Built on Bitcoin's Ledger Model

Sundial leverages a UTXO architecture to deliver institutional-grade security, deterministic execution, and fraud-proof protection for Bitcoin yield generation

Layer 2 Architecture

A multi-layer approach to scaling Bitcoin while maintaining Layer 1 security guarantees

Bitcoin Layer 1

Native Bitcoin blockchain providing ultimate security and finality. Assets never leave user custody.

Bridge Infrastructure

Trustless ZK-powered bridges enabling seamless asset movement between Bitcoin and Sundial without custodial risk.

Sundial Layer 2

Optimistic rollup with fraud proofs, processing thousands of transactions per second with Bitcoin-level security.

Application Layer

DeFi protocols, institutional services, and SDK integrations built on Sundial's secure infrastructure.

Core Technology Features

Purpose-built for institutional Bitcoin infrastructure

UTXO Architecture

Inherits Bitcoin's battle-tested security model with deterministic execution and no shared state vulnerabilities.

Fraud Proofs

Optimistic rollup design with efficient on-chain verification ensures invalid transactions never finalize.

High Throughput

Process thousands of transactions per second while maintaining sub-second confirmation times.

ZK Bridges

Zero-knowledge proofs enable trustless asset transfers without introducing custodial risk.

Babel Fees

Pay transaction fees in BTC, ADA, or any supported asset - no need to hold multiple tokens.

Full Auditability

Complete transaction history and state transitions verifiable on-chain for regulatory compliance.

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Security Comparison

Why UTXO architecture provides superior security for institutional assets

UTXO Model

Stateless execution - no shared memory
Deterministic outcomes guaranteed
No reentrancy attacks possible
Parallel transaction processing
True self-custody maintained
Audit trail permanently recorded

Account Model

Shared global state vulnerabilities
Non-deterministic execution paths
Reentrancy attack vectors
Sequential processing bottlenecks
Contract custody requirements
Complex state verification