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 0x1f4dd20b96e0db8c473b39f7c695e389f21b69fc39abf74a32b959de9197a6ed. Chain 2 (Bitcoin): anchored in block 954659 (2026-06-21T06:14:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/db9c439a-019e-46fc-9993-4e84254b1046.json and https://artists.proofprofile.net/proofs/artist/db9c439a-019e-46fc-9993-4e84254b1046.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Les filles de mon village (Mono Version)
Au bal à Jo Courtin, no. 1 (Mono version)
L'accordeoneu / Ronde ronde (Mono Version)
Au bal à Jo Courtin no. 2 (Mono version)
Chérie, donne moi un baiser (Mono Version)
Au bal à Jo Courtin, vol. 5 : Les succès d'Edith Piaf (Mono version)
En plein dans l'musette, au bal à jo courtin no. 7 (Mono version)
Au bal à Jo Courtin No. 8 (Mono version)
Le p'tit musette à Jo Courtin (Mono Version)
C'est ça l'amore / Nathalie s'en va (Mono Version)
La marche des gosses / Ma Nini (Mono Version)
Les parisiens / Java de Pigalle (Mono Version)
Ça gaze / Musette à Montmartre (Mono Version)
La plus bath des javas / Chinoiserie (Mono Version)
Guitare et tambourin / Rue Jouvenet (Mono Version)