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 0x31813a607c1a6b0881587a77cee2b1e3ab78986c4189c7d947cc9d1fd90f7f71. Chain 2 (Bitcoin): anchored in block 953741 (2026-06-15T04:44:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9e26be40-74e0-4cb4-89dd-22c151672551.json and https://artists.proofprofile.net/proofs/artist/9e26be40-74e0-4cb4-89dd-22c151672551.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Bärner Meitschi (Zürimaa) - aus "Sing meinen Song, Vol. 2"
Sing meinen Song - Das Schweizer Tauschkonzert, Vol. 2
Fudi (Foodie) - Duett Version, aus "Sing meinen Song, Vol. 2"
Black Pearl - Duett Version, aus "Sing meinen Song, Vol. 2"
There Again (Terra Australia) - aus "Sing meinen Song, Vol. 2"
Das wünsch i dir - aus "Sing meinen Song, Vol. 2"
L.O.V.E. (L.I.E.B.I.) - aus "Sing meinen Song, Vol. 2"
Done with Fake - aus "Sing meinen Song, Vol. 2"
Black Pearl - aus "Sing meinen Song, Vol. 2"
Sing meinen Song - Das Schweizer Tauschkonzert, Die schönsten Duette