Pith Number

pith:FARMHROK

pith:2019:FARMHROKHMTBV2ZUDUMPSAPDC4

not attested not anchored not stored refs pending

Geographical Distribution of Biomedical Research in the USA and China

Jing Du, Vetle I. Torvik, Yingjun Guan

arxiv:1907.05525 v1 · 2019-07-11 · 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{FARMHROKHMTBV2ZUDUMPSAPDC4}

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	2026-05-17T23:40:48.072776Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2822c3c5ca3b261aeb341d18f901e3171be851048358c00cd2bf69dbf13e2127

Aliases

arxiv: 1907.05525 · arxiv_version: 1907.05525v1 · doi: 10.48550/arxiv.1907.05525 · pith_short_12: FARMHROKHMTB · pith_short_16: FARMHROKHMTBV2ZU · pith_short_8: FARMHROK

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/FARMHROKHMTBV2ZUDUMPSAPDC4 \
  | 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: 2822c3c5ca3b261aeb341d18f901e3171be851048358c00cd2bf69dbf13e2127

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "34a27960e1c01509dbd17e16ef5179e65d2cf980bf84955b81950639da0f461d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DL",
    "submitted_at": "2019-07-11T23:56:36Z",
    "title_canon_sha256": "7455ac07c930dfbd4f3c687ca4d3cf72666e06e48b102e02019ca6acc1322344"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1907.05525",
    "kind": "arxiv",
    "version": 1
  }
}