Pith Number

pith:4PEI7BYJ

pith:2011:4PEI7BYJAW4WZJ7JSJKUXPJBKC

not attested not anchored not stored refs pending

Anti-Structure Problems

Ram Zamir

arxiv:1109.0414 v1 · 2011-09-02 · cs.IT · 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{4PEI7BYJAW4WZJ7JSJKUXPJBKC}

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	2026-05-18T04:14:15.759937Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e3c88f870905b96ca7e992554bbd2150a0196d0148f975ac0a97b577117c3833

Aliases

arxiv: 1109.0414 · arxiv_version: 1109.0414v1 · doi: 10.48550/arxiv.1109.0414 · pith_short_12: 4PEI7BYJAW4W · pith_short_16: 4PEI7BYJAW4WZJ7J · pith_short_8: 4PEI7BYJ

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/4PEI7BYJAW4WZJ7JSJKUXPJBKC \
  | 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: e3c88f870905b96ca7e992554bbd2150a0196d0148f975ac0a97b577117c3833

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "01a5ab1bb80612567ee41f1b8a9182dfb7c0afef2df927876bc028d02475e201",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2011-09-02T11:49:13Z",
    "title_canon_sha256": "906fc5b309d0d3e574cc1596a150287616323df24e298e97de40cee6622ad7f5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1109.0414",
    "kind": "arxiv",
    "version": 1
  }
}