Pith Number

pith:VPJBQ3CT

pith:2017:VPJBQ3CT7AVEWYPPHMYWMAJXUS

not attested not anchored not stored refs pending

Learning Seasonal Phytoplankton Communities with Topic Models

Arnold Kalmbach, Gregory Dudek, Heidi M. Sosik, Yogesh Girdhar

arxiv:1711.09013 v2 · 2017-11-19 · stat.AP · cs.CE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VPJBQ3CT7AVEWYPPHMYWMAJXUS}

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	2026-05-18T00:28:10.137020Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

abd2186c53f82a4b61ef3b31660137a4a6ea528b29ece222aaa0d8257f0d305c

Aliases

arxiv: 1711.09013 · arxiv_version: 1711.09013v2 · doi: 10.48550/arxiv.1711.09013 · pith_short_12: VPJBQ3CT7AVE · pith_short_16: VPJBQ3CT7AVEWYPP · pith_short_8: VPJBQ3CT

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/VPJBQ3CT7AVEWYPPHMYWMAJXUS \
  | 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: abd2186c53f82a4b61ef3b31660137a4a6ea528b29ece222aaa0d8257f0d305c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "049e3eb4ff96cfa5a7e66c28affc3ede09ab8ca2a9750a5e104ccf2742f380e1",
    "cross_cats_sorted": [
      "cs.CE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.AP",
    "submitted_at": "2017-11-19T21:20:26Z",
    "title_canon_sha256": "6de0b8dde1f18270b931cb9316ef9f295d348d1c14a6f4cdbb236f929d168261"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1711.09013",
    "kind": "arxiv",
    "version": 2
  }
}