AuthenticDoc, a decentralized digital signature platform developed in El Salvador, launched on November 13, 2025, at the Adopting Bitcoin conference in San Salvador. The tool uses the Nostr protocol for its open-source, decentralized architecture, incorporating Bitcoin-compatible cryptography to enable tamper-proof document verification and user-controlled private keys.
Co-founder Fabian, of the Salvadoran firm illuminodes, announced the release during the conference. “The digital signature landscape is ripe for innovation, and AuthenticDoc is leading the charge,” Fabian said. “We’ve harnessed the power of decentralized open protocol technology to deliver unparalleled security and control, effectively eliminating single points of failure that plague traditional solutions. Our platform provides a robust, tamper-proof cryptographic verification and authentication solution that businesses can trust, all while making it accessible and affordable.”
Built by Bitcoiners, the start-up addresses vulnerabilities in centralized platforms like DocuSign, which holds about 70% of the $10 billion digital signature market. According to their press release, the sector is projected to grow to $60 billion by 2030 at a 40% compound annual growth rate, fueled by regulations such as the EU’s eIDAS and the U.S. ESIGN Act, alongside remote work trends and AI-driven authenticity challenges.
The platform’s core features include trustless identity verification, private key management for users, and ISO-standard compliance for enterprise use. It eliminates reliance on centralized storage by using Nostr’s event-based system, where documents and signatures are cryptographically signed and distributed across a network of relays, ensuring robust data storage and distribution.
Diego, head of technology at illuminodes, emphasized the shift from legacy systems. “Our decentralized architecture empowers users with private key control and trustless identity verification, moving beyond the vulnerabilities of centralized systems,” Adding that, “this is not just an incremental improvement; it’s a paradigm shift in how digital signatures are secured and managed.”
AuthenticDoc is free for basic use, with paid tiers based on volume for enterprises, undercutting competitors’ license-based models. The platform supports global expansion from its El Salvador headquarters, leveraging local talent and regulatory support to target markets in Latin America, North America, and Europe.
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