Part of the CustodyStress archive of observed Bitcoin custody incidents
Device Discarded — Device loss
Cases where a discarded device triggered device-loss access failure. Hardware disposed of without extracting wallet keys — the most common irreversible device-loss pattern.
44 cases in this intersection. 80% of determinate cases resulted in a blocked outcome and 20% in access survived. The most common recovery path is no path available.
16
Blocked
0
Constrained
4
Survived
24
Indeterminate
80% of determinate cases resulted in blocked or constrained access.
44 observed cases
Blocked
16 (36%)
Survived
4 (9%)
Indeterminate
24 (55%)
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
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
Fragmented Wallet.dat Recovery: Disk Image Mining Loss Without Backup
Software wallet
In 2011–2012, callerman used Bitcoin-QT to mine Bitcoin on a personal computer with limited technical knowledge of cryptocurrency infrastructure. Facing disk sp
1,000+ BTC from 2010: Lost USB Drive, Corrupted Hardware, Incomplete Seed Recovery
Software wallet
In 2010, theunionjack purchased over 1,000 Bitcoin at a fraction of a cent by creating two PGP keys using GPG4Win/Kleopatra and importing them into what he beli
10,000 Bitcoin Lost When Laptop Discarded as Junk (2010)
Software wallet
In March or April 2010, while a final-year student at St. John's University in New York, an individual purchased 10,000 BTC from a local seller for approximatel
Early Bitcoin Client Wallet Partially Overwritten: File Recovery and Data Loss Analysis
Software wallet
In January 2010, furyo87 ran the Bitcoin client on a Windows machine for several days while experiencing stability issues. The user was uncertain whether any BT
1,000 BTC Lost to Repeated Hard Drive Formatting: Self-Custody Without Backup
Software wallet
In January 2017, a BitcoinTalk forum user identified as myBitcoin2009 posted a recovery request describing a custody loss rooted in the earliest era of Bitcoin
Deleted 2009-2010 Bitcoin Mining Wallet: Disk Overwrite and Recovery Failure
Software wallet
In December 2017, a BitcoinTalk user identified as idelcoins posted a detailed account of attempting to recover Bitcoin wallet files from hard disks containing
1000 BTC from 2009 Mining: Wallet Recovery After Hard Drive Reformat
Software wallet
The original poster ('unluckysoul') described losing access to approximately 1000 BTC generated during the earliest Bitcoin mining period using Bitcoin-Qt, the
James Howells' 7,500 Bitcoin: Hard Drive Lost in Newport Landfill
Software wallet
James Howells, a software engineer in Newport, South Wales, accidentally discarded a hard drive containing approximately 7,500 to 8,000 Bitcoin in the early 201
100 Bitcoin Lost on Discarded Flash Drive: Permanent Access Failure
Software wallet
During Bitcoin's early adoption phase, when the asset had negligible market value and was treated primarily as an experimental hobby, the original poster create
100 Bitcoin Lost to Discarded Flash Drive Without Backup
Software wallet
An early Bitcoin adopter stored approximately 100 bitcoins on a flash drive during Bitcoin's formative years, likely before 2013, when the asset carried minimal
The Hard Drive in the Landfill: $80 Million in Inaccessible Bitcoin
Hardware wallet (single key)
In the early years of Bitcoin adoption, a miner accumulated a substantial holding on a single hard drive. At the time of disposal, the device contained Bitcoin
James Howells: 7,500 Bitcoin Lost to Landfill Disposal Without Backup
Software wallet
James Howells stored the private keys to 7,500 Bitcoin on a standard 2.5-inch laptop hard drive, which he placed in a drawer. After several years, the drive was
Browse by trigger and stress condition
Forgotten Passphrase — Passphrase unavailable
Owner Death — Owner death
Passphrase Unavailable — Passphrase unavailable
File Deleted — No Backup — Seed phrase unavailable
Device Loss Without Backup — Device loss
Device Discarded — Seed phrase unavailable
Physical Coercion — Coercion
Exchange Collapse — Vendor lockout
Exchange KYC / Account Lockout — Vendor lockout
Seed Never Recorded — Seed phrase unavailable
Passphrase Never Recorded — Passphrase unavailable
Institutional Failure — Vendor lockout
All cases