Christine Schornsheim, married name Christine EngelmayrRede Dr. Ernst Engelmayrs anlässlich des Festaktes für den neuen Lehrstuhl Allgemeinmedizin an der Universität Erlangen-Nürnberg, 29 January 201
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 0x3be06656d4de88b84eac0a01ab0beffa0430fed3eca62c9c532f35cc80e5938f. 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/b5ba89a5-45a6-476e-b42a-aa9b9229cec3.json and https://artists.proofprofile.net/proofs/artist/b5ba89a5-45a6-476e-b42a-aa9b9229cec3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Solosonaten und Trios von Leopold Mozart
Harpsichord Concerto No. 2 in E Major, BWV 1053: II. Siciliano
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 0x58a27801862b3e3f1264d8ffe8c234822ed69832ac96a99033e0c90259617689. 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/NLY331406838.
Concerto for Harpsichord No. 6 in F Major, BWV 1057: III. Allegro assai
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b811a21570e7f3d6481634e0ce5f236d36310939281e7f0c5ef9e57e27303f7. 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/NLY331406851.
Harpsichord Concerto No. 4 in A Major, BWV 1055: II. Larghetto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadc52dc547ee7a7cd7ff70e625a8367ef4754acb3887a4641aca32d2d3f92464. 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/NLY331406844.
Harpsichord Concerto No. 5 in F Minor, BWV 1056: II. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a14f1339de31c6e5953eb3eb7c422061ed1bc36f1a0203a9dca1b3963518316. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/NLY331406847.
Harpsichord Concerto No. 3 in D Major, BWV 1054: II. Adagio e piano sempre
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd4689be03c4cea7ae68158b74f644296aa544b633542648a0cc96f7a9f684d0. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/NLY331406841.
Harpsichord Concerto No. 6 in F Major, BWV 1057: III. Allegro assai
Johann Sebastian Bach: Harpsichord Concertos (Schornsheim, New Bach Collegium Musicum, Glaetzner)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb0f6cbd481677e41c88e61dc39c2950bfb1a8e8eaec1a6069721b729f2b1c94. 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/DES380004596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc06026d96f9881cbd784457e69f6d7dce4e59a893ff42cae2b517d953893cd7. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/NLY331603769.
Harpsichord Concerto No. 1 in D Minor, BWV 1052: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x371d82c3074fc953638ade074200b9f8fc1a944bec748f4c2ede4e01fb59c621. 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/NLY331603756.
Harpsichord Concerto No. 1 in D Minor, BWV 1052: II. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8f1b0326272c2c672508698aa7c97d24ed86ea4db5041a1f448cb5a6febe9d9. 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/NLY331603757.
Harpsichord Concerto No. 2 in E Major, BWV 1053: I. —
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8197eaca72d45ad1334ed54400276985465917ee059d7fbfecce2fb9e894117. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/NLY331603759.
Harpsichord Concerto No. 3 in D Major, BWV 1054: I. —
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ba63f8838a3e011a32d2636300d6ea775e6ba0012b085e282f2ba0a7a44c198. 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/NLY331603762.
Harpsichord Concerto No. 3 in D Major, BWV 1054: II. Adagio e Piano sempre
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22eeaf81a497acaf6593528a1217835b25cddb63056337e72906e4c0323e1b8a. 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/NLY331603763.
Harpsichord Concerto No. 4 in A Major, BWV 1055: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37c42d4212d5070113529c622a19bfb189c35317c225c5d0009c3df92ac90934. 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/NLY331603765.
Harpsichord Concerto No. 5 in F Minor, BWV 1056: III. Presto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea72e1be71afc3ebb7b335dd2641997bba349e3c740f536b0b200e6724e820fd. 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/NLY331603770.
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
Harpsichord Concerto No. 1 in D Minor, BWV 1052: III. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a6c02d8849eb430ac1e120d01e41617142b62f6300fac64b8d68efb7a73e3b1. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/NLY331603758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e7d35bf167be56d9cfc8224d48683328a6fa80ef33e8bc5c84525be85a932a0. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/NLY331603760.
Harpsichord Concerto No. 2 in E Major, BWV 1053: III. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86dbc846c605d7d3516a60463797d26b5b7b276f90e212e0d675ab053db669cc. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/NLY331603761.
Harpsichord Concerto No. 3 in D Major, BWV 1054: III. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a4c7baa461bacd46c862b0016bc66bbb7fd3781af5c1208ecc997ce90102960. 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/NLY331603764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x990736ce6e300c5b94373fe90ae782e8ff37e9da3fdffd1c010af4227de03c75. 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/NLY331603766.
Harpsichord Concerto No. 4 in A Major, BWV 1055: III. Allegro ma non tanto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a850fb57aa6e59c02822b4c2814301031851cc0e00ca76ed4bbbe5e630ab07f. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/NLY331603767.