Pith Number

pith:H53KJVT5

pith:2020:H53KJVT52F2GFYPKWUWCAFUIYX

not attested not anchored not stored refs pending

Pretty Good Phone Privacy

Barath Raghavan, Paul Schmitt

arxiv:2009.09035 v3 · 2020-09-18 · cs.NI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{H53KJVT52F2GFYPKWUWCAFUIYX}

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	2026-07-05T03:50:34.026025Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3f76a4d67dd17462e1eab52c201688c5f52fef3528d8cad433b0e92ce26dea20

Aliases

arxiv: 2009.09035 · arxiv_version: 2009.09035v3 · doi: 10.48550/arxiv.2009.09035 · pith_short_12: H53KJVT52F2G · pith_short_16: H53KJVT52F2GFYPK · pith_short_8: H53KJVT5

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/H53KJVT52F2GFYPKWUWCAFUIYX \
  | 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: 3f76a4d67dd17462e1eab52c201688c5f52fef3528d8cad433b0e92ce26dea20

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "adea1f245312134020e2d131e6975e78a3cee15d26390120eec57cc25f70bbd2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.NI",
    "submitted_at": "2020-09-18T19:27:49Z",
    "title_canon_sha256": "d48fe62998e2b243838e2a16208331c97be9134d0a9066a1d9a008b450b3a90e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2009.09035",
    "kind": "arxiv",
    "version": 3
  }
}