Pith Number

pith:VIATEGGJ

pith:2018:VIATEGGJT4HU2VMOGYCMJATH3V

not attested not anchored not stored refs pending

A Study of WhatsApp Usage Patterns and Prediction Models without Message Content

Avi Rosenfeld, David Sarne, Or Avidov, Sarit Kraus, Sigal Sina

arxiv:1802.03393 v1 · 2018-02-09 · cs.CY · 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{VIATEGGJT4HU2VMOGYCMJATH3V}

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	2026-05-18T00:23:51.801415Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

aa013218c99f0f4d558e3604c48267dd4432085e83610c9ee1917efdac3100f4

Aliases

arxiv: 1802.03393 · arxiv_version: 1802.03393v1 · doi: 10.48550/arxiv.1802.03393 · pith_short_12: VIATEGGJT4HU · pith_short_16: VIATEGGJT4HU2VMO · pith_short_8: VIATEGGJ

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/VIATEGGJT4HU2VMOGYCMJATH3V \
  | 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: aa013218c99f0f4d558e3604c48267dd4432085e83610c9ee1917efdac3100f4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d174bf81ed940c3abf67f8b2285be23481cac721456558183bacea0266170865",
    "cross_cats_sorted": [
      "cs.SI"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CY",
    "submitted_at": "2018-02-09T13:18:56Z",
    "title_canon_sha256": "fd47181938884470999e8692c2da059a0194ff388cc8adcd12014392ba2b88b7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.03393",
    "kind": "arxiv",
    "version": 1
  }
}