Bitcoin Address Privacy Audit | Spark

Popular Addresses

Browse known Bitcoin addresses from major exchanges, protocols, and notable wallets. Select any entity to run a full privacy audit on one of their public addresses.

Boerse Stuttgart Digital

Abraxas Capital Mgmt (Heka Funds)

fund

bc1qcpflj6...ge3gvh

1 known address

CI Global Asset Management

What Is a Bitcoin Address Privacy Audit?

Bitcoin is often described as anonymous, but the reality is the opposite. Every Bitcoin transaction is broadcast to the entire network and permanently recorded on a public ledger that anyone can browse. If someone knows your address, they can see every transaction you have ever made, your current balance, and every address you have interacted with.

A privacy audit examines a Bitcoin address to determine how much information it reveals. It checks whether the address has been labeled by chain analysis firms, how many transactions it has broadcast, and how easily its activity can be traced back to a real-world identity. The more on-chain activity an address has, the larger its public footprint.

This tool gives you an exposure score for any Bitcoin address. It identifies known entities like exchanges, protocols, and high-profile wallets, then maps the transaction history to show exactly what is visible. If you have ever interacted with a labeled address, your wallet may already be linked to it in chain analysis databases.

The goal is simple: understand what Bitcoin's public ledger reveals about any address, and learn how to move Bitcoin without leaving a trace. Spark enables off-chain Bitcoin transfers that never touch the public blockchain: instant, free, self-custodial, and compatible with Lightning.

How It Works

The audit runs in three steps. No account required, no data collected.

Enter a Bitcoin address

Paste any Bitcoin address into the search bar above. Supports Legacy (1...), SegWit (3...), and Native SegWit (bc1...) formats.

Get an exposure score

The tool analyzes on-chain transaction history and checks against known entity databases to calculate a privacy exposure score from 0 to 100.

See the full audit

Review transaction volume, counterparty exposure, known labels, and learn what chain analysis firms can infer from the address's public activity.

Frequently Asked Questions

Can anyone see my Bitcoin balance and transactions?

Yes. Bitcoin uses a public ledger. Anyone who knows your address can see every transaction you have ever made, your current balance, and every address you have interacted with. Block explorers make this trivially easy and free.

What is a Bitcoin address privacy audit?

A privacy audit checks how exposed a Bitcoin address is on the public blockchain. It examines transaction history, known entity labels, and exposure patterns to determine how much of your financial activity is visible to chain analysis firms, exchanges, and anyone with a browser.

What is Bitcoin address clustering?

Chain analysis firms group addresses that likely belong to the same person using common-input heuristics, change address patterns, and timing analysis. Once one address in a cluster is linked to an identity via exchange KYC, the entire cluster is de-anonymized.

Can chain analysis firms identify my Bitcoin wallet?

In many cases, yes. Blockchain analytics firms maintain databases of labeled addresses built from public data, exchange disclosures, and clustering heuristics. If you have deposited to or withdrawn from an exchange that requires KYC, your address may be linked to your identity through these records.

How can I move Bitcoin without exposing my address?

Spark transfers Bitcoin ownership off-chain using statechains. The transaction never appears on the public ledger, so there is no address to look up. Spark also supports Lightning Network payments, which route through encrypted channels without leaving a permanent on-chain record. Both are self-custodial.

How do I check if a Bitcoin address is being tracked?

Every Bitcoin address with on-chain transactions is visible on the public blockchain. Chain analysis firms index the entire ledger and apply clustering techniques to group addresses by likely owner. This tool shows the exposure level for any address based on transaction count, known entity labels, and public activity.

What is a Bitcoin address privacy score?

A privacy score measures how much information a Bitcoin address reveals on the public blockchain. Factors include transaction count, total volume, links to known entities like exchanges, and how easily activity can be clustered. Higher scores mean more data is publicly accessible.

Is this tool free to use?

Yes. The Bitcoin Address Privacy Audit is completely free and requires no account. Enter any Bitcoin address to see its exposure score, transaction history, entity identification, and privacy risk factors.

Every Bitcoin transaction is permanent.

Spark moves Bitcoin off-chain. No address to look up, no transaction to trace. Instant, free, and self-custodial.

Get started with Spark How it works