Features | Clams

On-chain Bitcoin

Every address type, every wallet shape

Track everything Bitcoin can produce on-chain: modern and legacy address types, multisig, descriptor wallets, and the fee mechanics that come with them.

Taproot (P2TR): Full support for the modern address type.
Native SegWit (P2WPKH): Bech32 single-sig wallets.
Nested SegWit (P2SH-P2WPKH): Backwards-compatible SegWit.
Legacy (P2PKH): Original base58 addresses.
Multisig (P2WSH, P2SH, P2TR): Reconciled automatically. No manual matching.
Output descriptors: Import any descriptor-defined wallet.
Extended public keys: Watch-only via xpub / ypub / zpub.
Hardware wallets: Coldcard, Trezor, Ledger, BitBox02, Jade, Passport, and more.
Software wallets: Sparrow, Electrum, BlueWallet, Wasabi, Specter, Nunchuk, and more.
Collaborative custody: Unchained, Casa, and more via descriptor.
Smart transfer matching: Internal moves between your wallets are detected, not double-counted.
Fee accounting: Network fees tracked per transaction and per wallet.

View supported wallets →

Lightning Network

Track the channel, not just the payment

Lightning isn't a black box. Clams accounts for the underlying channel mechanics: opens, closes, HTLC resolution, and the on-chain footprint that ties them all together.

Channel opens: Single-funded and dual-funded (interactive tx construction).
Cooperative closes: Standard mutual-close settlement.
Force closes: Unilateral closes with delayed-output tracking.
Anchor outputs: Modern channel type with fee-bumping anchors.
HTLC roles: Offered, received, timeout, and success scripts classified per channel.
Revoked-state detection: Penalty transactions identified.
On-chain ↔ channel matching: Channel funding, closes, and sweeps tied back to your wallet activity.
Core Lightning: Connect via Rune authentication.
LND: Connect via gRPC or Lightning Node Connect (LNC).
NWC nodes: Alby Hub, Zeus, and any Nostr Wallet Connect implementation.
Mobile wallets: Phoenix, Wallet of Satoshi, and more via CSV export.

See Lightning integrations →

Accounting & tax

Double-entry books, audit-ready exports

A real ledger underneath, not a spreadsheet of trades. Cost-basis methods, capital-gains reporting, and the journal entries that make your books defensible.

Double-entry ledger: Every transaction posts balanced debits and credits.
FIFO cost basis: First-in, first-out lot tracking.
LIFO cost basis: Last-in, first-out lot tracking.
HIFO cost basis: Highest-in, first-out lot tracking.
Capital gains report: Realised gains by lot, with date ranges.
Holding-period days: Per-lot day counts ready for jurisdiction-specific short- and long-term classification.
Balance sheet: Position snapshot at any point in time.
Balance history: Wallet-level balances over time.
Portfolio summary: Cross-wallet position view.
Journal-entry export: Raw ledger output for downstream accounting tools.
Auto-categorization: Smart defaults with full manual override.
Notes and tags: Annotate any event and group transactions with custom metadata.
Manual reconciliation: Resolve quarantined events with explicit fee, mode, and counterparty inputs.
Multi-currency price data: Historical fiat prices for cost-basis valuation.
Reconciliation: Catch errors before they reach your books.

Run reports from the CLI →

Enterprise & control

Built for teams, audits, and scale

Workspaces, permissions, and audit trails for organisations that need more than a single user with a CSV export. Run it where you need it: local, self-hosted, or managed.

Workspaces: Isolate clients, entities, or teams.
Profiles: Multiple books per workspace, scoped independently.
Role-based access control: Workspace and profile permissions granted per user.
Single sign-on: OAuth via Apple, Google, and magic-link.
Audit trail: Canonical records and full journal-entry exports on demand for ledger inspection.
Multi-client view: Workspaces and profiles built for accountants serving many clients.
Unlimited wallets and accounts: No seat or wallet caps.
Millions of transactions: Built to handle full institutional history.
Real-time updates: Wallets sync continuously, no manual refresh.
Local CLI: Run everything on your own machine, no network required.
Self-hosted Server: Deploy Clams inside your own infrastructure.
Managed Cloud: Hosted Clams with the same engine underneath.
Portable data: Export cleanly between deployments. Never locked in.
Priority support: Direct access to our team with guaranteed response times on the enterprise tier.
Early access: First look at new features and direct input on the roadmap.

Explore enterprise → Compare deployments →

Data & integrations

Connect anything, export everything

Native connection methods cover most wallets out of the box. CSV mapping handles the rest. Output is scriptable in whatever format your downstream tools speak.

Output descriptors: Native multisig and single-sig descriptor import.
Extended public keys: Watch-only via xpub / ypub / zpub.
Rune: Core Lightning authentication.
gRPC: Direct LND connection with TLS cert and macaroon.
LNC: Lightning Node Connect for LND and Voltage.
NWC: Nostr Wallet Connect for Alby, Zeus, and compatible nodes.
CSV import: With custom field mapping for any wallet.
JSON archives: Full data import and export.
Real-time sync: Continuous updates from connected wallets.
Checkpoint tracking: Efficient incremental sync, not full re-scans.
CSV export: Tax-software-ready output.
JSON / YAML / table output: Pipeable from the CLI.
REST API: Programmatic access via the Server interface.
Machine-readable CLI spec: Auto-generated tooling for scripts and agents.
Cron-friendly: Schedule reconciliation and reports as background jobs.

Across the ecosystem. Hardware wallets, software wallets, Lightning nodes, exchanges, payment processors, and collaborative custody. See the full list →

Everything Clams supports