Pith Number

pith:A3EUKDD2

pith:2017:A3EUKDD2LWGHAMWLAEPRIS7ZYC

not attested not anchored not stored refs pending

Latent Estimation of GDP, GDP per capita, and Population from Historic and Contemporary Sources

Charles D. Crabtree, Christopher J. Fariss, Fridolin J. Linder, Jonathan N. Markowitz, Therese Anders, Zachary M. Jones

arxiv:1706.01099 v1 · 2017-06-04 · stat.AP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{A3EUKDD2LWGHAMWLAEPRIS7ZYC}

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	2026-05-18T00:43:04.521896Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

06c9450c7a5d8c7032cb011f144bf9c0aadccc1b3b726e670c4eab38b2bc7b3b

Aliases

arxiv: 1706.01099 · arxiv_version: 1706.01099v1 · doi: 10.48550/arxiv.1706.01099 · pith_short_12: A3EUKDD2LWGH · pith_short_16: A3EUKDD2LWGHAMWL · pith_short_8: A3EUKDD2

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/A3EUKDD2LWGHAMWLAEPRIS7ZYC \
  | 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: 06c9450c7a5d8c7032cb011f144bf9c0aadccc1b3b726e670c4eab38b2bc7b3b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "10070a0339e406a26c60df8bd677b298a743afb96af1c517302f7519cd93f0ab",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.AP",
    "submitted_at": "2017-06-04T16:22:33Z",
    "title_canon_sha256": "b019b5664fe498359b22cab6ef3c0eaf6893e1ab896c257c04707950643c6c04"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1706.01099",
    "kind": "arxiv",
    "version": 1
  }
}