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 0xd24b4579b2eb41b9cff5d5be8a1174f928c7d55ce0d12eba5ef1f43aee691302. 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/f1d2bd81-199c-4e58-8944-88ecf814b926.json and https://artists.proofprofile.net/proofs/artist/f1d2bd81-199c-4e58-8944-88ecf814b926.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Weber & Franck: Sonatas for Flute & Piano
Brahms & Schumann: Transcriptions for Viola & Piano
12 Audiobiographies of Great Composers By Jörg Handstein (in German)
Russian Masterworks (The Best of Russian Classical Music)
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 0xee924de825c0ea8a6fe20544b71d9de67cd35ea402cc4931d3354cfbf3786fe7. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/HKI199707611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc585b2129f35f7b4f678b39056e92e7025a65eb76c36d6c8d86df142cadc79b. 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/HKI199316405.
Stravinsky: Oedipus Rex, Symphonies, Concertos, Ballets and other works
Shostakovich / Schnittke: Piano Quintets
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50b3f7d6cd18259f40ec0d071fad374dd8938dd823888f894a03d542c282929d. 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/HKI190020401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95088032dc1e82770cc9273ff63ce7d183b03b8a6c0bb7af60daa7c184159c15. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190020402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6f7d846e416e47700853ec24236e0f0f71cd93ca1b7bd34e548ed4243c28c2b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190020404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf20ec64d219c097ff4d6f05987b7e2d10069afa6896608fbf3f8f23e9c72f96d. 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/HKI190020405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d0fee68817537dc13c65cc86b6d13a42dd9d4af4de47a8f87317d4ebf31c245. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190020407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb483b479ad8cf0cd26e42f5d53f97d0d324bcb0f205ec32f498e13556a133c2e. 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/HKI190020411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbce776719a9f7f39f5afefc5ace87cf923e303d1a64834c45773788fdacfa30f. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/HKI190020403.
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 0x42a73e8d3e95a39b852c95eae5bf53ebb91e3b99b1c04f838412ec1599ec7c9c. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190020406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x619c9798a1ed2744ecbc5a5356b586a6a4181c067f3dc2be06e23d54df6b5545. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190020408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce572d1561e7c713913833a8c8a48f917ac7073f19371300da0ce4cd9bb2b634. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/HKI190020409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf594f66c8b5f73f3f8cd365b6790563d0744a2775f22034e5d057a69d0c114f0. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/HKI190020410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd337343262fc0db5019c44d7e1f19e3aae394a8bbf6d5fa670c887b51678c0fb. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190020412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x125f9f2c219098adcc8f87fbbf3f80bcd832e9db1e7eb85d73c74b13db9e1a0b. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190020414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1de2a598fad0e1e77ceb4ef503527ef4750f2be4e131157af532c28b885b22ce. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190020415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14a9eecc3385b5410cf3095dc84f6ab303a0f6131ade634f9af5df17d5c4f92e. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190020417.
Cage: Sonatas and Interludes for Prepared Piano
Prokofiev: Piano Sonata Nos. 5, 6 & 10 (Piano Music, Vol. 9)
Prokofiev: Sonata No. 9, Four Studies, Chose en soi & Divertissement
Stravinsky: Symphony of Psalms and other Orchestral Works
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2339a575a32f2239b35d468bee4f24bc5de1794c21e0471ab7a1198027652f50. 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/GBLWD9302001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x413c3d1cdbb006d5ecb84b4c7e3dc6c68755b322839fd4e9d6ddae84804cd61b. 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/GBLWD9302005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0baaba6ff880b8e30306d05eb8ca1eaa32a0a40e83e394a5fa20d5e6569fecf4. 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/GBLWD9302011.
Prokofiev: The Complete Piano Music, Vol. 7
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2848d4878a628f50896386e36a91a140cb6f4efb35d0d057f91a0065f877ae47. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLWD9806501.
Sonata No. 5, Op. 135 (Revised Version): I. Allegro tranquillo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77e95baa889df8997c3a0e2d81669044885d7a7430870abdf8ef2bc3aff26351. 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/GBLWD9806601.
Sonata No. 5, Op. 135 (Revised Version): II. Andantino
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd903e25ceb0ce481bb92ecf33e050a66a825509addccaf1ab8233531d252395. 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/GBLWD9806602.
Sonata No. 8, Op. 84: II. Andante sognando
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x493dda0d0b200503ee8485869be1868337adf3233d12259fd2bbc892b519e0fd. 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/GBLWD9806702.
Sonata No. 2, Op. 14: II. Scherzo. Allegro marcato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaa699862b96b8ba5b16e18059e4faf89d442f75543711a7b89015d19efe7b24. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLWD9806503.
Sonata No. 8, Op. 84: III. Vivace - Allegro ben marcato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc11a3d75d51bd53445d94514d4fd19beb7ab99f49078c7e61854e73f615560bf. 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/GBLWD9806703.
Sonata No. 6, Op. 82: I. Allegro moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64457921cab4b53f5f0db4e016a7cb46de04eb69d949e453606ba3e3a8c34229. 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/GBLWD9806604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbe1fc3dbee5153aa70c957050c03e20b5e3902601c0142a58b6b2e419c21d2e. 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/GBLWD9806704.
Sonata No. 2, Op. 14: IV. Vivace - Moderato - Vivace
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74ca3ba21c35ca5cc79434c5f767b66017cbeb046240bc53d35ec67b6a901947. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/GBLWD9806505.
Sonata No. 6, Op. 82: III. Tempo di valzer lentissimo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa27f026ed68c91279c9fbca88de585b1b37a8e3a7a8f61eb37a0c3ddf16e958b. 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/GBLWD9806606.
Sonata No. 4, Op. 29: I. Allegro molto sostenuto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad775437283c55ac1e2839debc2cd835de52d900ddd45074fb62f50b506c0e66. 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/GBLWD9806507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bbb58c8ac792dd89db7a26fd3637b7258b393ffb7b12aee50535fcdbdf2ca02. 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/GBLWD9806607.
Sonata No. 9, Op. 103: IV. Allegro con brio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51a1d873f61d988094670160b7306334767e8255c77ee47cdd99caaedf84dd45. 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/GBLWD9806707.
Sonata No. 7, Op. 83: I. Allegro inquieto - Andantino
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35a6baebf5244dfe44190b4e7b0143e8c205d9c1597f971864878767c044dcc2. 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/GBLWD9806608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4fea11d4a5cb19026ec877ff215b000a41444bff430683627fd8b8ff3c2411b. 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/GBLWD9806708.
Sonata No. 4, Op. 29: III. Allegro con brio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7fb27fffe463a9d1cd8acf6c98b9ff25e8d406a20c702d9fde98f4794c825fe. 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/GBLWD9806509.
Sonata No. 5, Op. 38 (Original Version): II. Andantino
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed9c388e593ebef592bcadb9460bf72d2485c823bc010f19b9086f4682319849. 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/GBLWD9806511.
Sonata No. 2, Op. 14: I. Allegro. ma non troppo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2636f13fab62e4ff66bcd64aa71c081d0e9dbe31644160b739ae46a19f54511. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T18:58:00Z), 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/GBLWD9806502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54973f8cae0071726f432253d4e0a8fe7a9a4f74592946120882b8d9a9df310b. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLWD9806701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb45291e06e71abd3aa341dce105e857ab286d1d7169089f5a0dcf3aad5bfa45. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLWD9806504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cb6317118b9e74ecb69605c6e93802ff8acbfeffa44356c85f15768de867b90. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLWD9806605.
Sonata No. 9, Op. 103: II. Allegro strepitoso - Andantino
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6591eff44daef01ba6c122e5ace6f673fd39539ef9384ab8efa27c8e2e80ab09. 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/GBLWD9806705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc105d78164566f7a15a128928f22eb21a9a1b728921ac5811f27ff323f0c610b. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLWD9806506.
Sonata No. 9, Op. 103: III. Andante tranquillo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1acacbbf0f8cb5a0eef9ae7c37fd45af96deca0e2aeb5fa5038451beaf3acb88. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLWD9806706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ce4c7ea4b554df323dc05d5856e7ff87d79016fc5213c643f2f5dfe40cbe848. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLWD9806508.
Sonata No. 7, Op. 83: II. Andante caloroso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc323071fc726322004df02e74d33f75d470c8873a5c3c2fea3cc5caea3c5a465. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLWD9806609.
Sonata No. 5, Op. 38 (Original Version): I. Allegro tranquillo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dc23e8f7693199103eb204d13f9e7e0ea216d3d793df2b4b570a5a84d16105c. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLWD9806510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04aefe013afe883bd1961f8cb3ed2e0b3edaa6c270640dc43b80744036baffb8. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/GBLWD9806610.
Sonata No. 5, Op. 38 (Original Version): III. Un poco allegretto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c8ac32f83ab9b2494f11d68eea3d6153325d16ad57a826b952cc02761df7353. 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/GBLWD9806512.
Prokofiev: Sonata No. 8, Four Pieces & Ten Pieces from Cinderella
Music for Children, Op. 65: XII. Sur les prés la lune se promène
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a275a246a52aea815ddcfd869daa49b90609e7ba78f101ef4ec43b315032e6b. 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/GBLWD9102315.
Sarcasms, Op. 17: III. Allegro precipitato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12643c44baec87aab1d8095febbd85e23783947fed54d5503a9beb41e3dc79b0. 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/GBLWD9010223.
Tales of an Old Grandmother, Op. 31: II. Andantino
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebbddca58157de8a0dce860deb2e4ff5c1de926a7b95d4b0ca2f5f3074e7e932. 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/GBLWD9010227.
Piano Sonata No. 7, Op. 83: I. Allegro inquieto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf31fbc798dcc1bfe06e831179f3ea02ec7715119a0b7270d12bfce670bfb2309. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLWD9010230.
Piano Sonata No. 7, Op. 83: III. Precipitato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x583957f52d1ebf42914c65ccf1efe90faadc9832760357c41f340bf786782ea9. 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/GBLWD9010232.
Visions Fugitives, Op. 22: I. Lentamente
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f9170e86879a5fef412415516c8066dae17eaaceb8a41f1810113a7630e5578. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLWD9010201.
Ten Pieces from Romeo and Juliet, Op. 75: VI. Montagues and Capulets
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfba5119c08f2aff4f222332ff1cdd139e56d807d1764fd0796f7bea22df4709f. 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/GBLWD9006515.
Piano Concerto No. 2 in G Minor, Op. 16: I. Andantino - Allegretto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eafa26bc812ed7995cc2915c7d8e76872d828a772a7b2091e4fa3875bca90e9. 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/GBLWD9010701.
Piano Concerto No. 3 in C Major, Op. 26: III. Allegro ma non troppo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33111e93222d900f8047c262bf184ad35f705e09c894893af288cf216105519b. 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/GBLWD9010707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eafa26bc812ed7995cc2915c7d8e76872d828a772a7b2091e4fa3875bca90e9. 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/GBLWD9010701.
Piano Concerto No. 1 in D-Flat Major, Op. 10: II. Andante assai
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb86073970d1be584f1c5b33ed3a21d205b6b04b57d8e71e51a698fb8ecc8736c. 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/GBLWD9003102.
Piano Concerto No. 1 in D-Flat Major, Op. 10: III. Allegro scherzando
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x482a332ab5de345e468439da3504ddc73f56dbcfc04f07bf298437594119f747. 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/GBLWD9003103.
Piano Concerto No. 4 in B-Flat Major, Op. 53, "For the Left Hand": III. Moderato - Allegro moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x884e0f171f636e6810ea17c5f563e7c70f3e6cb94f86114e267c66a4b4324d97. 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/GBLWD9003106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33111e93222d900f8047c262bf184ad35f705e09c894893af288cf216105519b. 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/GBLWD9010707.
Piano Concerto No. 5 in G Major, Op. 55: I. Allegro con brio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30112b900c71f6cf3038317ccaa5c84fdfc26b0bcec96e2b36a3942fbc5e3747. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/GBLWD9003108.
Piano Concerto No. 5 in G Major, Op. 55: II. Moderato ben accentuato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb428a5d75ed4f7c1ed72dc97f05ee6cf7305faf98ff323f0803b6e0eba0288a6. 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/GBLWD9003109.
Piano Concerto No. 5 in G Major, Op. 55: III. Toccata. Allegro con fuoco
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd075bd34ca40e9f108e065e4c2309613f892d2bda34054abb73eb8c257b876fa. 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/GBLWD9003110.
Piano Concerto No. 5 in G Major, Op. 55: IV. Larghetto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e4f5acba4726552840cca66e82c72d15ad6cdab9e315b687fac84af0acbe081. 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/GBLWD9003111.
Piano Concerto No. 1 in D-Flat Major, Op. 10: I. Allegro brioso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabb034bc204d38099d966e88f5885577ed294344d3fe53b83f1abf21eeb2647b. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLWD9003101.
Piano Concerto No. 4 in B-Flat Major, Op. 53, "For the Left Hand": I. Vivace
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdffe3c6c744bddbd71f70e6c3f3724c57e1504f4578f7b35e9199e61b2d8d81f. Chain 2 (Bitcoin): anchored in block 960157 (2026-07-29T22:12:10Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLWD9003104.
Piano Concerto No. 4 in B-Flat Major, Op. 53, "For the Left Hand": II. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13f7cc9023ca2597aa49add391779aeacb97d57f6e09d93022ff636d691f003f. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLWD9003105.
Piano Concerto No. 4 in B-Flat Major, Op. 53, "For the Left Hand": IV. Vivace
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x701e424b44c36cdf4671cc95ca5a989f0eef72650f20f9af46efae967a609ea8. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/GBLWD9003107.
Piano Concerto No. 5 in G Major, Op. 55: V. Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x063a7123ed1cfd7fdff6d95b0bb898da2ea5799a68e890d9e7d7c71ef712c9a9. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLWD9003112.
Prokofiev: Piano Concertos Nos. 1, 4 & 5
Highlights from a Remarkable 30-Year Recording Year
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b46b4476522dd6c872b2c343c33bd332d2b85ebbdba5f6beba903eed9e0e32c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLWD1207108.
Solitude (Arr. for Orchestra by Morton Gould)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb095ffe1cdf86bb4d9dde7324c6611db5d07eb933326afad256f1f43816b43bc. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLWD1207202.
Symphony No. 1 "Afro-American": III. Animato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbd2cd528ddc6b58f8270de5170884fdcb469f537af42bd4296811cc0061945f. 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/GBLWD1207205.
The Firebird, 1919 Suite, K10: VI. Finale - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91505cf5451c6e943e350e8cb17d837c7c723f8cb1169cc2510c88b852f105c7. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF058401092.