# Checking Bitcoin wallet downloads and software signatures Download a Bitcoin wallet from the project’s documented distribution channel and follow its release-verification instructions. A checksum compares bytes; a digital signature can authenticate those bytes to a particular signing key. You must also establish that the key is the expected publisher’s. Neither check proves the program has no bugs or that every action requested inside it is safe. Evidence: [Download Bitcoin Core](https://bitcoincore.org/en/download/); [Electrum Bitcoin Wallet](https://electrum.org/); [Securing your wallet](https://bitcoin.org/en/secure-your-wallet) Canonical: https://degreesofsatoshi.com/encyclopedia/bitcoin-wallet-software-authenticity/ Published: 2026-10-02 Substantively modified: 2026-10-02 Independently verified by an automated reviewer: 2026-10-02T19:29:20.637Z Data current through: 2026-10-02 AI-assisted research and drafting with a separate automated source-verification pass; no external expert or named human review is implied. ## Key facts - **Checksum:** Detects a mismatch against a trusted expected digest ([Download Bitcoin Core](https://bitcoincore.org/en/download/)) - **Signature:** Authenticates the release to a signing key ([Electrum Bitcoin Wallet](https://electrum.org/)) - **Trust question:** Is that the expected publisher key? ([Electrum Bitcoin Wallet](https://electrum.org/)) ## Start with the project, not an unsolicited update prompt A search advertisement or support message can point to an imitation download. Obtain the distribution instructions through the project’s established site and check the exact operating-system package and version. Do not use a recovery phrase as a software-verification input. Electrum’s site explains that signatures can expose a replaced download even if the attacker changes the executable. That protection depends on verifying against a trusted developer key rather than a replacement key supplied alongside the malicious file. Evidence: [Electrum Bitcoin Wallet](https://electrum.org/); [Download Bitcoin Core](https://bitcoincore.org/en/download/) ## Compare authenticity and integrity separately Suppose a download’s hash matches a digest copied from the same compromised page. Both could have been replaced together. A valid signature from an independently authenticated expected key adds a different check: that key authorized the signed release material. A signature verification tool may report a mathematically valid signature while also saying the key is not certified through its trust database. Those are different findings. Resolve key identity through the project’s documented process rather than suppressing the warning blindly. Evidence: [Download Bitcoin Core](https://bitcoincore.org/en/download/); [Electrum Bitcoin Wallet](https://electrum.org/) ## Verification is one step in a safe update Read release and compatibility notes, preserve the wallet’s required backups, and use a supported upgrade path. A valid official release can still contain defects, and an older file format may not be readable after an unsupported downgrade. Record the version you installed and the verification outcome. Recheck new downloads instead of assuming that trusting a previous release authenticates every future file with a similar name. Evidence: [Securing your wallet](https://bitcoin.org/en/secure-your-wallet); [Frequently Asked Questions](https://electrum.readthedocs.io/en/latest/faq.html) ## Questions ### Does a matching file hash prove the wallet is genuine? Only if the expected hash itself comes from a trustworthy authenticated source. An attacker controlling both the file and the displayed checksum can make them agree. Signature verification with the expected publisher key addresses a separate authenticity question. Evidence: [Download Bitcoin Core](https://bitcoincore.org/en/download/); [Electrum Bitcoin Wallet](https://electrum.org/) ### Does a valid release signature mean the software is bug-free? No. It links signed bytes to a key under the signature scheme. It does not audit the source code, prove every build assumption or guarantee that the application cannot be misused. Evidence: [Electrum Bitcoin Wallet](https://electrum.org/); [Securing your wallet](https://bitcoin.org/en/secure-your-wallet) ## Claims and scope ### bitcoin-wallet-software-authenticity-quick-answer Download a Bitcoin wallet from the project’s documented distribution channel and follow its release-verification instructions. A checksum compares bytes; a digital signature can authenticate those bytes to a particular signing key. You must also establish that the key is the expected publisher’s. Neither check proves the program has no bugs or that every action requested inside it is safe. Educational explanation. Product-specific behavior is scoped to the cited documentation, checked 2026-10-02. Scope: {"collection":"bitcoin","dataAsOf":"2026-10-02","blockHeight":null} ### bitcoin-wallet-software-authenticity-fact-checksum Checksum: Detects a mismatch against a trusted expected digest Scope: {"collection":"bitcoin","dataAsOf":"2026-10-02","blockHeight":null} ### bitcoin-wallet-software-authenticity-fact-signature Signature: Authenticates the release to a signing key Scope: {"collection":"bitcoin","dataAsOf":"2026-10-02","blockHeight":null} ### bitcoin-wallet-software-authenticity-fact-trust-question Trust question: Is that the expected publisher key? Scope: {"collection":"bitcoin","dataAsOf":"2026-10-02","blockHeight":null} ## Sources - [Download Bitcoin Core](https://bitcoincore.org/en/download/) — Bitcoin Core. Current official distribution and binary verification instructions; do not infer third-party package safety. Locator: Verify your download. Retrieved: 2026-10-02T18:53:56.631Z. - [Electrum Bitcoin Wallet](https://electrum.org/) — Electrum. Official wallet distribution and signature verification trust boundaries. Locator: Sources and Binaries; How to verify GPG signatures. Retrieved: 2026-10-02T18:53:56.639Z. - [Securing your wallet](https://bitcoin.org/en/secure-your-wallet) — Bitcoin.org. Backup scope, online exposure, offline signing, custody and software update practices. Locator: Be careful with online services; Backup your wallet; Encrypt your wallet; Offline wallet for savings; Hardware wallets; Keep your software up to date. Retrieved: 2026-10-02T18:53:53.659Z. - [Frequently Asked Questions](https://electrum.readthedocs.io/en/latest/faq.html) — Electrum. Electrum-specific sweep/import distinctions, seed recovery scope and address discovery. Locator: Does Electrum trust servers?; Can I import private keys from other Bitcoin clients?; Can I sweep private keys from other Bitcoin clients?; What is the gap limit?; How do I upgrade Electrum?. Retrieved: 2026-10-02T18:53:56.378Z. ## Revision history - 2026-10-02: First publication after primary-source research and separate automated verification. ## Cite this entry Degrees of Satoshi editorial project. “Checking Bitcoin wallet downloads and software signatures.” Published 2026-10-02; updated 2026-10-02. https://degreesofsatoshi.com/encyclopedia/bitcoin-wallet-software-authenticity/