Pith Number

pith:QSFUFKRO

pith:2012:QSFUFKROK5R4BLW5R3BFAFBHWT

not attested not anchored not stored refs pending

Extraction of Historical Events from Wikipedia

Daniel Hienert, Francesco Luciano

arxiv:1205.4138 v1 · 2012-05-18 · cs.IR · cs.DL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QSFUFKROK5R4BLW5R3BFAFBHWT}

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	2026-05-18T03:55:22.650512Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

848b42aa2e5763c0aedd8ec2501427b4e8a440a79f531d02f2f342b924277b98

Aliases

arxiv: 1205.4138 · arxiv_version: 1205.4138v1 · doi: 10.48550/arxiv.1205.4138 · pith_short_12: QSFUFKROK5R4 · pith_short_16: QSFUFKROK5R4BLW5 · pith_short_8: QSFUFKRO

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/QSFUFKROK5R4BLW5R3BFAFBHWT \
  | 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: 848b42aa2e5763c0aedd8ec2501427b4e8a440a79f531d02f2f342b924277b98

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "149f95d8372d0041a300ea301af629bb64b07385fa65e952666a4a3aea72ee1d",
    "cross_cats_sorted": [
      "cs.DL"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IR",
    "submitted_at": "2012-05-18T11:25:31Z",
    "title_canon_sha256": "f876bfdbfb497127400e97af1770b9a5999aa42b8e9c31f7bd40c8f464e7eb97"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1205.4138",
    "kind": "arxiv",
    "version": 1
  }
}