Cove - The simple bitcoin wallet

Create test PSBT files which are valid, but garbage values

Coldcard Interface Library in Rust

Binary-verified reverse engineering of the COLDCARD Mk3 weak-RNG vulnerability (4.0.1-4.1.9): root cause at the linker boundary, bounded PoC, and seed-to-xpub pipeline

Generate address list from xpubs BIP44 BIP49 BIP84 segwit and legacy

Clean-room open-source Rust firmware for Coldcard hardware wallets. MIT licensed, no-std, Cortex-M4F.

TypeScript/JavaScript implementation of Seed XOR for splitting and combining BIP-39 seed phrases. Compatible with Coldcard.

Implements the COLDCARD KeyTeleport protocol in rust

A local-first, watch-only Bitcoin UTXO planner. Import your xpub, inspect your UTXO set, plan spends and consolidations with fee-aware coin selection — no keys, no cloud, no telemetry.

Reproducible COLDCARD Mk3 predictable-RNG first-boot research, corrected CUDA scanner, evidence, and public handoff.

a watch-only btc wallet for coldcard mk4

Docker image for Coldcard simulator

Reproduce master fingerprint from XPUB

Go implementation of BIP85 (Deterministic Entropy From BIP32 Keychains). Derive mnemonics, private keys, passwords, and dice rolls from a single master backup.

Verify whether your COLDCARD correctly generates seeds and addresses from dice rolls.

Free, open-source Bitcoin self-custody documentation. Device setup guides, backup checklists, and inheritance planning. Community-maintained.

Tracks the bitcoin drained from Coldcard wallets with weak-entropy seeds, and whether the attackers ever move it. Detectors, datasets, and the chains deliberately left off.

Peter Todd's push-button RNG on an ESP32-S3 Reverse TFT Feather: BIP39 seeds from human timing entropy