Stack Exchange — crypto.stackexchange.com

A Stack Exchange (crypto.stackexchange.com) dataset of 15,839 users, 30,734 answer-collaboration edges, 30,327 questions, 37,048 answers, collected by Stack Exchange, Inc. via the annual Stack Exchange Data Dump. Each record contains user nodes (reputation, badge counts, vote history), directed weighted edges (answerer→asker, weight=answer score, count=interactions, accepted=bool), post text, tag distribution. User collaboration network from crypto.stackexchange.com — directed weighted graph where edges represent knowledge-sharing relationships (A answered B's question), with edge weight reflecting answer quality. Enables prestige hierarchy, community detection, and expertise flow analysis.. Suitable for expertise network analysis, reputation systems, community detection, knowledge flow, PageRank-based authority ranking, Q&A platform dynamics..

#Cryptography#Expertise network#Reputation#Stack exchange data dump

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Analytics

The interactive network needs JavaScript.

· graph.json

The full graph has 15,839 nodes; this view shows the 1,000-node sample the pipeline drew for display. Node size is centrality, colour is community.

15.8K
Nodes
30.7K
Edges
1.23e-04
Density
218
Components
-0.132
Assortativity
0.7%
Reciprocity
8.9K
Bridges
Most central nodes
5550.00606
9050.00505
212600.00461
236230.00366
39410.00366
70600.00366
231150.0036
11470.00341
64040.00335
11410.00316
Content metrics

67,375 records scored · min–maxmean ± 0.675 σ (the interquartile range if the values are roughly normal)mean

scoreμ 3.653 ± 7.589
min -12max 423
view countμ 740.038 ± 4.5K
min 0max 279.5K
answer countμ 0.55 ± 0.903
min 0max 23
comment countμ 2.08 ± 2.626
min 0max 37
10.4
Flesch–Kincaid grade
US school grade level
11.6
Automated readability index
Frequent terms
keyusehashencryptionmessagebitrandomfunctionsecuritycipherbitspublicdatablockaesnumbersecurelikealgorithmkeysrsatimewayknowneedsecretvalueattackplaintextpasswordciphertextoutputpossiblequestionencryptedlengthattackerschemeprivateexamplesizeampproblem256casedifferentsignaturegivenencryptwant
Topic clusters

Topic 0

hash
function
collision
bit
preimage
resistance
output
input

Topic 1

random
entropy
bit
number
output
seed
prng
permutation

Topic 2

mode
block
cbc
cipher
plaintext
encrypt
ciphertext
byte

Topic 3

password
salt
hash
user
key
use
bcrypt
store

Topic 4

curve
elliptic
point
group
field
prime
order
discrete

Topic 5

prime
rsa
factor
modulus
exponent
number
public
key

Topic 6

cryptography
nsa
crypto
algorithm
security
cryptographic
good
like

Topic 7

mac
hmac
hash
message
function
key
secure
attack

Topic 8

knowledge
proof
zero
prover
verifier
prove
interactive
protocol

Topic 9

server
client
tls
ssl
key
protocol
certificate
send

Topic 10

alice
bob
send
key
message
public
protocol
eve

Topic 11

encryption
file
encrypt
aes
decryption
decrypt
key
text
Show all 20 topics

Topic 12

letter
cipher
character
frequency
word
text
substitution
alphabet

Topic 13

rsa
exponent
public
private
key
modulus
attack
openssl

Topic 14

field
modulo
polynomial
multiplication
element
square
root
coefficient

Topic 15

pad
time
xor
key
ciphertext
plaintext
cipher
message

Topic 16

share
secret
sharing
shamir
reconstruct
scheme
polynomial
threshold

Topic 17

homomorphic
encryption
fully
scheme
fhe
circuit
encrypt
ciphertext

Topic 18

plaintext
cipher
ciphertext
stream
attack
text
block
know

Topic 19

round
des
key
aes
schedule
bit
subkey
attack
Top hashtags
#1691
#39191
#7167
#2161
#5128
#42124
#91116
#93111
#36109
#60108
#96107
#62106
#95101
#38100
#396
#define85
#1172
#e71
#include71
#18370

Sampled: text metrics from 50K of 239.4K records; topic model from 20K.

Record

Catalog key
stackexchange-crypto-stackexchange-com
Authors
Stack Exchange, Inc.
Year
2025
Source paper
Stack Exchange Data Dump
License
CC BY-SA 2.5 / 3.0 / 4.0 (by post date) (CC-BY-SA-2.5 AND CC-BY-SA-3.0 AND CC-BY-SA-4.0)
Records
239,362
Nodes
15,839
Edges
30,734 (directed)
Nodes are
user (Stack Exchange account)
Edges are
answer collaboration (A answered B's question)
Attributes
nodes have attributes; edges have attributes
Text corpus
question titles, post bodies, comment text, tag names
Languages
en
Collected
2011/2024 (2010s, 2020s)
Tasks
From the graph: link prediction, community detection
Region
Global (inferred: the platform is used worldwide)

Provenance

Originally published at
https://archive.org/download/stackexchange link checked
Hosted copy
Mirrored on echo.directory on 2026-10-09, 99.2 MB across 1 files. Checksums in MANIFEST.json.

How to cite

BibTeX

@misc{echo2026,
  title  = {ECHO: Exploratory Compendium of Humanity Online},
  author = {Switzer, Braden and Zafarani, Reza},
  year   = {2026},
  url    = {https://echo.directory},
  note   = {Syracuse University}
}

@misc{stackexchange_2025,
  title     = {Stack Exchange Data Dump},
  author    = {{Stack Exchange, Inc.}},
  year      = {2025},
  publisher = {Internet Archive},
  url       = {https://archive.org/download/stackexchange}
}

APA

Switzer, B., & Zafarani, R. (2026). ECHO: Exploratory Compendium of Humanity Online [Data repository]. Syracuse University. https://echo.directory

Stack Exchange, Inc. (2025). Stack Exchange — crypto.stackexchange.com [Data set]. https://stackexchange-crypto-stackexchange-com.echo.directory/

MLA

Switzer, Braden, and Reza Zafarani. ECHO: Exploratory Compendium of Humanity Online. Syracuse University, 2026, echo.directory.

Stack Exchange, Inc. Stack Exchange — crypto.stackexchange.com. 2025, stackexchange-crypto-stackexchange-com.echo.directory/.

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