Pith Number

pith:3HVFT6HU

pith:2012:3HVFT6HU2YQIYFEETMLG33GUQC

not attested not anchored not stored refs pending

Your Facebook Deactivated Friend or a Cloaked Spy (Extended Abstract)

Shah Mahmood, Yvo Desmedt

arxiv:1203.4043 v1 · 2012-03-19 · cs.SI · cs.CY · physics.soc-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{3HVFT6HU2YQIYFEETMLG33GUQC}

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	2026-05-18T03:59:48.422427Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d9ea59f8f4d6208c14849b166decd480b8a2bb5ecdfc1258d9f5a92646073636

Aliases

arxiv: 1203.4043 · arxiv_version: 1203.4043v1 · doi: 10.48550/arxiv.1203.4043 · pith_short_12: 3HVFT6HU2YQI · pith_short_16: 3HVFT6HU2YQIYFEE · pith_short_8: 3HVFT6HU

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/3HVFT6HU2YQIYFEETMLG33GUQC \
  | 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: d9ea59f8f4d6208c14849b166decd480b8a2bb5ecdfc1258d9f5a92646073636

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "16ee4b56dc958447ca9f626a6fb9fd1c7d8826fb7169322664f8459b83b66296",
    "cross_cats_sorted": [
      "cs.CY",
      "physics.soc-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SI",
    "submitted_at": "2012-03-19T06:33:44Z",
    "title_canon_sha256": "0f57006f7557a50d60ec375ccc0457f5c4f7fafd8db790d19735c3a8a69aacac"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1203.4043",
    "kind": "arxiv",
    "version": 1
  }
}