Pith Number

pith:6SOBRXZK

pith:2025:6SOBRXZKVDU7VB4YNG2WD3IP2W

not attested not anchored not stored refs pending

Classifying Cool Dwarfs: Comprehensive Spectral Typing of Field and Peculiar Dwarfs Using Machine Learning

Adam J. Burgasser, Christopher A. Theissen, Kelle L. Cruz, Lexu Zhao, S. Jean Feeser, Tianxing Zhou, William M. J. Best

arxiv:2508.09370 v1 · 2025-08-12 · astro-ph.SR · astro-ph.EP · astro-ph.GA · 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{6SOBRXZKVDU7VB4YNG2WD3IP2W}

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	2026-07-05T11:53:13.572328Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f49c18df2aa8e9fa879869b561ed0fd5914e386d9346190700cd522393208966

Aliases

arxiv: 2508.09370 · arxiv_version: 2508.09370v1 · doi: 10.48550/arxiv.2508.09370 · pith_short_12: 6SOBRXZKVDU7 · pith_short_16: 6SOBRXZKVDU7VB4Y · pith_short_8: 6SOBRXZK

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/6SOBRXZKVDU7VB4YNG2WD3IP2W \
  | 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: f49c18df2aa8e9fa879869b561ed0fd5914e386d9346190700cd522393208966

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7e11179d993cec23cb4e393de2c410b4050435f87854b278e36ab1bc4ea1feaa",
    "cross_cats_sorted": [
      "astro-ph.EP",
      "astro-ph.GA",
      "astro-ph.IM",
      "cs.LG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2025-08-12T21:58:55Z",
    "title_canon_sha256": "99be55b77ed06a92fe52e192a95450f14d0edc3c48a36612f0d470bbf3da5fa3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2508.09370",
    "kind": "arxiv",
    "version": 1
  }
}