Pith Number

pith:BBRFHTS5

pith:2011:BBRFHTS5E62KYOXLCOFUDE5TCE

not attested not anchored not stored refs pending

Aftermath

Peter J. Cameron

arxiv:1111.4050 v1 · 2011-11-17 · math.HO · math.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{BBRFHTS5E62KYOXLCOFUDE5TCE}

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	2026-05-18T04:08:12.072442Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

086253ce5d27b4ac3aeb138b4193b311236b67abca16d37a3d9d5b17f471ba78

Aliases

arxiv: 1111.4050 · arxiv_version: 1111.4050v1 · doi: 10.48550/arxiv.1111.4050 · pith_short_12: BBRFHTS5E62K · pith_short_16: BBRFHTS5E62KYOXL · pith_short_8: BBRFHTS5

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/BBRFHTS5E62KYOXLCOFUDE5TCE \
  | 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: 086253ce5d27b4ac3aeb138b4193b311236b67abca16d37a3d9d5b17f471ba78

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7a04a5e364c642971f9246f176e5336829a8a957c3819944ee554ab0210ef52d",
    "cross_cats_sorted": [
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.HO",
    "submitted_at": "2011-11-17T10:31:44Z",
    "title_canon_sha256": "bf648e312779342bb0c687654e34338830c9a6df999f1d64bf3e2237e93e222a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1111.4050",
    "kind": "arxiv",
    "version": 1
  }
}