Pith Number

pith:CBWWBYBZ

pith:2013:CBWWBYBZNSZRQUQAKS2Y33NQER

not attested not anchored not stored refs pending

Naturally Rehearsing Passwords

Anupam Datta, Jeremiah Blocki, Manuel Blum

arxiv:1302.5122 v5 · 2013-02-20 · 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{CBWWBYBZNSZRQUQAKS2Y33NQER}

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	2026-05-18T03:13:46.087008Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

106d60e0396cb318520054b58dedb02473f78b10ccbe1b4d5c861ff44ddd78af

Aliases

arxiv: 1302.5122 · arxiv_version: 1302.5122v5 · doi: 10.48550/arxiv.1302.5122 · pith_short_12: CBWWBYBZNSZR · pith_short_16: CBWWBYBZNSZRQUQA · pith_short_8: CBWWBYBZ

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/CBWWBYBZNSZRQUQAKS2Y33NQER \
  | 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: 106d60e0396cb318520054b58dedb02473f78b10ccbe1b4d5c861ff44ddd78af

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ce1b5ed4446d07c010aa2af8f59b6ebf0969714edbe27b300fc464f5b447fceb",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CR",
    "submitted_at": "2013-02-20T21:16:43Z",
    "title_canon_sha256": "103b90c8336c22051cbd1cb5c27cac88f61273e789749e64a446fe54b3c60616"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1302.5122",
    "kind": "arxiv",
    "version": 5
  }
}