Review、Remediation、Upgrades

Review

コア技術・セキュリティ評価

GreyBound Review is a technical and security assessment of a Bitcoin system that already exists: wallet, signing path, node, backend, indexer, or side chain. Do this before mainnet funds or a public launch. The client gets an executive summary, a risk register, a remediation roadmap, and a validation plan. This is not a public contest report.

Review is for architecture and trust boundaries. Remediation is for issues already named. Upgrade is for new features in a product that already runs.

クライアントが受け取るもの：

• Executive Summary（全体のシステム状態、主要リスク、即時優先事項、目標に対する readiness）
• Findings / Risk Register（問題、影響コンポーネント、技術影響、セキュリティ/信頼性影響、重大度、証拠、悪用/障害に必要な条件、推奨 remediation）
• Prioritized Remediation Roadmap（優先 Remediation ロードマップ）
• Architecture / Engineering Recommendations（アーキテクチャ / エンジニアリング提言）
• Validation Plan（テスト、セキュリティ検証、設定チェック、回帰チェック、必要に応じた再 Review）

Remediation

技術・セキュリティ問題の是正

GreyBound Remediation fixes Bitcoin infrastructure issues the client already knows or that Review found. The work is code, configuration, architecture, and operations on the running system, then checks and handoff.

クライアントが受け取るもの：

• Scoped Fix Plan（合意した問題リスト、優先順位、受入基準、変更リスク）
• Implemented Fixes（必要に応じたコード、設定、アーキテクチャ、運用変更）
• Verification Evidence（テスト、セキュリティチェック、設定チェック、回帰結果）
• Change Documentation（何が変わったか、理由、運用方法、残存リスク）
• Handoff for Follow-up（次の明確なステップ。必要なら対象を絞った再確認や再 Review）

Upgrades

機能開発とプロダクト強化

GreyBound adds features to a Bitcoin wallet or signing stack that already ships. The work goes into the live codebase: descriptors, PSBT flows, multisig, hardware-signer paths, fee and coin selection, and the backend or indexer the wallet uses.

This is for

• a mobile, desktop, or extension Bitcoin wallet that already exists
• a signing service or non-custodial payments path that already exists
• Bitcoin or a side chain the client already runs

This is not for

• building a new wallet from nothing
• a template wallet for many chains

クライアントが受け取るもの：

• Feature Scope & Design（要件、インターフェース、制約、Bitcoin/セキュリティ考慮）
• Implementation on the Existing Product（既存コードベースへの機能実装。ゼロからの書き換えではない）
• Tests & Validation（ユニット/統合カバレッジ、セキュリティ関連チェック、回帰保護）
• Documentation & Handoff（機能の動作、運用方法、拡張方法）
• Upgrade Path Notes（ロールアウト、互換性、変更の本番 readiness）

What we need from you

To start, we need the running system:

• what is live today
• what must not break
• what you want changed or proved
• who can answer questions on the repo

If the system signs or moves bitcoin, we need enough of the signing path to trace one transaction from screen to bytes. If you cannot share that yet, say so. We will say what we can still do.

What the work is

A Review maps trust boundaries and names what can lose funds.

Remediation changes the running code or config and shows the check.

An Upgrade adds a feature in that same codebase.

What we decline

We do not produce a public audit PDF meant only for a launch page.

We do not take a chain we do not operate.

We do not build a new wallet from nothing for every network.

Email contact@greybound.tech. We reply in 1–2 business days.