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.
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%)
Smartphone Wallet Reset Without Backup: 15 BTC Private Key Unverified
Software wallet
In November 2016, a user identified as 'Farer' created a Bitcoin wallet on a smartphone and accumulated 15 bitcoins. Approximately one year later, the user rese
James Howell Bitcoin Hard Drive: Decade-Long Landfill Recovery Attempt Denied
Software wallet
James Howell, a Bitcoin holder from the 2014–2015 era when Bitcoin traded below $1,000, discarded a hard drive containing his private keys while cleaning his of
Hard Drive Format Recovery: 2 BTC Restored via Sector Scanning and wallet.dat Reconstruction
Software wallet
In approximately 2015, marilyn4325 formatted a hard drive and installed Windows 10, intending to preserve wallet data via backup first. However, the backup beca
ASUS Netbook Wallet Deletion: Corrupted Files Block $9,000 Recovery Effort
Software wallet
In January 2014, Igor76200 purchased a second-hand ASUS Eee PC 1001PX netbook and created approximately 5–6 Bitcoin wallets on it on January 7, 2014. The user c
James Howell's Hard Drive: 8,000 Bitcoin Lost in Welsh Landfill
Hardware wallet (single key)
James Howell, a British-based individual, accidentally discarded a hard drive containing private keys to approximately 8,000 Bitcoin while cleaning his office a
Armory Wallet Lost via VirtualBox Snapshot Rollback—Binary Recovery Attempt
Software wallet
In October 2013, a BitcoinTalk user known as HowlingMad lost access to 6.59159344 BTC stored in Armory, a then-leading Bitcoin wallet application running on Win
Encrypted Wallet Recovery After Accidental Partition Deletion (2013)
Software wallet
On July 17, 2013, a Bitcoin holder identified as Praxis posted to a cryptocurrency forum after losing access to multiple wallet files stored in hidden Linux dir
1,000 BTC Permanently Lost After Brother Deletes wallet.dat From Shared Dropbox Folder
Software wallet
In 2017, Hacker News user illumin8 disclosed a permanent loss of 1,000 BTC resulting from a wallet file deletion in a shared Dropbox folder. The Bitcoin wallet
James Howell's 8,000 Bitcoin Hard Drive: Landfill Loss Without Backup
Software wallet
James Howell, a computer professional based in Wales, accumulated approximately 8,000 Bitcoin during the early mining era through a combination of mining and ac
Multibit Wallet Lost After Mac Reformat Without Backup
Software wallet
In November 2013, a BitcoinTalk user identified as funkonaut posted about losing access to their Bitcoin holdings following a critical self-inflicted data loss
Bitcoin-Qt Wallet Loss: Executable Backup Without Private Key File (2013)
Software wallet
TheD1ceMan, a forum user, experienced an irrecoverable loss of approximately 1.8 BTC (valued at $2,300–$2,700 USD at May 2013 market prices) due to a critical m
James Howells and the Landfill Bitcoin: Device Lost, Recovery Legally Blocked
Software wallet
James Howells, a UK resident, discarded a hard drive containing an encrypted Bitcoin wallet during a routine office clearance in 2013. The device was disposed o
Australian Miner Loses Early Bitcoin When Sole USB Backup Drive Fails Irrecoverably
Software wallet
Alex, an Australian Bitcoin miner based in Melbourne, mined Bitcoin around 2010 when mining was still a hobbyist activity with negligible monetary value. Unlike
Maxime: Hard Drive Corruption Destroyed Only Copy of Seed Phrase
Software wallet
Maxime, a Canadian journalist, began mining Bitcoin during the 2012–2013 period when the technology represented an emerging alternative financial system. He suc
Multibit Wallet Recovered From Formatted Hard Drive After 5 Years
Software wallet
In 2013, a Bitcoin holder stored funds in a Multibit wallet on a work desktop computer. The hard drive was subsequently formatted, and the user assumed the Bitc
Mac Formatted Without Backup: wallet.dat Recovery Attempt (2012)
Software wallet
On July 5, 2012, forum user Mashrock reported formatting a Mac computer running OS X 10.7 and subsequently losing access to Bitcoin stored in a wallet.dat file.
Private Key Accessible but Wallet Balance Unrecoverable: bread45's 2011 Mt.Gox Withdrawal
Software wallet
In June 2011, bread45 purchased Bitcoin on Mt.Gox and transferred coins to Bitcoin-QT desktop wallet software for self-custody. In 2012, the user accidentally d
Scattered Wallet Fragments: Passphrase Known, Decryption Blocked by Checksum Failure
Software wallet
Between 2011 and 2012, a user mined Bitcoin using Bitcoin-QT on a personal computer. Lacking technical knowledge about the software and wallet format, he delete
Unauthorized Drive Format and Corrupted Wallet File Recovery Failure (2011)
Software wallet
On September 17, 2011, a Bitcoin holder identified as cablepair discovered that an office network administrator had reformatted the hard drive of a shared offic
Formatted Computer, Lost Wallet.dat Access—Recovered via Time Machine Backup
Software wallet
On July 3, 2011, forum user Omega0255 reported a critical custody error with a 1 BTC mining pool payment. The user had formatted their SSD drive using a secure
Corrupted wallet.dat Recovery After Hard Drive Failure: 2011 Case Study
Software wallet
In May 2011, forum user zrataj (John) experienced a critical storage failure when his hard drive crashed, destroying both his primary wallet.dat file and the ba
Corrupted wallet.dat from 2011 Hard Drive — Fire Damage and Data Loss
Software wallet
In January 2021, a forum user known as 'french' reported discovering a wallet.dat file on a hard drive that had experienced both partial data erasure and fire d
Corrupted ext3 Hard Drive & Fragmented wallet.dat: HEX-Level Recovery Attempt (2011)
Software wallet
In June 2011, a Bitcoin holder identified as TurboIan reported catastrophic custody failure on a 65 GB ext3-formatted Linux hard drive. The drive suffered files
Device discarded — software wallet (2011)
Software wallet
In 2011, when Bitcoin mining was still largely a hobbyist pursuit, the user identified as 'bubbabojangles' mined 103 BTC using standard desktop equipment. At th
80 BTC Recovery After Hard Drive Format: Pywallet Raw Data Reconstruction
Software wallet
In December 2011, a BitcoinTalk user's friend experienced critical wallet inaccessibility when his computer crashed. The friend brought the machine to a technic
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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