BitcoinAddressFinder: Instructions file for Claude Code

CLAUDE.md

BitcoinAddressFinder CLAUDE.md is an instructions file for Claude Code from bernardladenthin/BitcoinAddressFinder. It costs 12,146 tokens per session, scanned A, original, Apache-2.0.

Project instructions for AI assistants working on BitcoinAddressFinder, a Java program that searches generated cryptocurrency keys and checks their derived addresses for balances. They describe the project, its Maven build commands, and its Java version.

In plain words
What is it for?
Use them when compiling, testing, packaging, or changing BitcoinAddressFinder. They document commands for Maven builds, tests, coverage reports, and creating a packaged JAR file.
Why use it?
They help an assistant use the repository’s actual build and test setup, including the fact that it has no Maven Wrapper. Maven is a Java build tool that compiles code, runs tests, and packages applications.

Instructions file for Claude Code

Written for Claude Code: the file is CLAUDE.md. Also seen: mentions CLAUDE.md; mentions Claude Code.

This is bernardladenthin/BitcoinAddressFinder's own configuration. It tells Claude Code how to work on BitcoinAddressFinder itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything BitcoinAddressFinder configures →

Reuse

Borrowing it

Nothing to install: this file belongs to bernardladenthin/BitcoinAddressFinder. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/bernardladenthin/BitcoinAddressFinder/main/CLAUDE.md
Clone the repo
git clone --depth 1 https://github.com/bernardladenthin/BitcoinAddressFinder

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

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Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

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Per session 12,146 This file is loaded in full into every session.
When invoked 12,146 The same file — it is already loaded in full.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.12146 $0.12146
Opus 5.5 $0.04858 $0.04858
Sonnet 5.5 $0.02429 $0.02429
Haiku 4.5 $0.01215 $0.01215

Measured yesterday against content hash 2f7bba7f29f3, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

BitcoinAddressFinder CLAUDE.md scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured yesterday.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

CLAUDE.md · 834 lines

How it starts

The opening of the file, as written. The whole thing — 834 lines — stays where its author put it; the contents beside it link to each section on GitHub.

CLAUDE.md — BitcoinAddressFinder

This document provides guidance for AI assistants working on the BitcoinAddressFinder codebase.


Project Overview

BitcoinAddressFinder is a high-performance, open-source tool for scanning Bitcoin and altcoin private keys and checking whether the derived addresses have balances. It supports 100+ cryptocurrencies and uses both CPU (Java) and GPU (OpenCL) key generation strategies.

  • Group ID: net.ladenthin
  • Artifact ID: bitcoinaddressfinder
  • Version: 1.9.0-SNAPSHOT
  • Java: 21
  • License: Apache 2.0
  • Author: Bernard Ladenthin (Copyright 2017–2025)
  • Main class: net.ladenthin.bitcoinaddressfinder.cli.Main

Build System

The project uses Maven (minimum 3.6.3). There is no Maven Wrapper in this repository — mvnw / mvnw.cmd do not exist, so use an installed mvn. Commands below are written that way; a wrapper could be added later, but until it is, ./mvnw ... fails outright.

Common Commands

# Compile only
mvn compile

# Run all tests
mvn test

# Build fat JAR with all dependencies
mvn package -P assembly

# Build without tests
mvn package -DskipTests

# Generate coverage report
mvn test jacoco:report

# Skip LMDB-specific tests (useful when LMDB native libs unavailable)
mvn test -Dnet.ladenthin.bitcoinaddressfinder.disableLMDBTest=true

JVM / Compiler Flags

Tests run with -Xmx2g (no eager -Xms — forks are short-lived, one fresh JVM per test class with reuseForks=false, so an eager initial heap only inflated the spawn-time footprint) and several --add-opens / --add-exports to allow LMDB and internal module access. These are configured in pom.xml (<argLine>) and .mvn/jvm.config.

Error Prone static analysis with NullAway is active at compile time:

  • All code in net.ladenthin packages must carry proper @Nullable / @NonNull annotations.
  • Compilation will fail on potential null-pointer issues unless annotated.

Verifying Javadoc locally (release builds)

Read the full file on GitHub · 834 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. yesterday Changed 2f7bba7f29f3
  2. 4d ago Changed · +23 lines · +361 tokens per session 22be5e47dbc6
  3. 7d ago Changed · +6 lines · +138 tokens per session 361d28e8f394
  4. 9d ago Changed 68acd66bd4a2
  5. 17d ago Changed · +10 lines · +233 tokens per session 860ca842dbb1
  6. 18d ago Changed · +2 lines · +37 tokens per session c55d73056d7f
  7. 28d ago Changed · +23 lines · +527 tokens per session 5be03ed78607
  8. 1mo ago Changed 203dafcea570
  9. 1mo ago Changed · +21 lines · +491 tokens per session 543f662e22a3
  10. 1mo ago First seen · 749 lines · 10,359 tokens per session scan A 241c788a8919

Subscribe to this mod's changes

BitcoinAddressFinder CLAUDE.md is an instructions file published in the GitHub repository bernardladenthin/BitcoinAddressFinder (247 stars, last pushed yesterday), licensed Apache-2.0. It adds 12,146 tokens to every session, about $0.0486 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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