Pith Number

pith:UHTLWVEP

pith:2018:UHTLWVEPLR4ZVZMRJR45P3CJIZ

not attested not anchored not stored refs pending

WhatsApp, Doc? A First Look at WhatsApp Public Group Data

Gareth Tyson, Kiran Garimella

arxiv:1804.01473 v2 · 2018-04-04 · cs.SI

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UHTLWVEPLR4ZVZMRJR45P3CJIZ}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T00:11:17.541367Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a1e6bb548f5c799ae5914c79d7ec49466c767c85a072e22fefb9ca2024e90afa

Aliases

arxiv: 1804.01473 · arxiv_version: 1804.01473v2 · doi: 10.48550/arxiv.1804.01473 · pith_short_12: UHTLWVEPLR4Z · pith_short_16: UHTLWVEPLR4ZVZMR · pith_short_8: UHTLWVEP

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/UHTLWVEPLR4ZVZMRJR45P3CJIZ \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: a1e6bb548f5c799ae5914c79d7ec49466c767c85a072e22fefb9ca2024e90afa

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e143da8b2d3aa3fa0d1ca8d2bfcf85ce4047747d5a602abb7da2a8525b3db920",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SI",
    "submitted_at": "2018-04-04T15:40:16Z",
    "title_canon_sha256": "38d8fe9b29ae63d3e38a83c4869c98a24bbd89b15e504cef5b2c44de850eddf0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.01473",
    "kind": "arxiv",
    "version": 2
  }
}