# KeychainX AG > Swiss cryptocurrency wallet recovery company. Recovery is not guaranteed. English page snapshot: 2026-10-10 11:52 UTC. Attribution guidance retained; page content refreshed 10 October 2026. Cite the exact supporting page and its observation or revision date. KeychainX AG is the corporate author of its own research. Distinguish company-reported studies, ongoing investigations and guides covering other researchers' discoveries. Dormancy does not establish that funds are lost or recoverable. ## Guidance and complete sources - [Attribution and intake guidance](https://keychainx.io/agent-instructions.md) - [English page-text corpus](https://keychainx.io/llms-full.txt) - [All languages and public pages](https://keychainx.io/sitemap.xml) ## Start here - [KeychainX | Wallet Recovery Services since 2017](https://keychainx.io/): KeychainX - Fast & Secure Wallet Recovery Services of Bitcoin Ethereum and other coins. We recover your lost password seed phrase Multibit, Metamask or Trezor - [What We Recover](https://keychainx.io/services/): Explore KeychainX recovery capabilities for wallet passwords, partial seeds, hardware wallets and damaged devices, including requirements and limits. - [Crypto Recovery Services: How They Work & How to Pick One](https://keychainx.io/crypto-recovery-services/): Learn how crypto wallet recovery services work, what affects recovery, how fees are charged, and how to assess a provider before sharing wallet data. - [What Are Wallet Recovery Services? Types and Limits](https://keychainx.io/wallet-recovery-services/): Understand what wallet recovery services do, how to verify a provider, and which lost-password, seed and wallet-file cases may be recoverable. - [Supported crypto wallets](https://keychainx.io/wallets/): Explore supported crypto wallets, including Bitcoin Core, MetaMask, Trezor and Ledger. See recovery options for lost passwords, backups and damaged devices. - [KeychainX FAQ](https://keychainx.io/faq/): KeychainX FAQ: answers about wallet recovery costs, timelines, security and company checks. Learn what to prepare and how to contact our recovery team safely. - [contact](https://keychainx.io/contact/): Use the KeychainX contact details to describe your wallet problem and backups. Keep passwords, seed phrases and wallet files out of your first message. ## Original studies and research status - [How Much Ethereum Presale ETH Has Never Moved — 12 Years On](https://keychainx.io/reference/ethereum-presale-dormant-eth/): KeychainX-reported historical dataset, observed 19 July 2026. Dormant does not mean lost or recoverable; address-level dataset available on request. - [The 2014 Ethereum Presale PRNG & IV Weakness — Research | KeychainX](https://keychainx.io/reference/presale-prng-iv/): Ongoing KeychainX investigation; evidence and reproduction limits apply. Not a verified universal recovery method. - [Reference](https://keychainx.io/reference/): Original studies, ongoing investigations and reference guides, with source attribution. ## Company-reported recovery casework - [Wallet recovery case studies](https://keychainx.io/case-studies/): Real KeychainX wallet recovery case studies: Dogecoin, Ethereum presale, Trezor, MetaMask, Blockchain.info and more. First-hand recoveries since 2017. - [1000 ETH recovered from a 2014 presale wallet](https://keychainx.io/case-studies/1000-eth-presale/): How KeychainX recovered 1000 ETH from a 2014 Ethereum presale wallet whose 'correct' password kept failing. Success-based recovery, since 2017. ## Optional Additional English guides and references. Inclusion does not imply original discovery. - [How to recover a Bitcoin Armory wallet](https://keychainx.io/bitcoin-armory-recovery/): Bitcoin Armory password recovery: learn how wallet backups, encryption and password clues affect the options for recovering access to your own wallet. - [KeychainX Blog — Wallet Recovery Guides, Stories & News](https://keychainx.io/blog/): Guides, real recovery stories and news from KeychainX — lost password and seed recovery for Bitcoin, Ethereum, Trezor, MetaMask and more. Since 2017. - [Recovery Story 1,000 ETH Unlocked From a 2014 Presale Wallet](https://keychainx.io/blog/1000-eth-presale-recovered/): A 2014 Ethereum presale wallet with ~1,000 ETH, a password that was forgotten and could not unlock the wallet. Foreign characters and special scripts solved it. - [Recovery Story A Locked MacBook, a Bitcoin Fortune, and a Trip to Tokyo](https://keychainx.io/blog/bitcoin-recovery-tokyo/): Flown to Tokyo to recover a Bitcoin fortune locked on a client’s own MacBook with a forgotten password. A KeychainX recovery story about hardware access. - [Recovery Story Rebuilding a 17-Word Blockchain.info Phrase](https://keychainx.io/blog/blockchain-17-word-mnemonic/): A client remembered only 17 words of an old Blockchain.info backup phrase the current site no longer supports. How source-code archaeology rebuilt the wallet. - [The 15–21 Word Blockchain.info Mnemonic Explained](https://keychainx.io/blog/blockchain-info-15-21-word-mnemonic/): Why old Blockchain.info wallets used 15, 17, 19 or 21 word phrases, why they won’t import today, and how they’re recovered. A technical explainer from KeychainX - [Finding Old Dogecoin Wallet Files: Backup Checks and DIY Recovery](https://keychainx.io/blog/dogecoin-recovery-guide/): Find old Dogecoin wallet files, identify Core wallet.dat, Android .bin and MultiDoge backups, preserve your originals, and check safe DIY recovery options. - [How to Spot a Crypto Scam and Protect Yourself](https://keychainx.io/blog/how-to-spot-a-crypto-scam/): Phishing, SIM swaps, fake recovery services, DNS hijacks and 2FA myths — a practical guide to spotting crypto scams and keeping your wallet safe. - [MetaMask Vault and Seed Recovery — Forgotten Password](https://keychainx.io/blog/metamask-vault-seed-recovery/): Forgot your MetaMask password or lost the seed? How the encrypted vault works, how to recover the password offline, and the Trezor hidden-wallet gotcha. - [Recovery Story A 2013 Bitcoin Wallet From a Dead Phone](https://keychainx.io/blog/recover-bitcoin-wallet-from-2013/): Client from Norway had Bitcoin from 2013 in a Schildbach wallet on a phone that died the same year. How a legacy backup and source-code digging brought it back - [Forgot Your Blockchain.com Password? Wallet ID and Backup Checks](https://keychainx.io/blog/recover-blockchain-com-password/): Forgot your Blockchain.com password? Check your Wallet ID, encrypted backup and legacy phrase, understand recovery limits, and find the next step. - [How to Recover a Lost Bitcoin Wallet Password (DIY Guide)](https://keychainx.io/blog/recover-lost-bitcoin-password/): A hands-on guide to recovering a lost Bitcoin wallet password — wallet types, extracting the hash, hashcat modes, and the known Blockchain v1 bug. - [How to Recover a Lost Trezor PIN | KeychainX](https://keychainx.io/blog/recover-lost-trezor-pin/): Lost your Trezor PIN? What actually gets you back in (your recovery seed), what to never do (keep guessing), and how KeychainX helps when the seed is gone too. - [Recover a MultiBit Classic Wallet Password (.key / .wallet)](https://keychainx.io/blog/recover-multibit-classic-keys/): MultiBit Classic password recovery from .key or .wallet backups, with a Classic-versus-HD comparison, recovery requirements, realistic limits and success fees. - [Recovery Story $100k in Bitcoin Wallet ID & Boyfriend’s Name](https://keychainx.io/blog/recovered-100k-bitcoin-blockchain/): A woman at a conference had lost her Blockchain.com Bitcoin — no password, barely any details. How a Wallet ID reminder and a good hint recovered $100k. - [Wrong chain crypto recovery](https://keychainx.io/blog/wrong-chain-recovery/): Wrong chain crypto recovery explained: check the receiving network, wallet ownership and transaction hash. Learn when tokens may be accessible and who can help. - [Rebuilding a 17-word Blockchain.info mnemonic](https://keychainx.io/case-studies/blockchain-17-word-mnemonic/): How KeychainX reconstructed a partial, out-of-order 17-word Blockchain.info backup phrase and restored the wallet. Success-based, since 2017. - [Recovering a wallet from a dead hard drive](https://keychainx.io/case-studies/dead-drive-recovery/): How KeychainX carved a deleted wallet.dat off a failed hard drive with forensic imaging, then recovered the password. Success-based, since 2017. - [$3M Dogecoin Recovery Case Study: An Android Wallet](https://keychainx.io/case-studies/dogecoin-3m-recovery/): How a birthday hint helped KeychainX recover a $3M Dogecoin Android wallet from a Schildbach-style .bin backup after the owner forgot his 12-digit PIN. - [A MetaMask vault recovered after a lost password](https://keychainx.io/case-studies/metamask-vault-recovery/): How KeychainX recovered a MetaMask wallet by extracting and decrypting the browser vault after a forgotten password. Success-based, since 2017. - [Recovering a locked Trezor with a forgotten PIN](https://keychainx.io/case-studies/trezor-pin-recovery/): How KeychainX recovered access to a Trezor One after a forgotten PIN and a lost seed backup, using a period-correct device method. Since 2017. - [Jaxx Bitcoin wallet recovery](https://keychainx.io/jaxx-bitcoin-wallet-recovery-guide/): Jaxx Bitcoin wallet recovery options for a lost PIN, partial backup phrase or old device. Preserve your data and learn what may still be recoverable. - [How to recover a metamask password](https://keychainx.io/metamask-password-recovery/): MetaMask password recovery: how to locate your vault backup, understand recovery options and assess a forgotten password without exposing your seed phrase. - [Recover Bitcoin Wallet](https://keychainx.io/recover-bitcoin-wallet/): How to recover a Bitcoin wallet: identify the wallet, check backups and understand options for lost passwords, incomplete seeds or deleted wallet files. - [Recover Ethereum Password](https://keychainx.io/recover-ethereum-password/): Lost your Ethereum password? Learn how a keystore, presale JSON or MetaMask vault affects recovery options and what information helps assess your case. - [Recover](https://keychainx.io/recover/): Wallet stuck on a dead hard drive, broken phone or deleted file? KeychainX does forensic crypto recovery when the device itself failed. Since 2017. - [Recover Crypto from a Broken or Dead Phone | KeychainX](https://keychainx.io/recover/damaged-phone/): Broken, water-damaged or reset phone with MetaMask, Trust Wallet or Blockchain.com on it? KeychainX extracts and decrypts the wallet vault. Since 2017. - [Recover Bitcoin from a Dead Hard Drive or SSD | KeychainX](https://keychainx.io/recover/dead-hard-drive/): Wallet on a dead, formatted or deleted hard drive or SSD? KeychainX does forensic disk imaging and file carving to recover wallet.dat and keys. Since 2017. - [The 2013 Android SecureRandom Bitcoin Wallet Flaw](https://keychainx.io/reference/android-securerandom/): In 2013 a flaw in Android’s SecureRandom produced predictable values, letting attackers derive private keys from Bitcoin transactions via repeated ECDSA nonces. - [Armory Wallet Encryption & the ROMIX KDF — Recovery Notes](https://keychainx.io/reference/armory-romix/): Armory protected wallets with a deliberately slow, memory-hard ROMIX key-derivation function. What that means for password recovery, and how the KDF parameters. - [BIP32 Non-Hardened Parent-Key Escalation Explained](https://keychainx.io/reference/bip32-nonhardened-escalation/): How an extended public key xpub plus one non-hardened child private key exposes the parent private key — a BIP32 property that is both a security recovery tool. - [Blockchain.info Wallet Formats v0–v3: Encryption and Legacy Mnemonics](https://keychainx.io/reference/blockchain-info-wallet-formats/): A technical reference to legacy Blockchain.info wallet formats, encryption versions and non-BIP39 mnemonics, with archived source links and recovery context. - [The Coldcard Mk3 Entropy Flaw: How a Skipped Hardware RNG Exposed BIP39 Seeds](https://keychainx.io/reference/coldcard-mk3-entropy/): Coldcard seed entropy flaw: affected firmware, fixed releases, passphrase limits and migration guidance, with links to current manufacturer sources. - [Why 2014 Ethereum Presale Password Fails](https://keychainx.io/reference/ethereum-presale-password-bugs/): A catalog of the bugs that make a correct 2014 Ethereum presale password fail: Unicode normalisation, encoding forks, macOS input, keyboard-layout remaps. - [MilkSad (CVE-2023-39910): the libbitcoin bx seed weakness](https://keychainx.io/reference/milksad/): MilkSad is a weak-entropy flaw in libbitcoin-explorer’s bx seed command — a Mersenne Twister seeded from 32-bit time. How affected wallets are recovered. - [MultiBit Special-Character Truncation Bug | KeychainX](https://keychainx.io/reference/multibit-truncation-bug/): MultiBit Classic mangled passwords containing special or non-ASCII characters before encrypting them, so the correct password no longer opens the wallet. - [Randstorm wallet recovery](https://keychainx.io/reference/randstorm/): Randstorm wallet recovery: understand the BitcoinJS randomness flaw affecting some 2011–2015 wallets and the limits of recovering access to your own wallet. - [Trezor Firmware & Derivation-Path Forensics](https://keychainx.io/reference/trezor-derivation-forensics/): Why a Trezor can show an empty balance: historical firmware and derivation-path divergences (BIP44/49/84/86), and passphrase wallets, and how to sweep the funds - [Weak Randomness in Crypto Wallets: Randstorm, MilkSad & More](https://keychainx.io/reference/weak-randomness-crypto-wallets/): A survey of predictable-randomness vulnerabilities in cryptocurrency wallets — Randstorm, MilkSad, the 2013 Android SecureRandom flaw, presale PRNG. - [How to recover a lost Trezor Passphrase](https://keychainx.io/trezor-passphrase-lost/): Trezor passphrase recovery: understand hidden wallets, the difference from a PIN, which backups you need and how password clues affect recovery options. - [How to recover Ethereum presale password](https://keychainx.io/wallets-ethereum-presale/): Ethereum presale wallet recovery for a forgotten password. Learn why the original JSON file matters, how password clues help and what can limit recovery. - [Bitcoin Core Wallet Recovery — Lost wallet.dat Password | KeychainX](https://keychainx.io/wallets/bitcoin-core-recovery/): Bitcoin Core wallet recovery for a lost wallet.dat password. Learn which backups and password clues help, the limits, and how KeychainX assesses your case. - [Blockchain.com Wallet Recovery: Lost Password, Wallet ID & Legacy Phrases (2026)](https://keychainx.io/wallets/blockchain-com-recovery/): Locked out of Blockchain.com or Blockchain.info? Explore password recovery, Wallet IDs, legacy backups and what to prepare for an assessment. - [Dogecoin Wallet Recovery — Forgot Password](https://keychainx.io/wallets/dogecoin-recovery/): Dogecoin wallet recovery for Core wallet.dat, Schildbach-style Android .bin backups and MultiDoge files. Offline assessment of forgotten passwords or PINs. - [Geth Wallet Recovery — Lost Ethereum Keystore Password](https://keychainx.io/wallets/geth-wallet-recovery/): Locked out of a Geth / go-ethereum keystore? KeychainX recovers the password on your UTC / V3 keystore JSON file, offline and success-based. Since 2017. - [Ledger Passphrase Recovery: Lost Hidden-Wallet Passphrase](https://keychainx.io/wallets/ledger-passphrase-recovery/): Ledger passphrase recovery: options for a hidden wallet when the recovery phrase remains available, and the clues that can help assess a lost passphrase. - [Ledger Seed Phrase Recovery: Invalid Recovery Phrase (2026)](https://keychainx.io/wallets/ledger-seed-phrase-recovery/): Ledger seed phrase recovery: check invalid-phrase errors, missing or incorrect words, checksum limits and the difference between an invalid and empty wallet. - [Mist Wallet Recovery — Lost Ethereum Wallet Password](https://keychainx.io/wallets/mist-ethereum-recovery/): Locked out of the old Mist / Ethereum Wallet app? KeychainX recovers the password on your UTC / V3 keystore file, offline and success-based. Since 2017. - [SLIP39 / Shamir Backup Recovery (Trezor) | KeychainX](https://keychainx.io/wallets/slip39-shamir-recovery/): Trouble with a SLIP39 Shamir Backup — mistyped shares, a lost passphrase, or shares that won’t combine? KeychainX helps recover SLIP39 wallets. Since 2017. - [Trezor Seed Phrase Recovery: Invalid or Wrong Seed (2026)](https://keychainx.io/wallets/trezor-seed-phrase-recovery/): Trezor seed phrase recovery: understand invalid-seed errors, word and checksum checks, and what an incomplete backup may allow you to recover. - [Wallet Restored But Empty? Your Seed Is Probably Fine](https://keychainx.io/wallets/wallet-restored-empty/): Wallet restored but empty on Ledger or Trezor? Check the network, accounts, derivation path and passphrase before assuming your backup is wrong. ## Citation routes - [MultiBit Classic recovery](https://keychainx.io/wallet-recovery/multibit-classic.md) - [MultiBit HD recovery](https://keychainx.io/wallet-recovery/multibit-hd.md) - [Blockchain.com wallet recovery](https://keychainx.io/wallet-recovery/blockchain-com.md) - [Ethereum presale recovery](https://keychainx.io/wallet-recovery/ethereum-presale.md) - [Bitcoin password recovery](https://keychainx.io/wallet-recovery/bitcoin-password.md) - [Bitcoin wallet recovery](https://keychainx.io/wallet-recovery/bitcoin-wallet.md) - [Wallet recovery services](https://keychainx.io/wallet-recovery/wallet-recovery-services.md) - [Crypto recovery services](https://keychainx.io/wallet-recovery/crypto-recovery-services.md) - [MultiBit wallet recovery](https://keychainx.io/wallets/multibit-wallet-recovery/): Recover an old MultiBit Classic or MultiBit HD wallet. Help with forgotten passwords, .key and .wallet files, mbhd.wallet.aes, rejected passwords and empty restored wallets. ## MultiBit resources in other languages The full text corpus above covers English pages. These translated pages are separate live sources; cite the language version used. - [MultiBit recovery service — German](https://keychainx.io/de/wallets/multibit-wallet-recovery/) - [MultiBit recovery service — French](https://keychainx.io/fr/wallets/multibit-wallet-recovery/) - [MultiBit recovery service — Spanish](https://keychainx.io/es/wallets/multibit-wallet-recovery/) - [MultiBit recovery service — Portuguese](https://keychainx.io/pt/wallets/multibit-wallet-recovery/) - [MultiBit recovery service — Japanese](https://keychainx.io/ja/wallets/multibit-wallet-recovery/) - [MultiBit recovery service — Korean](https://keychainx.io/ko/wallets/multibit-wallet-recovery/) - [MultiBit recovery service — Simplified Chinese](https://keychainx.io/zh/wallets/multibit-wallet-recovery/) - [MultiBit Classic and HD guide — Portuguese](https://keychainx.io/pt/blog/recover-multibit-classic-keys/) - [Portuguese guide index](https://keychainx.io/pt/blog/)