I’m working on a Bitcoin project designed for people in remote, hyperinflation-affected communities who lack access to banks, internet, or the knowledge to self-custody BTC. The solution is a tamper-evident, pre-funded paper certificate secured by a 2-of-2 multisig wallet. One private key is hidden inside the physical certificate; the second key is generated by a foundation or trusted entity and also securely
MyCardStatement embedded within the same certificate. A public Bitcoin address—derived from both keys—is printed on the outside, allowing anyone to verify its on-chain balance. BTC is sent to this address by either the certificate issuer or the foundation. This makes Bitcoin usable as an offline, cash-like medium of exchange while remaining secure and trust-minimized. I’m currently looking feedback.
This pre-funded, tamper-evident Bitcoin paper certificate secured by a 2-of-2 multisig wallet is an innovative solution for unbanked, off-grid communities, offering offline, cash-like usability and on-chain verifiability. Key strengths include addressing a real need, trust-minimized security, and pre-funding for easy adoption. However, critical challenges lie in devising robust key recovery for lost certificates, establishing practical and accessible methods for users to spend or redeem the BTC without internet or technical knowledge (likely via trusted local agents), and ensuring the tamper-evident features and key hiding mechanisms are truly secure against sophisticated attacks.