Pith Number

pith:7ESDYIZT

pith:2012:7ESDYIZT2WY5OUE2SPMLJKHKIG

not attested not anchored not stored refs pending

On Quantification of Anchor Placement

Richard Lau, Scott Alexander, Yibei Ling

arxiv:1201.2474 v1 · 2012-01-12 · cs.NI · cs.CC · cs.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7ESDYIZT2WY5OUE2SPMLJKHKIG}

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	2026-05-18T04:04:44.346434Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f9243c2333d5b1d7509a93d8b4a8ea41a3e5875735b0fb6e7b5622b65c506ae9

Aliases

arxiv: 1201.2474 · arxiv_version: 1201.2474v1 · doi: 10.48550/arxiv.1201.2474 · pith_short_12: 7ESDYIZT2WY5 · pith_short_16: 7ESDYIZT2WY5OUE2 · pith_short_8: 7ESDYIZT

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/7ESDYIZT2WY5OUE2SPMLJKHKIG \
  | 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: f9243c2333d5b1d7509a93d8b4a8ea41a3e5875735b0fb6e7b5622b65c506ae9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5e2080e4309fde624f5308f7cb5afc59a1141487f42cc6517b699a5aba5415df",
    "cross_cats_sorted": [
      "cs.CC",
      "cs.DS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.NI",
    "submitted_at": "2012-01-12T04:20:46Z",
    "title_canon_sha256": "c5678dbedffeae3ae9709fb1068727d3ee1884521df28578d75279427e19b5d5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1201.2474",
    "kind": "arxiv",
    "version": 1
  }
}