Pith Number

pith:CKFP7TDF

pith:2011:CKFP7TDFZWKYRQVF2ZYFV456J5

not attested not anchored not stored refs pending

Extracting, Transforming and Archiving Scientific Data

Andre Vellino, Daniel Lemire

arxiv:1108.4041 v2 · 2011-08-19 · 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{CKFP7TDFZWKYRQVF2ZYFV456J5}

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	2026-05-18T04:14:54.667048Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

128affcc65cd9588c2a5d6705af3be4f45c6c8e08168131aed6fe725a789aea0

Aliases

arxiv: 1108.4041 · arxiv_version: 1108.4041v2 · doi: 10.48550/arxiv.1108.4041 · pith_short_12: CKFP7TDFZWKY · pith_short_16: CKFP7TDFZWKYRQVF · pith_short_8: CKFP7TDF

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/CKFP7TDFZWKYRQVF2ZYFV456J5 \
  | 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: 128affcc65cd9588c2a5d6705af3be4f45c6c8e08168131aed6fe725a789aea0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5f082d331f7b9ba6e48c3a79f4c2cf0f87b1f24e4677865b1f78480c220b66e3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DL",
    "submitted_at": "2011-08-19T20:16:02Z",
    "title_canon_sha256": "473837c1b826513fb6630866bf179e34056cc1e9163e52cbbceed4db8cc1f343"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1108.4041",
    "kind": "arxiv",
    "version": 2
  }
}