Pith Number

pith:PPFVZY2Z

pith:2019:PPFVZY2ZAXZ77HPQUWKZCWJIFA

not attested not anchored not stored refs pending

Lab Hackathons to Overcome Laboratory Equipment Shortages in Africa: Opportunities and Challenges

Helena Webb, Jason R.C. Nurse, Louise Bezuidenhout, Marina Jirotka

arxiv:1904.01687 v1 · 2019-04-02 · cs.CY · cs.HC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PPFVZY2ZAXZ77HPQUWKZCWJIFA}

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	2026-05-17T23:49:30.189033Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7bcb5ce35905f3ff9df0a595915928281f999ff70e833c627d2d09cc1455d1c5

Aliases

arxiv: 1904.01687 · arxiv_version: 1904.01687v1 · doi: 10.48550/arxiv.1904.01687 · pith_short_12: PPFVZY2ZAXZ7 · pith_short_16: PPFVZY2ZAXZ77HPQ · pith_short_8: PPFVZY2Z

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/PPFVZY2ZAXZ77HPQUWKZCWJIFA \
  | 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: 7bcb5ce35905f3ff9df0a595915928281f999ff70e833c627d2d09cc1455d1c5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c2faef60e3cb55748a2567c7f1fd9173b5967a384c1b656c6084aa41372b654c",
    "cross_cats_sorted": [
      "cs.HC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CY",
    "submitted_at": "2019-04-02T22:15:57Z",
    "title_canon_sha256": "18ab8d471ec761bf9cf83fc3962e34ffb82c5ef7df9296601163422df5d15ffa"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.01687",
    "kind": "arxiv",
    "version": 1
  }
}