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 0xcd1773a105f8bc258674d379a5af5895886a13a36e17eb96f96ce253b1d08420. 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/afe243a8-0eba-44cf-8d07-a7608a8b3fc5.json and https://artists.proofprofile.net/proofs/artist/afe243a8-0eba-44cf-8d07-a7608a8b3fc5.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Kancheli: A Little Daneliade, Valse Boston, 18 Miniatures & Largo & Allegro
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 0xd05f5a08f7c88b16e7933166c0e921499ca23010e9c3aa911fb5de37ddf405ee. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/DEB262300201 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c7c4dd02169e13e3e77034272f147d5a8993e62486c80f532f9bcb4c456d7a9. 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/DEB262300202 — a six-check JSON result.
18 Miniatures for Violin & Piano: No. 1, Lontano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe79d805a5a3b6c307c4cc0f3360f905d15be5fa3492c60303374bf705e8209f0. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/DEB262300203 — a six-check JSON result.
18 Miniatures for Violin & Piano: No. 3, Cantabile, rubato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x708164cdcf6b90d1e9cf2da67bca6b94f6c4adc803d602939c3cf7b4fbb7b4b9. 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/DEB262300204 — a six-check JSON result.
18 Miniatures for Violin & Piano: No. 7, Cantabile grazioso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa64ca33aeb69f50371bf634aa02b55dba20516f53abf034e71326974a82bfd2. 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/DEB262300205 — a six-check JSON result.
18 Miniatures for Violin & Piano: No. 8, Dolce
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x798e72d0afa807ded67c87e17161798b60633ccc203a2937f6035f7961c91697. 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/DEB262300206 — a six-check JSON result.
18 Miniatures for Violin & Piano: No. 9, Dolcissimo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x504954350dbce6aadff2880bf3c9a35048292eb4dc3099421f44b7230ef17b9d. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB262300207 — a six-check JSON result.
18 Miniatures for Violin & Piano: No. 10, Sostenuto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8416ac960f18d79eb71812a12632074bf04238fa5207b6add3631b80498dcb21. 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/DEB262300208 — a six-check JSON result.
18 Miniatures for Violin & Piano: No. 12, Quasi recitando
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7a558e5d2272e55b4d5b8051bf4a05e16bb9c0bd17e0e133edd3eaa6dbe9e4c. 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/DEB262300209 — a six-check JSON result.
18 Miniatures for Violin & Piano: No. 17, Dolcissimo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc25de44b3e203c8da06604f6e079b1bd126a11ab3c075925e3a0e056850c6b8a. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/DEB262300210 — a six-check JSON result.
18 Miniatures for Violin & Piano: No. 18, Dolce
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb4c67d35bc3b41c4bffe20e9048de4e55ba05f7814ba3e706eaf531dbc96159. 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/DEB262300211 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd74a5d9ff1eac03ff57c0a04b52320ea642d5c541d229576629704ad0a2a89e9. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB262300212 — a six-check JSON result.
Children's Album, Op. 41 (Excerpts): No. 22, Thoughtful Waltz
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88f8ef237e6e78e437591d653de2186f9c4be12f69aa518519e4633f7db9e21e. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/HKI192103020 — a six-check JSON result.
Weinberg: Piano Quintet, Op. 18 & Children’s Notebook No. 3, Op. 23
Frid: Phädra, Op. 78 & Piano Quintet, Op. 72
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccf454a5e035a89125be960407e23c96693e462afa34bc540db652f1a4e55bfb. 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/IEDGB1300001 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x283bcfa8af9324577e70da0512bbb16cb3794b571bdc350fde7cee2e7551cd50. 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/IEDGB1300002 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79d43ede909565ee52a16090a01da6786cdd6ffd083bdb4e0514c0b8e1b15188. 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/IEDGB1300003 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x716e989e1d324f4015bb51ab9897286c9291d7deefc3efbf2520b4ffcc3b4734. 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/IEDGB1300004 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ca071783e283a8d174f95f9ea677d303cf9fdd6c4d9fc4503de63e38b693e0c. 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/IEDGB1300005 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe93941c8126a1a9e648ce1ba2ec51bab5313f1e6513ee9ff6f73cec3b3a94818. 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/IEDGB1300006 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd61b4b29eb466afdb29d6eb77831de0106d48d9e526e91ddfa549dad64251561. 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/IEDGB1300010 — a six-check JSON result.
Weinberg: Piano Quintet, Op. 18 (Arr. M. Baier for Orchestra) & Children's Notebook
Mieczyslaw Weinberg: Sinfonie No. 6, Op. 79
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b0523128234af3261a24c1ecfef3a0694371c665bd05cc5e1c53612a6d97480. 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/DEFU71912001 — a six-check JSON result.
33 Miniatures for Piano (Excerpts): No. 1, Calando
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14b6c678ce7073793be22bc838f4b2c9d30219d7e798b9022f4b7ae07e086932. 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/DEFU71912028 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60b4c0eaa623fc8f4602779f889368500fb94c268225713e080bde052b78dba6. 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/DEFU71912002 — a six-check JSON result.
33 Miniatures for Piano (Excerpts): No. 2, Lontano, molto rubato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18f974278880910ff6774905a9c79583ab0553e577c85e7ae5ccdbbdf61bf7a9. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/DEFU71912029 — a six-check JSON result.
33 Miniatures for Piano (Excerpts): No. 3, Pastoso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62f7260f8c46b80df2b48843b3661a482bbed72fcf240f1a2fa9f4195f47e3d2. 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/DEFU71912030 — a six-check JSON result.
5 Préludes, Op. 16: No. 3, Andante cantabile
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca770353a04ee1bf4587af7feeb8fe3b6be7c9542430f1b9317aeeadcbac096d. 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/DEFU71912003 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b7438166e052e2b0b98b4f84a813e71cfcba3e47fd06878e4f525494c94675b. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/DEFU71912004 — a six-check JSON result.
33 Miniatures for Piano (Excerpts): No. 5, Quasi recitando
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7144c63acf193927ae29cd14c4d198ef4398f4acd2af683a41ec5b2bccc078b. 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/DEFU71912032 — a six-check JSON result.
Visions Fugitives, Op. 22 (Excerpts): No. 1, Lentamente
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ebffcf0d37cb8a9c39f56bd9222a372fd97a678933b82abfdf129f2b9e024ee. 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/DEFU71912006 — a six-check JSON result.
33 Miniatures for Piano (Excerpts): No. 12, Luminoso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4e18e9e0f824436351673497588c4a055ff13d9ab7c166d00c6b462f81df72f. 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/DEFU71912036 — a six-check JSON result.
33 Miniatures for Piano (Excerpts): No. 14, Con eleganza
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x154f6551501f35dad31e81f2600eef635ab2b3b89903415fe7cd2d04ad2e0807. 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/DEFU71912038 — a six-check JSON result.
33 Miniatures for Piano (Excerpts): No. 16, Calmo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x491161270874082ddbaaf46ae5498db72c891d1b18d179bd6f89f573c7701a55. 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/DEFU71912040 — a six-check JSON result.
33 Miniatures for Piano (Excerpts): No. 22, Grazioso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4a7d1ea3e646a377bf225de2f084fd43558c0a96b2f42685188862d99a609e9. 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/DEFU71912043 — a six-check JSON result.
33 Miniatures for Piano (Excerpts): No. 23, Cantabile, lontanissimo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bd70f4406571820d11cf2810994eceb8d9e1da9d8c55d20378de4b8d5aba618. 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/DEFU71912044 — a six-check JSON result.
33 Miniatures for Piano (Excerpts): No. 30, Dolcissimo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed2744238ae295cb55fa7eaae9340933ed6b69d2f2751101b48844ceb208d934. 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/DEFU71912048 — a six-check JSON result.
33 Miniatures for Piano (Excerpts): No. 32, Sostenuto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a1d9628db6e37dbbb74e92df315a90c5a703d7f650c78609dd744ae9b15538c. 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/DEFU71912049 — a six-check JSON result.
Weinberg: Piano Sonatas, Opp. 8, 49bis & 56
Ustvolskaya, Silvestrov & Kancheli: Works for Piano & Orchestra
Concerto for Piano, Strings and Timpani (original version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29392f5494c06196f26a4af5f86e1cc740556a4e99f95d7b9ec46e3f14c80da4. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/HKI191535301 — a six-check JSON result.
4 Postludes for Piano & String Orchestra: No. 1. Larghetto - Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc3fce350703dee0b219ccbe983a1764d3a1421f594e93d76e48385a4c035702. 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/HKI191535302 — a six-check JSON result.
4 Postludes for Piano & String Orchestra: No. 2. Moderato, con moto (poco rubato)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27b827da0c91342fd3ebaefd9116e45c7286c10f98af0f25d6a9db4df126c56c. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/HKI191535303 — a six-check JSON result.
4 Postludes for Piano & String Orchestra: No. 3. Larghetto, con moto (poco rubato)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc73e3d40210888dfc2d1ae052f6ec08285fef4ca0cafd4ba14863b49666754fd. 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/HKI191535304 — a six-check JSON result.
4 Postludes for Piano & String Orchestra: No. 4. Larghetto, con moto (poco rubato)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc27a8f32ad4ee488dc96b707b4a2b4b46b0d470a03fbf253f397ca67115a31e. 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/HKI191535305 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6dcac9daf05ab248a57027e269aafe9bcc606f55ff1ea1dc3ca02edcb35dbe5. Chain 2 (Bitcoin): anchored in block 960407 (2026-07-31T13:26:30Z), 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/HKI191535306 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bbdd644ab31b37bac3e6b77545ee8b7a116cbbacbb74263c83a27f05151a967. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/HKI191535307 — a six-check JSON result.
Weinberg: Piano Trio - Violin Sonatina - Double Bass Sonata
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff3bb58ed190d40ef1840dafff1bd9c2a8d63690fb59271b15799e736659e35f. 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/HKI191249002 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea6da45ac25f949f1eeb3cf1b6272fcb53a527eccb6e61d41ec63010dfb2cd9c. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/HKI191249003 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96e1e727a651aec69a02bfb85cbd04dcb33a4fbfbfb7bf20bfcecdaa4f15bb4e. 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/HKI191249004 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x023a89a670038a5ac72c469633b1898f37e7effabfd3fc85f98146c7ba87983c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/HKI191249005 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf9bb3af8a4dda49b8ccbb27bf90e1c85fc51fb7a882245725fc2798a693b295. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/HKI191249006 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15e7082bef67b300138f761f28ed01744b7c0ccbd5d38314de70676163f9f2e2. 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/HKI191249007 — a six-check JSON result.
The Messenger - 1996 (version for piano): Der Bote - 1996 (The Messenger - 1996) (version for piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e05db420cc724aff9d30d77af4e61674a9bd80298cfd0c156d16c1e7632172f. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/HKI191249008 — a six-check JSON result.
2 Waltzes, Op. 153: No. 1. Allegro assai
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0598250f0e7d7248179c12254ad497b56fccce345244b078d6cdcc7efb58005c. 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/HKI191249010 — a six-check JSON result.
4 Pieces, Op. 2: No. 1. Lullaby: Moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8925f58ac9283db90667772699b8437dddf11b22739e3e07daac87c580a7a2d. 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/HKI191249011 — a six-check JSON result.
4 Pieces, Op. 2: No. 2. Pastorale: Vivace
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4 Pieces, Op. 2: No. 3. Bagatelle: Moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7f69b26764814a8f53aa0356f6a082ff79983f595fbde595feb76b20efd8d74. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/HKI191249013 — a six-check JSON result.
4 Pieces, Op. 2: No. 4. Postludium: Moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1335c4a53662bb33363778be9f123be5808e7dfcde808f89ee54303b04175e2. 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/HKI191249014 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x785257d881182d552771a2618f628f0d7fc0804204422bfab38dd170972a42e7. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/HKI191249015 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b9444889e99cb228fa66556f6b82b436dc7c7f57be9c25d4c7323c9f776ecbb. 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/HKI191249016 — a six-check JSON result.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3cd5b4aa366c797ba78b6889281fed54c137a6a9796a3fa1d6408d30edc7691. 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/HKI191249018 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x663e1e385c717766555cd52489a6121420f998351fb1ae8e36cd214b5601baa9. 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/HKI191249019 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8da08a32849f572e11248f09eed1f4b6d9645681688ef32217f012a20cc9ef6d. 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/HKI191249020 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e3fbdec240fe26b30195596af2e3d2c44aee6452140d2e1d1b08b9c5eac9e74. 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/HKI191249021 — a six-check JSON result.
Weinberg: Children's Notebooks / Piano Sonata No. 1
Elisaveta Blumina, Piano plays Schubert, Tchaikovsky and Prokofiev (Portrait)
Gija Kancheli: A Little Daneliade (Single) [HD]