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4NK: the self-custodial cloud infrastructure
For fifteen years, Bitcoin has proven that a decentralized network can secure value without any trusted intermediary. Every block, every signature, every verification is performed by the users themselves. No need for a centralized custodian: everyone can verify, everyone can hold.
But outside of payments, the digital world still relies everywhere on trusted third parties:
centralized clouds and servers, messaging platforms, digital identity services, storage solutions.
These custodians capture data, impose costs, and create points of failure. They are the equivalent of banks before Bitcoin: convenient, but vulnerable and intrusive.
4NK: Bitcoin beyond payment 4NK is a client-side infrastructure layer that extends Bitcoin’s native properties to everyday digital uses:
The resilience of a distributed proof network → every flow becomes verifiable, without relying on a server. Money as a universal mechanism → reliable remuneration for security. Cryptography as identity → public keys extended into digital identities.
How does it work? Encrypted messaging: based on non-interactive secret sharing derived from Silent Payments. Each message generates a unique, encrypted, and untraceable secret, with no third party involved. Off-chain contracts: signed by Bitcoin wallets, validated by peers, and linked to a layer-2 oracle (Signet) regularly anchored on the Bitcoin mainnet. Distributed storage: files kept locally between stakeholders or in a mesh network, never in cleartext, never in a public cloud. Payments in one scan: native Lightning integration, no Stripe, no PayPal.
Everything is operated client-side (Client-Side Validation). No custodian.
Custodian-killer Just as Bitcoin killed the need for a central bank to hold and transfer value, 4NK kills the need for digital custodians to identify, exchange, store, and contract.
This is not a new blockchain. This is not a token. It is the natural extension of Bitcoin:
distributed proofs as a foundation, money as a universal rail, public keys as digital identities, secret sharing as sovereign messaging.
4NK is not a theory Notaries: legal acts anchored on a proof layer over Bitcoin. SMEs: sovereign document management, serverless messaging. Public bodies: integrations underway with operators. Healthcare: POC in deployment.
Every time, the model is the same: replace a custodian with Bitcoin + client-side.
The result Making Bitcoin not only the currency of trust, but also the universal infrastructure layer of the digital world:
Simpler login: four words + multisignature across devices. Simpler payments: compatible with all Bitcoin rails + integrated Silent Payment wallet (web & mobile). Cheaper, no CAPEX: more users = more resources. Cheaper, no infrastructure: less tooling, less supervision, less complexity. More secure: encryption directly by user identities, redundancy included. More resilient: no central point, no centralized rights management. Fully verifiable cryptographically via the anchoring layer. Everything is a contract: compliance with agreements, norms, and standards is cryptographically enforced between final parties, where the proof system is also the payment system. As fast as needed: there is always a route to deliver the information.
Our focus
Local AI experiences integrated into a “Chat First” UX, replacing legacy workflows. Effective support, separate from core development.
Our ambition To make Bitcoin not only the currency of trust, but also the universal infrastructure layer of the internet:
identity, messaging, contracts, storage.
An internet where the user is sovereign, verification is local, and custodians belong permanently to the past.
4NK: the self-custodial cloud infrastructure.