Joana Mallwitz (born 23 September 1986) is a German conductor and pianist. She is the principal conductor of the Konzerthausorchester Berlin. Biography Born in Hildesheim in 1986, Mallwitz began to s
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 0xaf1f88c9f54fa0c158f3b924c6146498d9e0d2304cf9f506e3b6e95765963ef7. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5bb8c36a-bc90-42fc-bc5c-1cd2dd12290e.json and https://artists.proofprofile.net/proofs/artist/5bb8c36a-bc90-42fc-bc5c-1cd2dd12290e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Symphony No. 1 "Berliner Sinfonie": Grave. Breit und wuchtig -
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 0xb64907618c2865c5e748e2cb67bbd1dc4e0c5cd021e3eaca9ea5d3356fb2b8f1. 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/DEN962400501.
Symphony No. 1 "Berliner Sinfonie": Allegro vivace. Wild, heftig -
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c8e84ed674937969dac047478f0bc974ec1a2844e6845f0f5a74a9363088956. 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/DEN962400502.
Symphony No. 1 "Berliner Sinfonie": Larghetto. Ruhig, ohne Leidenschaft
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6609f6c50c80d7c46ff14c3a591ecd047d2bb7014ee56c51904405262359dd38. 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/DEN962400504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34605e27dbffdcfd0f82a5b1c33503494b4defd1567936a5442a523bf1953c4a. 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/DEN962400511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0845bc04bf6e74a755e3a2badd12bb579a533ad3791bea0c64f21b986a2f1efe. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/DEN962400516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbefb6bd9f7fe83f179c337068bf0fcf64f4f73846aa2ee4aa982e9317b06192. 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/DEN962400517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe98b150410c2040cbfd41171d3ef3bea503e5caf77b18d480d83a883df3c41e0. 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/DEN962400518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fbff2e5ddddf302b7f210fe63558b2a6ee7a145ce6d4a51a011467c74288cd1. 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/DEN962400523.
Symphony No. 1 "Berliner Sinfonie": Andante religioso -
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6ec10e302febf9c7b3d893edcd9e9843f08d47a75e9dbb2d20a4457e282407c. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/DEN962400503.
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 0x1e836032aef39590d2ab2889b3bfdfa6fc252faa3eb2d273bd77795926c137b3. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/DEN962400512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4f3ecc5fa1c4c57dc4892d5b32862c2c37164912fafeedeeccbfaa136dc3c8f. 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/DEN962400513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3dc076a47e5207a7e5235870f9c07447e35162d572cac05c391376cfe1233aa. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/DEN962400514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9102fa553a71ef0974a43a47adebb0cd574dff433cc4112ff38c2ad57b15e2a3. 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/DEN962400515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5906542faed3d9f8aa60aad62337c37e42e5ce8279aced9896c75dfb22199ab. 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/DEN962400519.
Symphony No. 2: I. Sostenuto - Allegro molto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39e185f4405b1ecaa5624eb5f9fbe1d0b065170f9f32a5f5d3e882fe7b2e38f6. 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/DEN962400521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf14834f00476f9afdd7835dc97c5ae1fffa7a8361ab2990f5ea06c0ce674bed9. 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/DEN962400522.
Weill: Symphony No. 1 "Berliner Sinfonie": Allegro vivace. Wild, heftig -
Weill: Symphony No. 2: I. Sostenuto - Allegro molto