Pith Number

pith:QNJQYLVK

pith:2026:QNJQYLVKWH72JQUP2EAMBCDOXM

not attested not anchored not stored refs pending

An Agnostic Machine Learning Model of Photosynthetic Habitability

Andrew Ringham, Callum Gray, Cassandra Hall, Christopher D. P. Duffy, Edward Gillen, Klaus Schmidt-Rohr, Stefano Santabarbara, Thomas J. Haworth

arxiv:2606.24458 v1 · 2026-06-23 · astro-ph.EP · astro-ph.IM · cs.LG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QNJQYLVKWH72JQUP2EAMBCDOXM}

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	2026-06-24T01:15:30.974346Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

83530c2eaab1ffa4c28fd100c0886ebb25cf68c65cdc7efe1fba5d2a7d913f78

Aliases

arxiv: 2606.24458 · arxiv_version: 2606.24458v1 · doi: 10.48550/arxiv.2606.24458 · pith_short_12: QNJQYLVKWH72 · pith_short_16: QNJQYLVKWH72JQUP · pith_short_8: QNJQYLVK

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/QNJQYLVKWH72JQUP2EAMBCDOXM \
  | 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: 83530c2eaab1ffa4c28fd100c0886ebb25cf68c65cdc7efe1fba5d2a7d913f78

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "aa6ab470c8a0c90822174d7d05d9ca99bba96129b01f9ddb25a54522bea6df20",
    "cross_cats_sorted": [
      "astro-ph.IM",
      "cs.LG"
    ],
    "license": "http://creativecommons.org/licenses/by-sa/4.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2026-06-23T11:45:54Z",
    "title_canon_sha256": "5876fe2748934830472dcbd19bbb04ad9677c7d24bd65ea53c632cb9552dc595"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.24458",
    "kind": "arxiv",
    "version": 1
  }
}