Quantum solvency · Exchange
HTX
HTX (formerly Huobi), proof-of-reserves address set
Quantum solvency
0.0%
On-chain total
7,830 BTC
Exposed
7,830 BTC
Largest exposed key
5,863 BTC
Scored from HTX monthly proof-of-reserves snapshot, GitHub (2026-09-30), 7 of 7 published addresses read. The holder declared 8,083 BTC at its snapshot; the chain shows 7,830 BTC now. Native bitcoin addresses only. HTX also reports wrapped bitcoin on Tron and an unaddressed third-party custody line, which cannot be scored here. Snapshot .
By exposure class
| Reused / spent (key revealed) | 7 addresses | 7,830.05 BTC |
Practical risk
An attacker must recover each key separately. 6 exposed keys hold 10 BTC or more, 7,822 BTC in total; that is the part worth attacking first, and the part to sweep to fresh keys first.
| High concentration | 3 keys | 7,663.19 BTC |
| Material | 3 keys | 158.48 BTC |
| Moderate | 1 key | 8.38 BTC |
| Small balance | 0 keys | 0 BTC |
| Not exposed | 0 keys | 0 BTC |
Largest exposed keys
| Address | Type | Why exposed | Balance |
|---|---|---|---|
| 143gLvWYUojXaW…khmr415B | P2PKH | Spent from, key revealed | 5,862.7 BTC |
| 12qTdZHx6f77aQ…aRwYjVD8 | P2PKH | Spent from, key revealed | 970.81 BTC |
| 1LXzGrDQqKqVBq…BN5s8Sbj | P2PKH | Spent from, key revealed | 829.68 BTC |
| 12AxQ3mM2rwY2m…oQGfvSVF | P2PKH | Spent from, key revealed | 80.55 BTC |
| 3EpyhpDRu2wz5L…uxYWdRkN | P2SH | Spent from, key revealed | 43 BTC |
| 1AQLXAB6aXSVbR…csbWSEjg | P2PKH | Spent from, key revealed | 34.93 BTC |
| 1HckjUpRGcrrRA…x9oYmLaZ | P2PKH | Spent from, key revealed | 8.38 BTC |
Disclosure freshness
Published this month. Read from a publication dated 2026-09-30, 19 days ago.
Custody, as observed on-chain
Of the 7,831 BTC in the 7 addresses read, 99% is spent by a single key (indistinguishable from MPC on-chain), 1% through a multisig script, and 0% has never spent, so its control is not yet visible.
| What spends it | Addresses | Balance |
|---|---|---|
| One key (or an MPC wallet, which looks the same on-chain) | 6 | 7,788 BTC |
| Multisig script 2-of-3: 43 BTC in 1 address | 1 | 43 BTC |
Read from 7 of 7 published addresses, holding 7,831 BTC, on 2026-09-30.
Repeated nonces
2,178 signatures from 7 keys across 7 addresses were checked and no nonce was repeated. For 5 busy addresses only the most recent transactions were read.
What it would take to move the exposed balance
1,534,096 unspent outputs in 3,836 transactions, about 2.7464 BTC in fees at the one-hour rate (about $229,824 at today’s price), using 1.9 days of the chain’s entire block space.
Economy · 1 sat/vB
2.7464 BTC
about $229,824
Within an hour · 1 sat/vB
2.7464 BTC
about $229,824
Next block · 2 sat/vB
5.4929 BTC
about $459,649
Each of the 1,534,096 unspent outputs is spent once into one fresh output of the same script family, in transactions of up to 400 inputs. Fee rates are mempool.space's recommendations at 2026-09-30T22:16:55.537Z. Signing ceremonies, custody procedures and withdrawal queues are not included and usually dominate.
Live badge for this reserve. It reads the latest snapshot and links back here.
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Anchored in Bitcoin
The SHA-256 of this exact snapshot, c5094361cd585da8388b315d…, was submitted to OpenTimestamps on ; the Bitcoin attestation completes within hours of the stamp and the proof upgrades on the next run. The index is timestamped on the chain it measures. The proof is included in the signed JSON.
This entry is served signed with ML-DSA-65 at /api/quantum-solvency/htx; anyone can verify it. Back to the index.