thumb||269x269px Sviatoslav Teofilovich Richter ( – August 1, 1997) was a Soviet and Russian classical pianist. He is regarded as one of the greatest pianists of all time,Time. Francis Merson, "The 10
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 0xcca5db3dbeb9c9fdfcf8443ad28092f2f8bf1211945f239df644d0893c081f8c. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9a9efccb-dc9e-4746-93e8-97dd97dbcae3.json and https://artists.proofprofile.net/proofs/artist/9a9efccb-dc9e-4746-93e8-97dd97dbcae3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sviatolsav Richter plays Russian Composers
Richter Archives, Vol. 22: Beethoven (Live)
Beethoven: Piano Sonatas, Piano Concerto No. 3, 8 Bagatelles & Choral Fantasy
Edvard Grieg & Antonín Dvořák: Piano Concertos
Piano Sonata No. 2 in G-Sharp Minor, Op. 19 "Sonata Fantasy": I. Andante
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 0x7dc42d6d8d745f1f1302efe6cb6a4841ea760e6505bd361f41e29384b5e8e978. 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/DEAD61500702.
Piano Sonata No. 2 in G-Sharp Minor, Op. 19 "Sonata Fantasy": II. Presto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdeddac07ef68f7d2d4699bbabb4ac1eece0b8281e812a4ab98ff02deee5b164. 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/DEAD61500703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6af03257124c5fd26a1c31c5a5844fe00b24afdbf99293e8608336956aa11133. 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/DEAD61500718.
Piano Sonata No. 3 in F-Sharp Minor, Op. 23: II. Allegretto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf142126e401191efef1bde6d9f6a310a1589a603ec6a7fd3d3c085c4f5002923. 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/DEAD61500705.
Piano Sonata No. 9 in F Major, Op. 68, "Black Mass"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80de06456a07570748691e4c85f42692766455bf754938103338ab63c6b6c09d. 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/DEAD61500719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56b57bf89c591d5d41d2c7ddf942b1599422eb5bea0210a76a094edbe92df4a2. 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/DEAD61500721.
Piano Sonata No. 4 in F-Sharp Major, Op. 30: I. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c8a0a88683c65ca7156b9bb0781a1fae3c718298129c0a7202e433c490048fc. 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/DEAD61500708.
Piano Sonata No. 7, Op. 64, "White Mass"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5cd5f1aef470382ea2dcbe9eda65625fa43f522270dbda5ed392f59027fa7e6. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/DEAD61500717.
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
Präludium Nr. 1 in C-Dur (Prelude No. 1 in C Major)
Klassik die man kennen muss! Die größten Werke der Klassischen Musik
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05edb9ba50e11d1da05375a30d7ee5b605e7f0c72f89470987f3c43372fd45ae. 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/DEE471800170.
Piano Sonata No. 16 in C Major, K. 545: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a6747d8d0271262fee4cdf62797b29d4d0f7b9a5b67c179c55bcf3eb6f3b986. 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/DEA809220801.
Piano Concerto No. 1 in B-Flat Minor, Op. 23: I. Allegro non troppo e molto maestoso – Allegro con spirito - Excerpt
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x556c9f48a86a8908b9324119db6a5e8cd890f9cfb714d27dbb425177792c9309. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/DEF056200301.