Mats Lidström (born 1959) is a Swedish solo cellist, recording artist, chamber musician, composer, teacher and publisher. His first teacher was Maja Vogl, of the music conservatory in Gothenburg. He
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 0xaf6ab04f6aa0d2702c3bd7a72a0e67e2584a33c0e59f9eb29ca7f3b99cc8592d. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4bff660b-745c-4403-8dea-182ebeac039b.json and https://artists.proofprofile.net/proofs/artist/4bff660b-745c-4403-8dea-182ebeac039b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Lidström: Rigoletto Fantasy - Shostakovich: Cello Concerto No. 1
Smörgasbord: Encores and Short Pieces for Cello and Piano