838467ea84ffd8c6dfc6adae568f63bdccd70332fcaf1b8c2. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/NLB152400158 — a six-check JSON result.
Recomposed: Vivaldi - The Four Seasons: Summer 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8218e8ce7f37aca0c2dc984c4cde22b8872d14ca599a4023b6479ebe7f5347f4. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/NLB152400159 — a six-check JSON result.
Recomposed: Vivaldi - The Four Seasons: Autumn 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cdce32a1a55739730a6eecbc45134fa24d225b31012843c5e0c303eccf7efdf. 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/NLB152400161 — a six-check JSON result.
Recomposed: Vivaldi - The Four Seasons: Autumn 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f5ef375c30c9d697163409b27f87d03747e99e8a0d93d4b297e58a11d4ef451. 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/NLB152400162 — a six-check JSON result.
Recomposed: Vivaldi - The Four Seasons: Autumn 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82b96a10b2ce51b88217c5d1d1f5aa545b71ff7c1adc2082a98eafbd04346117. 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/NLB152400163 — a six-check JSON result.
Recomposed: Vivaldi - The Four Seasons: Winter 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d6cdc46b5380c5e05f08de9dfcfdaa35c8a7be258522d80519fdbe0e9fd651b. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/NLB152400164 — a six-check JSON result.
Recomposed: Vivaldi - The Four Seasons: Winter 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70a78636ab1d55b755532f30b490c25e6912a03ddb5688c206080680d7d0d2bb. 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/NLB152400165 — a six-check JSON result.
Recomposed: Vivaldi - The Four Seasons: Winter 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x760892d6308c63b9ec91924cc4cb5ff5fb3144fe4e43a3b36ea0733ffa068a71. 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/NLB152400189 — a six-check JSON result.
Violin Concerto “Distant light” (1996/7): Andante I
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48570c64bca5f922c302ecbe4a9bbe96ad9b4dd1c3c02c2e91f647767ed6c558. 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/NLB152000398 — a six-check JSON result.
Violin Concerto “Distant light” (1996/7): Cadenza I
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1323172aec2bd83c82a9cd5b4e4e840fb04b662f5dfa8d1bab7a8022e27470ab. 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/NLB152000399 — a six-check JSON result.
Violin Concerto “Distant light” (1996/7): Cantabile I
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9c446d3f8cab743ed1bed594435a19a9fa2aa4d1b3765d3fa0ef8568e965999. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/NLB152000400 — a six-check JSON result.
Violin Concerto “Distant light” (1996/7): Mosso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb4fc1a0740b0263d4ad3cc065db394b2466d5c3f5b497e3c4a93385aac1b88a. 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/NLB152000401 — a six-check JSON result.
Violin Concerto “Distant light” (1996/7): Cadenza II
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84687d76a2e7e16da5a77821e408999637066dc2ff4955b4f5e7d982168b8a66. 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/NLB152000421 — a six-check JSON result.
Violin Concerto “Distant light” (1996/7): Cantabile II
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdac1b7ab0a6b3fd22d82f3ce67cad969cf7296cbfa0db0aef338c62365b733f4. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/NLB152000422 — a six-check JSON result.
Violin Concerto “Distant light” (1996/7): Cadenza III
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x204c4ea64c361658b58f37667fbaebb65228243d36aebaf7f67e0ed954e206f3. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLB152000423 — a six-check JSON result.
Violin Concerto “Distant light” (1996/7): Andante II
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bec41b14f813e1c5bbaa430449800eb8d9d5f22a21ab977271b4a3431e9dae5. 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/NLB152000424 — a six-check JSON result.
“Lonely angel”, meditation for violin and strings (1999, rev. 2006)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6a4e9641c775ce3a168149ccff3e2b0f72999df329daa69efbc86da3b54cca3. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLB152000425 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf511cfb1c97c5382d095eab6dc3b58ad6015b20a585209ba6d945ad6856cdb00. 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/NLB152000426 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ee562b7355583c969edff03928ab3c5802ff269a02e8e919dd9247497d4faf6. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/NLB152000427 — a six-check JSON result.
Paganini: Complete Quartets for String Trio and Guitar Vol. 1
Quartet No. 4, (Op. 5 No. 1) M.S.31: I. Presto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x263ae5eca35ab22567c6f6f0d91b01ed091529643bcccb9997756621e1be4301. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY332203512 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c77aeceaf5ac00424f666635797a496a5beb4bf0b7e2fa64dfac0092c623d75. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ATTE41501319 — a six-check JSON result.
Hombre Tango: The Music of Marcelo Nisinman
Sawyers: Double Concerto for Violin & Cello
10 Preludes for Guitar, Op. 10 (1980): I. Moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46ac8e3f5d375ca705fc0ab4e274e4bfb1a8c24fe017adb65c2e42b12a7338f9. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/NLY332400656 — a six-check JSON result.
10 Preludes for Guitar, Op. 10 (1980): III. Andante ben tenero e senza Rigore
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a4e826fe1a2132d22e6e3ea6e12f48e4932c36d5a729afbc889f646eef8c3c4. 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/NLY332400658 — a six-check JSON result.
Vignettes, Op. 3 No. 2bis for Guitar (Ca.2000): I. No. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x201bd46f2af4f56e4e9bb4a0b5251ac2f21e05ed6982bf5b4d6fa1453834545c. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/NLY332400669 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09993f525385b77f092f60f6bf873e758c6e85bc1ef737dd9a27a67e4fe95283. 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/NLY332400676 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2168e7992344a4801a6e0e287cd457a1703bfdf2d3036af25d53008c3d107e01. 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/NLY332402251 — a six-check JSON result.
Three Curious Loves (Concerto for Violin and Orchestra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6451fd1693489fdc43a2279ecd9bef16c7ad8c02df520bf7b967256994576533. 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/NLB152400706 — a six-check JSON result.
The Cherry Orchard (Theme with Variations for Piano Quartet)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe4279ff85602828b02f5a909ae065f0d044ac7b31533bfb1325bc99657bfaae. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLB152400713 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51726784b3a2f2cc269f96f07b909122134ddf453a36ae1ac8f91a66307f5952. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/NLB152200890 — a six-check JSON result.
Post Scriptum, Sonata for Violin and Piano: I. Largo - Allegro - Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed4f3880ea98af6b0dd255023057bce23a81e40e99a4cf32f19f22803baa36db. 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/NLB152200891 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58a5b16eaabdb1169e5db574a501b79a25e22cc0250f35a49c68e3997d36aa2f. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/NLB152200894 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecf2e45122c4519272e4d0899bffc6c37dfec484f7cfc1d9549b8d28d3832776. 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/NLB152200896 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8655d78ba49ab7b67a560f437559257dce2697bac727abd53ffd6b07ad2a4896. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLB152200903 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x786e958f6f1e56ca024674b2d71febd108ec99d36ce7d6ff25952151ac147ecc. 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/NLB152200905 — a six-check JSON result.
A French Connection: Chausson, Debussy, Franck
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf992b82bbcf843bcb2b071d66da93ed22f1d481726093ac2c2401a8e4c8eb416. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/NLB152100480 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3825688e5706ca20f7019085931d392ab5bf503620b89c2f19df08b5300c526. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/NLB152100483 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d6fcd5b5ad318f4f7a87398314703ae47e4d6eb2a49d3b37be4af8b5e654729. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLB152100487 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ef41419f55cdc97a2cef661ca46c611da4fa34e6de4f711f695e2467ead16fb. 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/NLB152000138 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3692b845f84a106b9d469ef4fe828073d308d6c6618222b073bf594d019a5a37. 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/NLB152000149 — a six-check JSON result.
Violin Sonata No. 3 in A Minor, Op. 25 'dans le caractère populaire roumain': III. Allegro con brio, ma non troppo mosso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45873201672f37104e23676592b012c1735fb822ea1143908c4f710004b723b5. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GB4ZK1600140 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd50dfffdbf3c51cee131784f8b7ba5d4daa2ffe3b13b5878b07973dc060fada7. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLB152400709 — a six-check JSON result.
Richter: Recomposed: Vivaldi - The Four Seasons: Winter 1
Richter: Recomposed: Vivaldi - The Four Seasons: Spring 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e2faa64ab6a71b53ce0d549dddeca26a48aa6e09ad6cac02e2908b1d3a5850f. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLB152400156 — a six-check JSON result.
Richter: Recomposed: Vivaldi - The Four Seasons: Summer 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8218e8ce7f37aca0c2dc984c4cde22b8872d14ca599a4023b6479ebe7f5347f4. 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/NLB152400159 — a six-check JSON result.
Concerto for Viola & Orchestra: III. Allegro moderato
Double Concerto for Violin & Cello: I. Allegro moderato