CommitWatch RSS
S
← Developer activityStrong match

scgbckbone

Public commit activity attributed with strong match confidence. This page describes observable work, not personal trustworthiness.

146 commits1 monitored projects48 candidates0 high-risk analyses
Project constellation

Where the commits appear

Amber nodes are monitored by CommitWatch. Gray nodes are sampled from authenticated GitHub public commit search and may not represent complete contribution history.

Monitored External sample
Projects connected to scgbckboneA visual map of monitored and externally discovered repositories.Sdeveloper146COLDCARD firmware
Monitored evidence

CommitWatch projects

COLDCARD firmwareCoinkite146 commits48 candidates0 high risk
External discovery

Other public projects

No external sample loaded yet.

A verified GitHub handle is needed before external discovery.
Analyzed activity

Recent published watches

Message quality and risk characterize commits, never the person.

Moderate 66 AI analysisMessage 50 · Thin
CK CoinkiteCOLDCARD firmware BitcoinHardware wallets

bugfix: detect RNG_SR_SEIS and RNG_SR_SECS, retry safely, and fail closed on persistent faults

This update fixes how the COLDCARD hardware wallet's random-number generator (RNG) handles rare hardware faults. Previously, the device could silently continue using weak or repeated random numbers if the RNG reported a seed error. Now it …

RNG seed-error flag detection added (RNG_SR_SEIS, RNG_SR_SECS)Bounded retry with recovery sequence instead of silent continuationFail-closed escalation on persistent RNG faults
82ced47aby scgbckbone+117−295 files
Vendor flagged security relevance
Open full analysis →Source commit ↗
Moderate 61 AI analysisMessage 50 · Thin
CK CoinkiteCOLDCARD firmware BitcoinHardware wallets

rng: discard 12 words after SEIS clear per RM0432 32.3.7

This commit changes how the COLDCARD hardware wallet's random-number generator (RNG) recovers from a rare 'seed error' condition. The manufacturer is now following an STMicroelectronics guideline to throw away the first 12 random numbers a…

RNG recovery routine previously did not discard post-recovery outputNew behavior follows vendor reference-manual recommendation (RM0432 32.3.7)Randomness is used for cryptographic key material in a hardware wallet
43b21392by scgbckbone+33−22 files
No security note in commit
Open full analysis →Source commit ↗
Informational 15 AI analysisMessage 74 · Adequate
CK CoinkiteCOLDCARD firmware BitcoinHardware wallets

docs: why RNG clock errors don't invalidate RNG_DR

This commit only adds explanatory comments to two source files about why the COLDCARD firmware ignores certain hardware random-number-generator clock-error flags. It does not change any code behavior. The comments cite ST documentation say…

6e403982by scgbckbone+15−02 files
No security note in commit
Open full analysis →Source commit ↗
Low 38 AI analysisMessage 45 · Thin
CK CoinkiteCOLDCARD firmware BitcoinHardware wallets

limit BIP-322 msg length to 330 chars

This commit adds a 330-character limit to BIP-322 proof-of-reserve messages on the COLDCARD hardware wallet. Without the limit, an attacker could craft a very long message that might be used to mislead the user, overflow display buffers, o…

Input length bound added to user-facing signed messageAssertion failure prevents processing of oversized messagesEmpty message already rejected; documentation now also requires non-empty message
b29d2347by scgbckbone+41−13 files
No security note in commit
Open full analysis →Source commit ↗
Low 27 AI analysisMessage 45 · Thin
CK CoinkiteCOLDCARD firmware BitcoinHardware wallets

apply note or pwd as b39 passphrase

This commit adds a new feature to the COLDCARD hardware wallet that lets users apply the text of a Secure Note or the value of a Secure Note password as their BIP-39 wallet passphrase. It also tightens how printable ASCII is checked in a f…

New feature exposes stored Secure Notes / Passwords as BIP-39 passphrasesInput validation relies on length, printable-ASCII, and rstrip of trailing whitespace/tab/newlineRefactored text sanitization changes control-flow for message signing and PSBT message warnings
0ef6413cby scgbckbone+223−289 files
No security note in commit
Open full analysis →Source commit ↗
Low 43 AI analysisMessage 50 · Thin
CK CoinkiteCOLDCARD firmware BitcoinHardware wallets

BIP-322 changes after BIP got in to the complete state

This commit updates COLDCARD's BIP-322 (Bitcoin message signing / proof-of-reserves) implementation to match the finalized BIP-322 specification. The main user-visible change is that the message to be signed must now be embedded directly i…

BIP-322 message now embedded in PSBT and verified against reconstructed to_spend, reducing reliance on external/user-supplied message filesBIP-322 PSBTs are explicitly prevented from being finalized into broadcastable transactionsHSM policy now applies message-signing path restrictions to BIP-322 PSBTs
d656f371by scgbckbone+1106−61015 files
No security note in commit
Open full analysis →Source commit ↗
Informational 15 AI analysisMessage 57 · Thin
CK CoinkiteCOLDCARD firmware BitcoinHardware wallets

docs: index all docs and fix drift vs firmware

This commit is purely a documentation update. It adds missing entries to the docs index, updates outdated examples and menu trees, fixes a broken filename reference in a code comment, and corrects factual details (such as supported models …

8e3bbfdfby scgbckbone+139−8315 files
No security note in commit
Open full analysis →Source commit ↗
Moderate 66 AI analysisMessage 28 · Opaque
CK CoinkiteCOLDCARD firmware BitcoinHardware wallets

bundle small fixes

This is a large bundle of bug fixes for the COLDCARD hardware wallet firmware. Most changes fix user-interface crashes ('yikes'), incorrect error messages, or policy edge cases rather than a single critical vulnerability. The most security…

HSM mode now disables NFC and Virtual Disk peripherals to reduce USB/NFC attack surfaceSingle-Signer Spending Policy unlock no longer accepts a zero-secret bypass PIN as the 'main PIN'OP_RETURN and non-standard scripts are no longer hidden as 'null-data' during transaction review
c36eac23by scgbckbone+1486−28548 files
Vendor flagged security relevance
Open full analysis →Source commit ↗
Low 48 AI analysisMessage 45 · Thin
CK CoinkiteCOLDCARD firmware BitcoinHardware wallets

bugfix: Delta Mode Trick PIN restore from backup

This commit fixes a bug where a special security feature called 'Delta Mode Trick PIN' was not being restored when a user restored their Coldcard wallet from a backup. A Trick PIN is a decoy PIN that can do things like show a fake wallet o…

Functional bug in security feature (Trick PIN restore)Silent failure due to bare exception handlerMismatch between function return value and caller (tuple unpack)
be614dabby scgbckbone+235−1306 files
Vendor flagged security relevance
Open full analysis →Source commit ↗
Moderate 59 AI analysisMessage 0 · Opaque
CK CoinkiteCOLDCARD firmware BitcoinHardware wallets

WIF Store

This commit adds a new 'WIF Store' feature to the COLDCARD firmware. It lets users import external Bitcoin private keys (in WIF format) and use them to sign PSBT transactions and messages, alongside the device's normal seed-derived keys. T…

New feature adds persistent storage of arbitrary private keys in device settingsPSBT signing path now branches on whether a required pubkey is in the WIF storeAddress ownership verification now recognizes WIF-store addresses as 'ours'
9b131b2eby scgbckbone+1243−8222 files
No security note in commit
Open full analysis →Source commit ↗
Low 42 AI analysisMessage 38 · Opaque
CK CoinkiteCOLDCARD firmware BitcoinHardware wallets

BIP-322 msg verification

This commit adds a new user-facing verification step for BIP-322 'Proof of Reserves' messages on the COLDCARD hardware wallet. Before signing a proof-of-reserves transaction, the device now asks the user to import or type the original huma…

Adds user-verifiable message display before BIP-322 proof-of-reserves signingAdds hash-equality check between supplied message and PSBT embedded message hashIntroduces new untrusted input paths: NFC, QR/BBQR, SD card, virtual disk, and on-device keyboard for BIP-322 messages
ef2f35b1by scgbckbone+218−166 files
No security note in commit
Open full analysis →Source commit ↗
Low 37 AI analysisMessage 45 · Thin
CK CoinkiteCOLDCARD firmware BitcoinHardware wallets

BIP-322 Proof of Reserves

This commit adds support for BIP-322 Proof of Reserves signing on COLDCARD hardware wallets. It lets users prove they control certain Bitcoin addresses by signing a special non-spending transaction, without actually moving funds. The chang…

New transaction parsing path accepts nVersion=0 under a specific POR heuristicPOR detection relies on a single zero-amount OP_RETURN output (scriptPubKey == b'\x6a')POR validation parses and constrains the embedded 'to_spend' transaction from the 0th input's non-witness UTXO
5d7d5d88by scgbckbone+816−157 files
No security note in commit
Open full analysis →Source commit ↗
Moderate 63 AI analysisMessage 50 · Thin
CK CoinkiteCOLDCARD firmware BitcoinHardware wallets

address format matching from PSBT witness/redeem script instead of PSBT_XPUBs derivation paths

This change fixes how COLDCARD figures out the address format for multisig transactions. Previously it guessed based on the derivation path numbers in the PSBT's XPUB records, which can be misleading or attacker-controlled. Now it looks di…

Removed derivation-path-based address-format inference that trusted PSBT_XPUB path dataAdded script-based address-format inference from witness_script / redeem_scriptAdded N == len(self.xpubs) consistency check in multisig script parsing
ef0ba6a5by scgbckbone+154−354 files
No security note in commit
Open full analysis →Source commit ↗
Low 42 AI analysisMessage 45 · Thin
CK CoinkiteCOLDCARD firmware BitcoinHardware wallets

fix SSSP unable to find unlock policy PIN

This is a small bug fix in the COLDCARD hardware wallet's 'trick PIN' feature. Trick PINs let users set up special PINs that do things like wipe the device or unlock specific spending policies. The fix makes the device refresh its trick-PI…

State synchronization bug in security-critical PIN lookupTrick PIN / duress feature correctness fixNo explicit security framing by vendor in commit message
52e7c755by scgbckbone+1−01 file
No security note in commit
Open full analysis →Source commit ↗
Wrong identity?Names can collide and public author strings can be misleading.Contact commitwatch@karma-x.io →