Cold Wallet Log Assembly

Who this is for

Holders who keep assets on hardware wallets, paper seed backups, or air-gapped machines and need a documented transaction history for South Korean tax filing or cross-border reporting. Common clients include self-employed professionals, expatriates with dual filing obligations, and long-term holders who never maintained exchange-linked records.

What is included

Intake interview covering wallet types, acquisition dates, and known migrations between cold storage formats
Collection and normalization of device-native exports (Ledger, Trezor, Coldcard, and similar)
On-chain verification of each listed transaction with date, amount, fee, and counterparty notation
Chronological reference log in CSV with a human-readable PDF summary
Annotated transfer map showing movement between wallets and external addresses
One revision round for discrepancies flagged by your accountant or tax preparer

What is excluded

Tax calculation or filing on your behalf — we deliver reference documentation only
Recovery of lost seed phrases or inaccessible wallets
Legal interpretation of reporting obligations in any jurisdiction
Ongoing monitoring beyond the assembly engagement period

Process

Intake call (30–45 minutes): We document your wallet inventory, holding periods, and filing jurisdiction.
Export submission: You provide device exports, paper note photographs, or air-gapped file transfers via our secure intake channel.
Assembly: Our analysts reconcile exports against blockchain records, resolving gaps and flagging ambiguities.
Draft delivery: You receive preliminary logs within the stated timeline for your review.
Revision and final: One included revision round; final package delivered in agreed formats.

Preparation

Before intake, gather any hardware wallet export files, photographs of paper backup notes showing transfer dates, and a list of chains you have used. If you migrated between wallets, note approximate dates even if exact timestamps are unknown.

Pricing basis

Starting at ₩480,000 for a single hardware wallet with up to three chains. Additional wallets, complex migration histories, or DeFi interaction layers are quoted after intake based on estimated analyst hours.