Part of the CustodyStress archive of observed Bitcoin custody incidents
Passphrase Never Recorded
Cases where a BIP39 passphrase was set during wallet creation but never written down or stored separately from the seed phrase. The passphrase was required to derive the correct extended keys.
passphrase never recorded cases have a 45% survival rate among determinate outcomes — one of the higher recovery rates in the archive. The most common recovery path is no path available.
6
Blocked
0
Constrained
5
Survived
26
Indeterminate
55% of determinate cases resulted in blocked or constrained access.
37 observed cases
Blocked
6 (16%)
Survived
5 (14%)
Indeterminate
26 (70%)
Block.io Permanent Loss: Forgotten PIN and Missing Secret Mnemonic Backup
Exchange custody
In February 2016, a BitcoinTalk user identifying as CaRLoSXXX posted a distress message after losing access to their Block.io wallet. Block.io is a non-custodia
Bitcoin-Qt Passphrase Encoding Mismatch: Known Password Rejected Across Versions
Software wallet
StaleCoinz created a Bitcoin-Qt wallet on macOS in 2013 and encrypted it in 2015 using a passphrase he distinctly remembered. When he attempted to access the wa
Lost BIP38 Passphrase on Paper Wallet: 256 Case Combinations, No Documentation
Software wallet
In March 2015, a user known as 'germanuniv' created a paper wallet using bitaddress.org with BIP38 encryption enabled. To generate the passphrase, the user deri
Zombie Paintball Incident: Written Password Loss Blocks Access to $20K Bitcoin
Software wallet
Luke purchased his first Bitcoin around 2013 for approximately $200 and continued accumulating holdings over roughly two years, investing between $15,000 and $2
Blockchain.info iOS Wallet: $3,600 Lost to Missing Mnemonic and Unresettable Password
Exchange custody
In September 2015, TheLoser created a Bitcoin wallet on Blockchain.info using an iOS mobile device. Unlike documented Blockchain.info workflows, the wallet crea
0.3 BTC Lost After Uninstalling Blockchain.info Desktop Wallet Without Backup
Exchange custody
In June 2015, a user identified as Williams2017 received approximately 0.3 BTC (then valued at roughly $70 USD) from an entity called 'www.instantgold.ng' to th
Ruairi's Lost Paper Backup: €80 Bitcoin, Both Credentials on One Document
Software wallet
Ruairi purchased approximately €80 worth of Bitcoin in late 2015, driven by curiosity about the emerging technology and its associations with dark web markets.
Recovery of Dormant Blockchain.info Wallet via Legacy 20-Word Mnemonic (2017)
Exchange custody
Roland808, a BitcoinTalk user, discovered a text file on their computer in March 2017 dated from 2014 containing a label 'bitcoin nmemonic' followed by 20 rando
Lost Access to 2014 blockchain.info Wallets: Non-Standard Recovery Mnemonics, No Support Response
Exchange custody
In July 2020, forum user gbola reported locating five recovery mnemonics created circa 2014 when blockchain.info was in its early operations. The user's entire
KeePass Database Corruption: 11.7 BTC Locked Behind Unrecoverable Password
Software wallet
In April 2014, a BitcoinTalk user reported that their cousin had lost access to 11.7 BTC held in an encrypted wallet.dat file. The cousin had generated a strong
MultiBit 16-Word Seed Recovery Failure: Non-Standard Implementation
Software wallet
In 2014, NickyGH attended a Bitcoin wallet setup workshop in Shoreditch, London organized through a community meetup. A technician guided attendees through Mult
Blockchain.info Android Wallet PIN-Only Setup Access Failure (2013)
Exchange custody
In June 2013, a user known as NeedChangeNow created a mobile Bitcoin wallet using Blockchain.info's Android application on a Samsung Galaxy S4 running Android 4
Trigger categories
Forgotten Passphrase
Physical Coercion
Institutional Failure
Device Discarded
Seed Never Recorded
File Deleted — No Backup
Device Loss Without Backup
Owner Death
Passphrase Unavailable
Device Loss
Exchange Collapse
Exchange KYC / Account Lockout
Passphrase Loss
Credential Loss
Platform Failure
Hardware Wallet PIN Loss
File Corruption
Institutional Custody Failure
Seed Backup Unavailable
All cases