Bertram Lutz Wilhelm Passmann, better known by his stage name Bertram Engel (born 27 November 1957 in Burgsteinfurt), is a German rock drummer. Engel is best known for his work within Udo Lindenberg'
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 0x03677012048269c92e8f82a958cbedbbe658223b3751290e727d55e6e3b595ef. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f7447989-a8a7-4355-bbdb-e5d5ac6bc9fd.json and https://artists.proofprofile.net/proofs/artist/f7447989-a8a7-4355-bbdb-e5d5ac6bc9fd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Mit alten Männern spiel' ich nicht (Live)
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 0x819a0d4d55385bcb85a03f9627caad6f37333fb646867a7b000609001b581727. 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/DEA819900153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe06e2d046f008f7b14ff8306349dd76d1ecc03fa0fe49a16410f069a6cb93067. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-21T17:11:41Z), 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/DEA819800068.