Pith Number

pith:P6OMH3AM

pith:2018:P6OMH3AMLK2OD7Q3VHDXR7CHH3

not attested not anchored not stored refs pending

Observations and perspectives on the variation of biodiversity

Dirson Jian Li

arxiv:1807.01828 v1 · 2018-07-05 · q-bio.PE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{P6OMH3AMLK2OD7Q3VHDXR7CHH3}

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	2026-05-18T00:11:28.554198Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7f9cc3ec0c5ab4e1fe1ba9c778fc473ed4c0e2300f7522249585f39f7d0a33d1

Aliases

arxiv: 1807.01828 · arxiv_version: 1807.01828v1 · doi: 10.48550/arxiv.1807.01828 · pith_short_12: P6OMH3AMLK2O · pith_short_16: P6OMH3AMLK2OD7Q3 · pith_short_8: P6OMH3AM

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/P6OMH3AMLK2OD7Q3VHDXR7CHH3 \
  | 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: 7f9cc3ec0c5ab4e1fe1ba9c778fc473ed4c0e2300f7522249585f39f7d0a33d1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "77ae115c223e467dd93badbaa176ea4209226ecc42f4ff7438ab64ee88d25199",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-nc-sa/4.0/",
    "primary_cat": "q-bio.PE",
    "submitted_at": "2018-07-05T02:04:56Z",
    "title_canon_sha256": "0c215279c1e7d3d65ab377c5eb8d0960e38415d8a33bb6e22aec71f871d2bfd4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.01828",
    "kind": "arxiv",
    "version": 1
  }
}