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 0x533f7997aa24634170ef07253cb9a6ea7064eee338f43a1fd2ee5f1f5f34e546. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4f92093e-28ea-4c53-8639-5a707548b83f.json and https://artists.proofprofile.net/proofs/artist/4f92093e-28ea-4c53-8639-5a707548b83f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Bach Meets Buxtehude, Vol. 2. Totentanz-Orgel, Sankt Marien, Lübeck (Live Version)
Maleingreau: Symphonie de la Passion & Dupré: Symphonie-Passion. Grosse Orgel, Sankt Marien, Lübeck (Live Recording)
Bach Meets Buxtehude, Vol. 1. Totentanz-Orgel, Sankt Marien, Lübeck (Live)
Meditation, Große Orgel, St. Marien, Lübeck (Live)
Orgelwerke der Romantik, Vol. 2, Große Orgel, St. Marien zu Lübeck (Live)
Grieg, Mussorgsky, Rachmaninoff, Wagner auf der Orgel, Große Orgel, St. Marien zu Lübeck (Live)
Organ Highlights, Große Orgel, St. Marien zu Lübeck (Live)
Orgelwerke der Romantik, Vol. 1, Große Orgel, St. Marien zu Lübeck
Weihnachten in Saint Marien, Lübeck, Große Orgel (Live)
Improvisationen, Große Orgel, St. Marien zu Lübeck (Live)
Antonín Dvořák: Sinfonie No. 9, Große Orgel, St. Marien zu Lübeck (Organ Version, Live)