Peter Neumann/Collegium Cartusianum Köln/Kölner Kammerchor/Barbara Schlick/Ulla Groenewold/Markus Schäfer/Klaus Mertens
{"copyright_id":"0x20a286164eb656680458c6592ce6d9141921df83d7fa19660989219417cc82a5","name":"Peter Neumann/Collegium Cartusianum Köln/Kölner Kammerchor/Barbara Schlick/Ulla Groenewold/Markus Schäfer/Klaus Mertens","registered_at":"2026-06-14T22:38:45Z","symbol":"NIM0598583","token_address":"0x211b98d31f78efce3ec8073c6740a1b3d1c21174","type":"artist","uuid":"acfdb340-5534-40b4-8ecd-5744ca969e19"}
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 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 0x20a286164eb656680458c6592ce6d9141921df83d7fa19660989219417cc82a5. Chain 2 (Bitcoin): anchored in block 953754 (2026-06-15T06:45:19Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/acfdb340-5534-40b4-8ecd-5744ca969e19.json and https://artists.proofprofile.net/proofs/artist/acfdb340-5534-40b4-8ecd-5744ca969e19.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Missa in C, KV66 "Dominicus-Messe": Kyrie
Mozart: Sämtliche Messen / Complete Masses
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 0xb302fc6bc046d1b99b65b42deea40ca7f1d9bbfe636dd9b7f3b9bbe0b987b548. 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/DEC628900344.
Missa in C, KV66 "Dominicus-Messe": Laudamus te
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61722a9b275495349b23f826368eb6e0857f5b021cb00030223fa9835b179153. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/DEC628900346.
Missa in C, KV66 "Dominicus-Messe": Gratias agimus tibi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3aa7b18c2fb9062f3113e2d00a2d96b8ef90098e538b63676303367bb6c6d6f. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/DEC628900347.
Missa in C, KV66 "Dominicus-Messe": Domine Deus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f1aa0717bcb3363782dd51fa248dc24b9c59a47d3060ae455f7c1ae26630ce9. 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/DEC628900348.
Missa in C, KV66 "Dominicus-Messe": Qui tollis
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x678ce79bf55666a1413b46310464f657485ad5773cf79179eb56c577b628a26c. 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/DEC628900349.
Missa in C, KV66 "Dominicus-Messe": Quoniam tu solus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x088867f45911ea67273029603acb00c202fd3668dd200fbf6a98997adb972b44. 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/DEC628900350.
Missa in C, KV66 "Dominicus-Messe": Cum sancto Spiritu
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c8a927f36b0d18718d16a36d08af26ef5fb75922cfedf8cdabadeb8ca087b8b. 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/DEC628900351.
Missa in C, KV66 "Dominicus-Messe": Patrem omnipotentem
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x487eb6ecb57f13e4b7348bee6b85ae8b67bdb4bc13539d7522a36eeb30b97556. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/DEC628900353.
Missa in C, KV66 "Dominicus-Messe": Et incarnatus est
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35a3da46f49c7699930c47ca4b19c0fb3ff9a3d02922415c8a12e0acabd5ebb4. Chain 2 (Bitcoin): anchored in block 960157 (2026-07-29T22:12:10Z), 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/DEC628900354.
Missa in C, KV66 "Dominicus-Messe": Crucifixus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22dcfc99855e6bf685ab9cdec59c2d93d04492aee3a9f89c4366d499b1528fb9. Chain 2 (Bitcoin): anchored in block 960191 (2026-07-30T01:51:26Z), 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/DEC628900355.
Missa in C, KV66 "Dominicus-Messe": Et in Spiritum Sanctum
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2680de6314dd634d247f280bcc446f12dce28fab6a7711c578bd63dd6b0fd7ed. 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/DEC628900356.
Missa in C, KV66 "Dominicus-Messe": Et unam sanctam
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6175e7bd7794d504f4b5b20e7f1d68aed38c5f033f5252758c453d2e5160878. 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/DEC628900357.
Mozart: Mass in C Major, K. 66, "Dominicus": Sanctus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed75b060a96fcecf49c94377f2060c12760d70ecfe05caf35d7a43ee69d87c23. 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/DEC628900358.
Missa in C, KV66 "Dominicus-Messe": Benedictus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd92ddd803a87b7e3a9bb5bd7442f90fb0d9177b7446da89dbf1be682d93fbc0. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/DEC628900359.
Missa in C, KV66 "Dominicus-Messe": Agnus Dei
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x489625766830b3469264af025f3e5472a7cd11498236df70c4bf0035ba921823. Chain 2 (Bitcoin): anchored in block 960170 (2026-07-29T23:52:38Z), 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/DEC628900360.
Mass uin C major, K. 167 "Missa in honorem Sanctissimae Trinitatis": Kyrie
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x179985668caad82976603ea683e610480169d5d31765b8291ec3363795187693. 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/DEC628900361.
Mass uin C major, K. 167 "Missa in honorem Sanctissimae Trinitatis": Et in terra pax
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3866c2523854511c22d821ba0a4d645e1aaf862d9fe43838cbfcdeac9d1e981f. 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/DEC628900363.