Mariam Batsashvili (born 1 June 1993) is a classical pianist from Georgia. Biography thumb|right|Mariam Batsashvili (right) and H.M. Queen Máxima of the Netherlands in 2014. Batsashvili started pl
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 0x58f326ef7007fda6ebb7fbea6f9849bf7033d150b516dc69b08a023aaf39049a. 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/bba2d8c4-4ee3-4239-a4b5-481cee7dcf20.json and https://artists.proofprofile.net/proofs/artist/bba2d8c4-4ee3-4239-a4b5-481cee7dcf20.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Early Transcriptions: Händel/Liszt, Marcello/Bach, Bach/Busoni, Mozart/Liszt
Early transcriptions: Händel/Liszt, Marcello/Bach, Bach/Busoni, Mozart/Liszt
Schubert: Waltz in G-Flat Major, D. Anh. I/14, 'Kupelwieser Walzer'
Schubert / Arr. Liszt: Ständchen, Serenade (After Schubert's 'Schwanengesang' D. 957)
Franck: / Transc. Bauer: Prélude, Fugue et Variation, Op. 18, CFF 30B (transcr. H. Bauer) – Prélude: Andantino
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 0xe53a84513b1bd8d08bf1f0f3fe1c91dec1b9cd719fb84c67435e6a14776e740c. 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/GBAYC2102813.
Franck: Prélude, Fugue et Variation, Op. 18, CFF 30B (transcr. H. Bauer) – IV. Variation: Andantino
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2167fd4af735560e6035c06329f238a1744217a2505e88a812d9c20b8e32988. 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/GBAYC2102815.
Liszt: Isoldens Liebestod, S. 447 (After Richard Wagner)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27d592af956c2a6b10b5e5740ca14801956c8aeb4adf367e552c6d2f350748ab. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/GBAYC2102817.
Liszt: Die Loreley, S. 532 (arr. F. Liszt)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71c8d305d0b6c8f0466779306a1ce116a1ae44fd9abb8f61b65ac94091938b80. 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/GBAYC2102818.
Liszt: Lieder aus Franz Schubert's "Schwanengesang", S. 560: No. 7 Ständchen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3decbf562683603c8049d541a5ab38a9f7d948047b1a8fccbdf3dac3fac8a615. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBAYC2102819.
Liszt: Lieder aus Franz Schubert's "Schwanengesang", S. 560: No. 3 Aufenthalt
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b837ab4fedbb1346b3bba820547358403a0b8cc18bc3a0c0acbe9ff11df459b. 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/GBAYC2102820.
Chopin: Valse No. 5 in A-Flat Major, Op. 42
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2960cfc1e8d6b26a8230e6b735b0cf5aad86244c40f5eba4b2f0b4e42e8a34ed. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC2102821.
Schubert: Waltz in G-Flat Major, D. Anh. I/14 "Kupelwieser Walzer"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80ee1a0ffd7950680b39d5f1efb4dce0a60dce6dc4c7ce75f3837123d541d2ea. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC2102824.
Thalberg: Grand Caprice sur des motifs de "La sonnambula" de V. Bellini, Op. 46
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7800d78709822c6659aefb7c12dba9295486c514d7a26a585308b90f3d07172a. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/GBAYC2102816.
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
Franck / Transc. Bauer: Prélude, Fugue et Variation Op. 18, CFF 30B (transcr. H. Bauer) – II. Lento + III. Fugue (Allegretto ma non troppo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e2b43b2e3a3d9beeda4dcba316db41d513df38794358467a206863ef872ded6. 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/GBAYC2102814.
Liszt: Valse de l'opéra "Faust", S. 407 (After Gonoud)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ab1f22eaaa5ac5151aa55049451aad136f1b4bc0634d7f795351a043a2ede36. 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/GBAYC2102822.
Liszt: 3 Caprices-Valses, S. 214: I. Valse de bravoure
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12c457abb0df5704100cede2605d8b024de436de55c9e50c3b46391dd82dc489. Chain 2 (Bitcoin): anchored in block 960145 (2026-07-29T21:13:37Z), 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/GBAYC2102823.
Chopin: Variations in A Major "Souvenir de Paganini"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d79372c1b84da63d395a5cdac7426e5fa46fcc94fd88147961af0eb919266d7. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/GBAYC2400046.
Rossini: Péchés de vieillesse, Vol. 10 "Miscellanée pour piano": No. 6, Petit caprice (Style Offenbach)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa7d6b458a05c916ab349e888bf3550091a5a29d18da058d4f809969f73e9ca4. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/GBAYC2400047.
Paderewski: 6 Humoresques de concert, Op. 14, Cahier I "À l'antique": No. 1, Menuet célèbre
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31db97a5f8db7280c820ca82fa36303eb0e97a907442d13f6bc3ca6b0a08993b. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:11:03Z), 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/GBAYC2400048.
Liszt: Grandes études de Paganini, S. 141: No. 4 in E Major
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6de9db891021a62c5c95e0c147706ca3cdc3c7f80199c92f6b805fe9fde4952c. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GBAYC2400049.
Haydn: Keyboard Sonata in D Major, Hob. XVI:37: II. Largo e sostenuto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5997f681a88ee32d808eba4315f432fddef4505f5f1e61f6a6f4db1b20370f5. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-20T00:03:27Z), 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/GBAYC2401948.
Haydn: Keyboard Sonata in D Major, Hob. XVI:37: III. Finale. Presto ma non troppo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12f76f6db75c004d377ce0475e9f642ba4472a7ea41913b213464ddb73f87e3f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBAYC2401949.
Mozart: Piano Sonata No. 18 in D Major, K. 576 "The Hunt": I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb05814a55da7ca5c1dfec3404743bec2e0b73070442f046d08577f1571464d03. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/GBAYC2401950.
Mozart: Piano Sonata No. 18 in D Major, K. 576 "The Hunt": III. Allegretto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4c55a705b2f22accd793107f05e898afb9157e8212af5e4b519dd8e62eddf83. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/GBAYC2401952.
Beethoven: Piano Sonata No. 23 in F Minor, Op. 57 "Appassionata": II. Andante con moto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cb738777e1bd81c28aaaf4c0d6f55dbced99727f3af279dea48457a8929d48e. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T09:23:20Z), 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/GBAYC2401954.
Svoboda: Drei Haselnüsse für Aschenbrödel
Nocturne No. 20 in C-Sharp Minor, Op. Posth
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a725374af4f7853a90201e4553f39246734a83d2921f880979a938cad2da485. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC2203304.
Consolations, S. 172: III. Lento placido
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbc3a538ea1573f92c9dca232824deb5e879e0091ca4cfb0dea27fdeb5ce402a. 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/GBAYC1900263.
Prélude, Fugue et Variation, Op. 18: I. Prélude. Andantino
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe53a84513b1bd8d08bf1f0f3fe1c91dec1b9cd719fb84c67435e6a14776e740c. 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/GBAYC2102813.
Lieder aus Franz Schubert's "Schwanengesang", S. 560: No. 7, Ständchen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3decbf562683603c8049d541a5ab38a9f7d948047b1a8fccbdf3dac3fac8a615. 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/GBAYC2102819.
Dvořák: Slavonic Dances, Op. 72, B. 145: No. 2 in E Minor, Allegretto grazioso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd06c11efa3b2523e5bee82ca230b82a238475635a5e7ef82411e2afa67dba21a. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBAYC2302546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbc3a538ea1573f92c9dca232824deb5e879e0091ca4cfb0dea27fdeb5ce402a. 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/GBAYC1900263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe53a84513b1bd8d08bf1f0f3fe1c91dec1b9cd719fb84c67435e6a14776e740c. 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/GBAYC2102813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3decbf562683603c8049d541a5ab38a9f7d948047b1a8fccbdf3dac3fac8a615. 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/GBAYC2102819.