Pith Number

pith:W3VMA5DD

pith:2007:W3VMA5DDIJQHUIW23FSKDJ42GX

not attested not anchored not stored refs pending

The source coding game with a cheating switcher

Anant Sahai, Cheng Chang, Hari Palaiyanur

arxiv:0712.2870 v1 · 2007-12-18 · cs.IT · cs.CV · math.IT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{W3VMA5DDIJQHUIW23FSKDJ42GX}

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	2026-05-18T01:05:13.869887Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b6eac0746342607a22dad964a1a79a35ff10201d2ed7fda5f2b21b5cc44e40ba

Aliases

arxiv: 0712.2870 · arxiv_version: 0712.2870v1 · doi: 10.48550/arxiv.0712.2870 · pith_short_12: W3VMA5DDIJQH · pith_short_16: W3VMA5DDIJQHUIW2 · pith_short_8: W3VMA5DD

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/W3VMA5DDIJQHUIW23FSKDJ42GX \
  | 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: b6eac0746342607a22dad964a1a79a35ff10201d2ed7fda5f2b21b5cc44e40ba

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9a11c16a3247ac336217958407aadb83e707fce973383221544e66110da2a49b",
    "cross_cats_sorted": [
      "cs.CV",
      "math.IT"
    ],
    "license": "",
    "primary_cat": "cs.IT",
    "submitted_at": "2007-12-18T03:31:32Z",
    "title_canon_sha256": "2f9a4fdecfb4609da3a642485c1426a4557c40104c6338c3754abb374caace87"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0712.2870",
    "kind": "arxiv",
    "version": 1
  }
}