1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 artist was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x714ee6eebef6b75f2f1558fa157a41f3d2ea4ba960ae57802eeb816e19aa248d. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2a3ca6f5-8d67-4a56-abf3-f2bff949e9e8.json and https://artists.proofprofile.net/proofs/artist/2a3ca6f5-8d67-4a56-abf3-f2bff949e9e8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
3 korvisor: No. 2. Djupt, djupt i mitt hjarta
4 sånger a cappella: No. 1. Liten Madrigal
4 sånger a cappella: No. 2. 2 kvallsmanar: No. 1. Manen ar dod
4 sånger a cappella: No. 3. 2 kvallsmanar: No. 2. Kvallen sjunger
4 sånger a cappella: No. 4. I en flickas ora
Sommaren ur De fyra årstiderna i Buenos Aires
Den Signabe Dag (The Blessed Day) (arr. A. Hagberg and J. Lundgren)
Romelin Kerubinta (arr. A. Hagberg and J. Lundgren)
Varldens Fralsare Kom Har (Now Come the World's Saviour Now Come) (arr. A. Hagberg)
Ack, Att I Synd vi Slumbra Bort (Ah, That We in Sin Should Slumber in) (arr. A. Harberg and J. Lundgren)
O Kriste, du som Ljuset ar (O Christ, Who Art the Light and Day) (arr. A. Hagberg and J. Lundgren)
I Vantan pa Varen (While Waiting for the Spring)
Den Signade Dag (The Blessed Day) (arr. A. Hagberg)
I väntan på våren/ While Waiting for the Spring
L'incontro di dante ed offenbach nell' altro mondo