Pith Number

pith:DRK5S4HW

pith:2015:DRK5S4HW33QLWGIJE4P2RPXAAL

not attested not anchored not stored refs pending

Forensic Analysis of WhatsApp Messenger on Android Smartphones

Cosimo Anglano

arxiv:1507.07739 v1 · 2015-07-28 · cs.CR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DRK5S4HW33QLWGIJE4P2RPXAAL}

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	2026-05-18T01:36:12.006306Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1c55d970f6dee0bb1909271fa8bee002e5aaad9f4b9de707d04adc01f4679be7

Aliases

arxiv: 1507.07739 · arxiv_version: 1507.07739v1 · doi: 10.48550/arxiv.1507.07739 · pith_short_12: DRK5S4HW33QL · pith_short_16: DRK5S4HW33QLWGIJ · pith_short_8: DRK5S4HW

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/DRK5S4HW33QLWGIJE4P2RPXAAL \
  | 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: 1c55d970f6dee0bb1909271fa8bee002e5aaad9f4b9de707d04adc01f4679be7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a2259b337b6c53f906d62be20ca8678631bf7c585f9ab1afa65d3866966026fb",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CR",
    "submitted_at": "2015-07-28T12:25:33Z",
    "title_canon_sha256": "c3b37f1ce3227149623552069fb62c83a15c3aae37f73b1604d50dda8738d0da"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1507.07739",
    "kind": "arxiv",
    "version": 1
  }
}