HEI

Historical Exchange Index

A quiet registry of crypto exchanges, active and gone.

Stats

Registry snapshot, coverage, and historical distributions

Snapshot counts, active-side and dead-side analysis, archive coverage, confidence, and historical distributions across the canonical HEI registry.

Last updated 2026-06-02T15:44:42.509ZSnapshot / trend / coverageEntity-level view onlyDeployment split deferred
Total entities
362
entity-level registry count
Dead-side
179
dead · merged · acquired · rebranded
Active-side
183
active · limited · inactive
Total events
525
timeline records in canonical data
Total evidence
1223
supporting evidence records
Archive coverage
100%
entities with archived URLs
High confidence
33%
entities marked high confidence
Origin known
96%
entities with country / origin data

Core analysis

Primary registry structure, active/dead composition, quality, and historical distributions.

Status breakdown

Whole-registry distribution across active-side, dead-side, and uncertain end states.

Active
157 · 43%
Limited
9 · 2%
Inactive
17 · 5%
Dead
152 · 42%
Merged
0 · 0%
Acquired
12 · 3%
Rebranded
15 · 4%
Unknown
0 · 0%

Type breakdown

Entity mix across centralized, decentralized, and hybrid exchange records.

CEX304 · 84%
DEX53 · 15%
Hybrid5 · 1%

Active analysis

Current classification, URL handling, launch timing, and evidence density on the active-side.

Active-side total
183
active · limited · inactive
Active-side archive coverage
99
182 / 183 active-side
Active-side high confidence
16
share of active-side
Active entries with launch year
132
dated active-side entries

Active-side status mix

Active157 · 86%
Limited9 · 5%
Inactive17 · 9%

URL status

Live verified44 · 24%
Live unverified118 · 64%
Redirected1 · 1%
Repurposed1 · 1%
Dead domain3 · 2%
Unknown15 · 8%

Launch year

21
2014
8
2015
2
2016
16
2017
30
2018
8
2019
3
2020
11
2021
3
2022
2
2023
2
2024
1
2025

Age bands

0–2 years3 · 2%
3–5 years16 · 9%
6–9 years57 · 31%
10+ years56 · 31%
Unknown51 · 28%

Type mix

CEX138 · 75%
DEX43 · 23%
Hybrid2 · 1%

Confidence

High30 · 16%
Medium70 · 38%
Low83 · 45%

Evidence depth

1 source87 · 48%
2–4 sources75 · 41%
5+ sources21 · 11%

Last verified recency

0–30 days53 · 29%
31–90 days130 · 71%

Dead analysis

Dead-side outcomes, end-state causes, archived coverage, and measured lifespan.

Dead-side total
179
dead · merged · acquired · rebranded
Dead-side archive coverage
100%
dead-side entities with archived URLs
Average lifespan
3.7
years where launch and death dates are both known
Dead-side with 2+ evidence
99%
178 / 179 dead-side

Dead-side status mix

Dead152 · 85%
Acquired12 · 7%
Rebranded15 · 8%

Death reason breakdown

Hack
14 · 8%
Insolvency
13 · 7%
Regulation
29 · 16%
Scam / Rug
9 · 5%
Acquisition
12 · 7%
Rebrand
17 · 9%
Voluntary shutdown
42 · 23%
Unknown
43 · 24%

Death year distribution

12
2015
7
2016
7
2017
9
2018
25
2019
22
2020
27
2021
10
2022
20
2023
11
2024
9
2025
5
2026

Evidence depth

1 source1 · 1%
2–4 sources117 · 65%
5+ sources61 · 34%

Quality & coverage

Confidence, URL handling, archive/date/domain coverage, and visible unknown-field rates.

Confidence

High119 · 33%
Medium156 · 43%
Low87 · 24%

URL status coverage

Live verified
47 · 13%
Live unverified
121 · 33%
Redirected
7 · 2%
Repurposed
11 · 3%
Dead domain
96 · 27%
Unsafe
0 · 0%
Unknown
66 · 18%

Archive / date / domain coverage

MetricValueNote
Archive coverage100%361 / 362 entities
Dead-side archive coverage100%179 / 179 dead-side
Active-side archive coverage99%182 / 183 active-side
High-confidence share33%119 / 362 entities
Launch date known78%281 / 362 entities
Death date known99%178 / 179 dead-side
Origin known96%349 / 362 entities
Original domain known100%361 / 362 entities

Unknown-field rates

MetricValueNote
Missing launch date8122% of entities
Dead-side missing death date11% of dead-side
Missing origin134% of entities
Missing original domain10% of entities

Record freshness

0–30 days84 · 23%
31–90 days278 · 77%

Registry timelines & distributions

Snapshot growth when available, plus launch-year and death-year distributions.

Snapshot history currently contains a single generated snapshot. Until multi-snapshot history is available, this section emphasizes current snapshot metrics and historical distributions.
Entities in snapshot
362
Events in snapshot
525
Evidence in snapshot
1223
Snapshot archive coverage
100%
archive coverage in current snapshot

Launch year distribution

43
2014
14
2015
10
2016
40
2017
55
2018
24
2019
11
2020
12
2021
4
2022
4
2023
3
2024
1
2025

Death year distribution

12
2015
7
2016
7
2017
9
2018
25
2019
22
2020
27
2021
10
2022
20
2023
11
2024
9
2025
5
2026

Deep breakdowns

Lower-priority drilldowns. These remain available without competing with the core analysis layer.

Country / origin

Strict-country counts are separated from bucketed origin values such as Global or ecosystem-level origins.

Expand

Strict country

Singapore
28 · 10%
United States
23 · 8%
United Kingdom
21 · 7%
Seychelles
17 · 6%
Canada
12 · 4%
Australia
10 · 3%
China
10 · 3%
Unknown
10 · 3%

Origin bucket

Ethereum ecosystem
49 · 67%
Unknown
13 · 18%
Global
11 · 15%

Country / origin × status

OriginTotalDead-sideActive-side
Ethereum ecosystem49742
Singapore281216
United States23158
United Kingdom21165
Seychelles17710
Unknown13211
Canada1284
Global1183

Country / origin × type

OriginTotalCEXDEXHybrid
Ethereum ecosystem491453
Singapore282710
United States232300
United Kingdom212100
Seychelles171700
Unknown131012
Canada121200
Global111100

Country / origin completeness

MetricValueNote
Origin present34996% of entities
Strict-country entries28980% of entities
Bucketed origin entries7320% of entities
Missing origin134% of entities

Event internals

Event type mix, impact severity, and status-effect composition from recorded timeline events.

Expand
Average events per entity
1.5
Average events per dead-side entity
2
Average events per active-side entity
0.9

Event type breakdown

Launched
101 · 19%
Rebranded
17 · 3%
Acquired
12 · 2%
Hack
25 · 5%
Exploit
8 · 2%
Withdrawal Suspended
19 · 4%
Deposit Suspended
1 · 0%
Trading Halted
13 · 2%
Service Outage
16 · 3%
Regulatory Action
25 · 5%

Impact level

Critical210 · 40%
High168 · 32%
Medium112 · 21%
Low35 · 7%

Status effect

Dead170 · 32%
Inactive21 · 4%
Limited158 · 30%
Active162 · 31%
No change7 · 1%

Evidence internals

Evidence source mix, reliability, claim scopes, and archived-share summary from the support layer.

Expand
Average evidence per entity
3.4
Average evidence per dead-side entity
4.4
Average evidence per active-side entity
2.4
Archived evidence share
100%
1223 / 1223 evidence items

Source type breakdown

Official statement
225 · 18%
Official blog
23 · 2%
Archive capture
141 · 12%
News article
402 · 33%
Court document
3 · 0%
Regulatory notice
29 · 2%
Database reference
326 · 27%
Community reference
35 · 3%
Other
1 · 0%

Reliability

High258 · 21%
Medium926 · 76%
Low39 · 3%

Claim scope

Entity
320 · 26%
Event
339 · 28%
Status
217 · 18%
Death reason
41 · 3%
Launch date
99 · 8%
Death date
33 · 3%
URL history
149 · 12%
Ownership
14 · 1%

Record completeness

Alias, notes, summary, archive, and evidence-depth coverage at the entity layer.

Expand
MetricValueNote
Aliases present52%189 / 362 entities
Notes present77%279 / 362 entities
Summary present100%362 / 362 entities
Archived URL present100%361 / 362 entities
Dead-side with 2+ evidence99%178 / 179 dead-side
Entities with 0 evidence0%0% of entities
Entities with 1 evidence24%24% of entities