Pith Number

pith:P7A3H6BV

pith:2018:P7A3H6BVJ4UARZS2PFYCY4BHN5

not attested not anchored not stored refs pending

The physics of large-scale food crises

Bertrand M. Roehner, Peter Richmond, Qing-hai Wang

arxiv:1807.05100 v1 · 2018-07-13 · physics.bio-ph · physics.soc-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{P7A3H6BVJ4UARZS2PFYCY4BHN5}

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	2026-05-17T23:50:13.127099Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7fc1b3f8354f2808e65a79702c70276f71138e8c8e21e4e36120ae584b0df717

Aliases

arxiv: 1807.05100 · arxiv_version: 1807.05100v1 · doi: 10.48550/arxiv.1807.05100 · pith_short_12: P7A3H6BVJ4UA · pith_short_16: P7A3H6BVJ4UARZS2 · pith_short_8: P7A3H6BV

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/P7A3H6BVJ4UARZS2PFYCY4BHN5 \
  | 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: 7fc1b3f8354f2808e65a79702c70276f71138e8c8e21e4e36120ae584b0df717

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "56fd44a403fd79c2b7fadc8ae2f73a4656688d494f194a5521d9f7e633db003d",
    "cross_cats_sorted": [
      "physics.soc-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.bio-ph",
    "submitted_at": "2018-07-13T14:17:54Z",
    "title_canon_sha256": "7439b6e9f974a726cd3f7acce51a4a10ccae4bf0716e86b81184064e7cb250a0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.05100",
    "kind": "arxiv",
    "version": 1
  }
}