Review, Remediation, Upgrades

Review

핵심 기술 및 보안 평가

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.

고객이 받는 것:

• Executive Summary (전체 시스템 상태, 주요 위험, 즉시 우선순위, 명시된 목표에 대한 준비도)
• Findings / Risk Register (문제, 영향 컴포넌트, 기술 영향, 보안/신뢰성 영향, 심각도, 증거, 악용/장애 조건, 권고 remediation)
• Prioritized Remediation Roadmap (우선 Remediation 로드맵)
• Architecture / Engineering Recommendations (아키텍처 / 엔지니어링 권고)
• Validation Plan (테스트, 보안 검증, 구성 점검, 회귀 점검, 필요 시 재검토)

Remediation

기술 및 보안 이슈 조치

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.

고객이 받는 것:

• Scoped Fix Plan (합의된 이슈 목록, 우선순위, 수락 기준, 변경 위험)
• Implemented Fixes (필요한 코드, 구성, 아키텍처, 운영 변경)
• Verification Evidence (테스트, 보안 점검, 구성 점검, 회귀 결과)
• Change Documentation (무엇이 바뀌었는지, 이유, 운영 방법, 잔여 위험)
• Handoff for Follow-up (명확한 다음 단계. 필요 시 표적 재점검 또는 재검토)

Upgrades

기능 개발 및 제품 고도화

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

고객이 받는 것:

• Feature Scope & Design (요구사항, 인터페이스, 제약, 비트코인/보안 고려사항)
• Implementation on the Existing Product (기존 코드베이스에 기능 구현. 제로베이스 재작성 아님)
• Tests & Validation (단위/통합 커버리지, 보안 관련 점검, 회귀 보호)
• Documentation & Handoff (기능 동작, 운영 방법, 확장 방법)
• Upgrade Path Notes (롤아웃, 호환성, 변경의 프로덕션 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.