Kurt-Heinz Stolze (26 January 192612 August 1970) was a German pianist, harpsichordist and composer. He was born in Hamburg. He studied piano, organ and conducting at the Hamburg Conservatory with W
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 0x2724992fc8d3db10078a08c8b419e8f2b9d10ee6cb2a757eae1d9b8f4b3be84b. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/23a949d0-da06-4312-a2b3-bfe0416a62e4.json and https://artists.proofprofile.net/proofs/artist/23a949d0-da06-4312-a2b3-bfe0416a62e4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Stolze & Tchaikovsky: Onegin: Opening Scene - Dance of the Young Girls (After Eugen Onegin, Op. 24)
Tchaikovsky: Onegin, Theme and Variations, Ballet Imperial & Diamonds
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 0x6c8ad0b513c4459751439d640cfadc8130e12a4ad2bef0c20c309405a09899d3. 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/AUEM07700043.
Stolze & Tchaikovsky: Onegin: Lensky's Variation - Pas de deux. Lensky and Olga (After Eugen Onegin, Op. 24)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa86a1452385c494cb16fd7ba1528b9e2838803bd93b9a7c78f1a8f9ced017142. 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/AUEM07700044.
Stolze & Tchaikovsky: Onegin: Scene. Onegin and Tatiana - Onegin's Variation (After Eugen Onegin, Op. 24)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6347d5750a664a13c98e3c1f57b70bcb7bc8c6d57e7491761afead6f72da5eec. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUEM07700045.
Stolze & Tchaikovsky: Onegin: Finale of Opening Scene (After Eugen Onegin, Op. 24)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dfa260566b2a2535b417fdc211b9c3aac48f1708207de09ba4d823fc79bd920. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUEM07700046.
Stolze & Tchaikovsky: Onegin: Tatiana's Bedroom. Apparition of Onegin - Pas de deux (After Eugen Onegin, Op. 24)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1726bebb68ce11e82f9b300241ae2321a294794fad20a33a3d445347132eabb6. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUEM07700047.
Stolze & Tchaikovsky: Onegin: Opening Waltz (After Eugen Onegin, Op. 24)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74d0ed78ea8e31a6a887ab35e72329fd2ab535c98a575d4f1fd77af51e96ecc7. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUEM07700048.
Stolze & Tchaikovsky: Onegin: Tatiana's Variation. General Dance - Quarrel. Onegin and Lensky (After Eugen Onegin, Op. 24)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24536e7ca47fda2f5c5b49159afb4e77d381c1fe4bfbf61cca71b7aa07f98c48. 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/AUEM07700049.
Stolze & Tchaikovsky: Onegin: Duel and Death of Lensky (After Eugen Onegin, Op. 24)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb904c0e10272f2cf067d6fb932615f2e11f657bec4f6e4a165feef1e2a18f8e. 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/AUEM07700050.
Stolze & Tchaikovsky: Onegin: Grande Polonaise (After Eugen Onegin, Op. 24)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3acc10223d161639741d74016b3ba2411a92cb17bab807eab19ec4e89cfb8577. 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/AUEM07700051.
Stolze & Tchaikovsky: Onegin: Final Scene - Tatiana Rejects Onegin (After Eugen Onegin, Op. 24)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba700de969d758f03e0ce4739484cdce2b43d5dc9201f8042ba0d2f4150c2fba. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUEM07700053.
Stolze & Tchaikovsky: Onegin: Russian Dance (After Eugen Onegin, Op. 24)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe50a1a47a902bf8c8acba55cbc3f622da4749c180dee81f3d5351a99da756898. Chain 2 (Bitcoin): anchored in block 959146 (2026-07-22T17:41:23Z), 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/AUEM07700052.
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