El Salvador has taken another historic step in technological innovation by beginning to protect official documents using Bitcoin (BTC) blockchain technology, marking a global precedent in digital transparency and record security.
The first documents registered on the Bitcoin network were the academic certificates of graduates from the CUBO+ program, an initiative promoted by the National Bitcoin Office (ONBTC). This pioneering project was developed in collaboration with Simple Proof, a U.S.-based company that uses the OpenTimestamps protocol to create immutable, verifiable digital records on the blockchain.
“Bitcoin is not only the money that no one controls; it is also the only clock that no one can manipulate,” said Carlos Toriello, CEO of Simple Proof, in an interview with Diario El Salvador.
The process leverages Bitcoin’s decentralized nature: each block generated approximately every ten minutes acts as a universal timestamp. When a document is linked to a block number, it becomes verifiable proof of its existence at a precise moment in time.
Unlike other systems, Simple Proof does not upload files or personal information to the blockchain. Instead, it creates a cryptographic hash, a digital fingerprint representing the document. This hash, occupying just 32 bytes of block space, ensures scalability and sustainability — allowing millions of documents to be protected without burdening the Bitcoin network.
The OpenTimestamps protocol, created by Bitcoin developer Peter Todd, uses the blockchain as a global notary, confirming the existence of a document at a specific time without revealing its contents.
Each CUBO+ graduate can now verify the authenticity of their certificate through the official platform bitcoin.gob.sv, ensuring transparent validation without intermediaries. “Some students have chosen to publish their names alongside their proof, while others remain anonymous. The key point is that everyone can prove their diploma’s authenticity on the blockchain,” Toriello noted.
Building on this first success, Simple Proof and the National Bitcoin Office are already working with other government ministries to extend the system to administrative and legal documents. The goal is to create a tamper-proof public record system, strengthening transparency, security, and trust in state institutions.
With this initiative, El Salvador reaffirms its global leadership in blockchain adoption, extending Bitcoin’s utility beyond finance to the protection of public information and digital sovereignty.