Hieronymus Praetorius the Elder (10 August 1560 – 27 January 1629) was a Northern German composer and organist of the late Renaissance and early Baroque whose polychoral motets in 8 to 20 voices are i
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 0x9136835e9bcc59b70969d673a0b13162d64f61f43f01e01f6bb7ea8c9a5846d9. Chain 2 (Bitcoin): anchored in block 953808 (2026-06-15T16:45:15Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ed6fd0e4-ec15-4bfd-8e6c-8dbebdcf5ab5.json and https://artists.proofprofile.net/proofs/artist/ed6fd0e4-ec15-4bfd-8e6c-8dbebdcf5ab5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Praetorius: Missa in Festo Sanctissimae Trinitatis
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 0x165b65f1b2c3d701335beb42ec9afed1884c540eb9b62757a097bfd64b78ce2a. Chain 2 (Bitcoin): anchored in block 960352 (2026-07-31T05:48:30Z), 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/DEB200824512.
Missa in festo Sanctissimae Trinitatis: I. Kyrie eleison
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81a682cedda3febb1ca53d72f14dd6c1faedaa8ee476b03da7549f4c6a94cba6. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/DEB201495402.
Missa in festo Sanctissimae Trinitatis: II. Christe eleison
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x906e611f11ac163d60b3f34feeecdc68191a3fa0a8907fc62e809df0b840a83e. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/DEB201495403.
Missa in festo Sanctissimae Trinitatis: III. Kyrie eleison
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea7666bb5af3b18295d4c83d2922b9c0d8218ce2345576948f5ef4ccb2d61a73. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/DEB201495404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4ab92fd875144d0210e67563d475452bd45e8296f601a0abe76fc494eda609a. 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/DEB201495406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b4fe9f79ebca090de0927309812451c911c0df4f1bf87c8dfdac5531e0dc68b. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/DEB201495407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c432f58bff54f28cbd9953b15c6925c3cab9f9bd6b5787225b75fbaeac7fd2c. 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/DEB201495408.
Missa in festo Sanctissimae Trinitatis: V. Credo. Wir gläuben all an einen Gott
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x552ff01a1c422c99de4e0a12147817a067faff47717582f05e4a9aa8d926a324. 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/DEB201495409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35dc9a2083275bc942dda354112093eb25331e490ed58a32503652f601ac529e. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/DEB201495411.
Missa in festo Sanctissimae Trinitatis: VI. Sanctus, Benedictus "Sanctus Dominus Deus Sabaoth"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67e2c87f414665e2c4f7632f58b9fc0824b1628d53694a2d5a1af777e6b6193f. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/DEB201495412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2730b74e23ac40b6c9b105c1e8f0ae927b49adb7fe09f2ccc7b4578331987960. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/DEB201495413.
Missa in festo Sanctissimae Trinitatis: VII. Agnus Dei
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1e7240e10f85ebb8f1cc8a49050b571952969b0bbd330a394a46ba1e4a5440a. 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/DEB201495415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54d45e5945a281587605763f693fec9d3c60d07bb5578c561fd242c4428c4c87. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/DEB201495417.
Christ unser Herr zum Jordan kam (Fantasia)
Ein feste Burg ist unser Gott: Luther and the Music of the Reformation
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x903985ceb7f5a2865b225791fc5d23dfd2902cf3b049b1e9c3737873063ba6be. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/BER181637621.