Ledger offerings · Secure Data

We work with holders who already use cold storage and need a durable, reviewable record of addresses and unspent outputs. Sessions take place in Yeouido or at a location you arrange. We never take custody of coins or seed material.

Half day to two days · From ₩450,000 per engagement

UTXO Ledger Audit & Rebuild

A full review of your offline UTXO list against known addresses, with a rebuilt paper or air-gapped ledger you keep.

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90 minutes to half day · From ₩180,000 per visit

Address Registry Maintenance

Ongoing care for your receive-address register — labeling, retirement, and inheritance-ready indexes without touching keys.

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60–120 minutes · From ₩120,000 per session

Reconciliation Sessions

Periodic matching of your offline ledger against device-visible UTXOs after spends, receives, or long gaps.

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