Part of the CustodyStress archive of observed Bitcoin custody incidents
Device Discarded
Cases where a device containing wallet data was discarded, sold, or destroyed without first securing the seed phrase or wallet backup. The private key material was lost with the device.
device discarded cases show an 81% blocked rate among determinate outcomes. In most cases no viable recovery path existed.
Archive analysis — 68 cases
Outcomes
81% of determinate cases resulted in blocked access — 12 percentage points above the archive-wide average of 69%.
Documentation coverage
60% of cases have indeterminate outcomes — higher than the archive average of 43%.
Custody type
91% of cases involved software wallet, followed by hardware wallet (single key) at 4%.
Primary stress condition
65% of cases involve device loss. Seed phrase unavailable accounts for a further 21%.
Documentation
74% of cases had partial documentation — insufficient to complete recovery without the holder's direct involvement.
Scale
18% of cases involved large or very large holdings (10+ BTC).
22
Blocked
0
Constrained
5
Survived
41
Indeterminate
81% of determinate cases resulted in blocked or constrained access.
68 observed cases
Blocked
22 (32%)
Survived
5 (7%)
Indeterminate
41 (60%)
Pre-HD Bitcoin Core Wallet Lost in OS Upgrade: Backup Strategy Failure
Software wallet
In June 2025, a Bitcoin forum user reported a custody failure involving a Bitcoin Core wallet created circa 2014, during the era before hierarchical determinist
100 Bitcoin Lost on Unbackedup USB Flash Drive: Early Adopter Custody Failure
Software wallet
A BitcoinTalk forum user known as 'oktana' disclosed in March 2024 the loss of 100 bitcoins stored on a USB flash drive. The coins were acquired during Bitcoin'
Recovering Lost Armory Wallet from Overwritten 2009-2010 Laptop Disk
Software wallet
In June 2023, a Bitcoin holder initiated a public recovery effort for an Armory wallet created in 2009–2010 on a personal laptop. The original device remained i
House Fire Destroyed Bitcoin Core Wallet Password; Backup Found Without Access
Software wallet
DuduDB and his brother jointly held Bitcoin in an encrypted Bitcoin Core wallet on a desktop computer. In late 2023 or early 2024, a residential fire destroyed
Corrupted wallet.dat Data Recovery Attempt: Multi-Tool Failure After Hard Drive Format
Software wallet
In November 2022, a Bitcoin holder discovered that a hard drive containing a wallet.dat file from approximately 2012–2014 had been formatted years earlier. Reco
Unencrypted 2010 Wallet.dat Corrupted Beyond Recovery
Software wallet
In March 2022, RBIT777 posted to a Bitcoin forum seeking help recovering a wallet created in 2010 on their hard drive. The wallet had never been encrypted—a com
Electrum Wallet Recovery Failure: Custom Extended Passphrase Lost to Platform Keyboard Layout Shift
Software wallet
In 2020, a Bitcoin holder created three Electrum wallets on Ubuntu Linux using a bootable USB drive as the sole storage medium, with no additional backups maint
2011 Bitcoin Wallet on Heavily Reused Hard Drive: Data Fragmentation and Loss
Software wallet
In June 2021, a BitcoinTalk forum user (ice-gram) reported discovering an old hard drive containing a wallet.dat file with Bitcoin purchased in 2011. The drive
Paper Wallet Destroyed in Fire: Complete Loss of BIP38 Encrypted Key, Seed Phrase, and Password
Software wallet
In February 2021, a Bitcoin user posted to the Bitcoin Forum describing the loss of a paper wallet after fire damage destroyed the physical backup. The wallet h
29 BTC Lost in Corrupted MultiBit Classic Wallet After Hard Drive Format
Software wallet
In 2014, JAMBO2014 acquired Bitcoin and stored it in MultiBit Classic 0.5.17, a desktop software wallet, without separately recording or backing up the private
Encrypted Wallet.dat Recovery After Quick Format: Hex Extraction Versus File Recovery
Software wallet
In November 2020, a user ('fajja') on BitcoinTalk discovered old hard disks that had been quick-formatted years earlier, containing Bitcoin Core wallet.dat file
Recovering a 2009–2010 Armory Wallet After Hard Drive Overwrite and Data Loss
Software wallet
In mid-2023, a Bitcoin holder initiated a recovery attempt for an Armory wallet created around 2009–2010, possibly purchased through a gaming platform. The orig
Blockchain.com Wallet Zero Balance: Seed Phrase and Backup File Present, Funds Inaccessible
Exchange custody
In late 2015, the user rory4ever created a Bitcoin wallet using Blockchain.info (the platform's name before rebranding to Blockchain.com) and deposited approxim
PIVX Encrypted Wallet Access Failure After System Update and Forced Shutdown
Software wallet
In May 2018, a user encrypted a PIVX wallet using PIVX Core version 3.1.0.2 on Windows 64-bit and confirmed the passphrase worked across multiple unlock cycles
Corrupted 2011 Bitcoin Mining Wallet: File Recovery Attempted but Balance Unverifiable
Software wallet
In September 2018, a Bitcoin forum user discovered an old wallet.dat file originating from 2011 Bitcoin mining activity on his original hard drive. After a frie
College-Era Bitcoin Miner: Wallet.dat Recovered, But Addresses Empty
Software wallet
In early 2018, a Bitcoin Forum user identified as cdcine sought help recovering Bitcoin he had mined during his college years using Bitcoin Core version 0.3.23,
Electrum Wallet Lost to Laptop Hardware Failure: No Seed Phrase Backup
Software wallet
On October 12, 2018, a BitcoinTalk forum user identified as Chabole007 reported losing access to an Electrum software wallet after their laptop experienced hard
Mobile Wallet Loss: Phone Format Destroys All Recovery Credentials
Exchange custody
On April 22, 2018, BitcoinTalk forum user Calypso_Dame reported a critical custody access failure resulting from a mobile phone format operation. The user had r
Lost Android Wallet.dat After Device Wipe and Lending — No Backup
Software wallet
In December 2017, a BitcoinTalk user identified as dandyret described losing access to a Bitcoin wallet stored on an Android phone. The user had wiped the devic
Wallet.dat Corruption After Accidental Drive Format — Recovery via Data Recovery and Pywallet
Software wallet
In July 2017, AleksTo, a newcomer to Bitcoin, accidentally formatted their hard drive, destroying the only local copy of their wallet.dat file. The user immedia
32 BTC Lost to Windows Reinstall: Wallet.dat Overwritten, Recovery Uncertain
Software wallet
In June 2017, forum user morbius55 discovered that approximately 32 BTC—valued at roughly $84,000 USD at the time—had become inaccessible after reinstalling Win
Corrupted Bitcoin QT wallet.dat: Undelete and Hex Editor Recovery Attempt
Software wallet
In March 2017, a Bitcoin user identified as Sammo619 described a custody failure involving a Bitcoin QT Core wallet created in 2014. All backups of the wallet.d
20+ Bitcoin Lost to Double Hard Drive Format; Renamed Wallet File Unrecoverable
Software wallet
Speed1987 (David) acquired at least 20 BTC in 2010 and stored the wallet file on his personal computer's hard drive. To obscure the wallet from potential attack
Lost Bitcoin on Offline IDE Drive: 2010 Purchase, 7-Year Gap, Unknown Recovery
Software wallet
Sara Smit posted to a Bitcoin forum on December 17, 2017, describing a custody failure spanning approximately seven years. She reported purchasing Bitcoin in 20
1,000+ BTC Permanently Lost: Multiple Hard Drive Formats Destroyed Wallet Data
Software wallet
In 2009, a teenager claiming to be an early Bitcoin adopter received over 1,000 BTC allegedly directly from Satoshi Nakamoto. The user stored the wallet on a de
Trigger categories
Forgotten Passphrase
Physical Coercion
Institutional Failure
Seed Never Recorded
File Deleted — No Backup
Passphrase Never Recorded
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
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