Pith Number

pith:752MCOZT

pith:2015:752MCOZTZWDKIW7TLYHENPXLLL

not attested not anchored not stored refs pending

Can we track the geography of surnames based on bibliographic data?

Ed Noyons, Nicolas Robinson-Garcia, Rodrigo Costas

arxiv:1503.05443 v2 · 2015-03-18 · 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{752MCOZTZWDKIW7TLYHENPXLLL}

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	2026-05-18T02:20:58.723690Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ff74c13b33cd86a45bf35e0e46beeb5ae41a47a840dc649a8e4099cf6b631880

Aliases

arxiv: 1503.05443 · arxiv_version: 1503.05443v2 · doi: 10.48550/arxiv.1503.05443 · pith_short_12: 752MCOZTZWDK · pith_short_16: 752MCOZTZWDKIW7T · pith_short_8: 752MCOZT

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/752MCOZTZWDKIW7TLYHENPXLLL \
  | 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: ff74c13b33cd86a45bf35e0e46beeb5ae41a47a840dc649a8e4099cf6b631880

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b8870aa1b2edc91bb16a240f5192dccb3a8ba72f1135b25ef6e83d56cdf2ee0f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DL",
    "submitted_at": "2015-03-18T15:06:42Z",
    "title_canon_sha256": "70f18942cda92b1481983e65d9371dae9e4abbcce2ea635b4c9b997f7aabfe3d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1503.05443",
    "kind": "arxiv",
    "version": 2
  }
}