Pith Number

pith:FUJM4JPA

pith:2016:FUJM4JPALFU6J5HIFAXCJWSBS7

not attested not anchored not stored refs pending

H-alpha as a Luminosity Class Diagnostic for K- and M-type Stars

Emily M. Levesque, Jeff Jennings

arxiv:1601.07575 v2 · 2016-01-27 · astro-ph.SR · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FUJM4JPALFU6J5HIFAXCJWSBS7}

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	2026-05-18T01:15:42.743610Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2d12ce25e05969e4f4e8282e24da4197d56709bc5f23f8e4e60626fea0ff6f2b

Aliases

arxiv: 1601.07575 · arxiv_version: 1601.07575v2 · doi: 10.48550/arxiv.1601.07575 · pith_short_12: FUJM4JPALFU6 · pith_short_16: FUJM4JPALFU6J5HI · pith_short_8: FUJM4JPA

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/FUJM4JPALFU6J5HIFAXCJWSBS7 \
  | 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: 2d12ce25e05969e4f4e8282e24da4197d56709bc5f23f8e4e60626fea0ff6f2b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "047cf3e8c0a640bdd909b2a1a2533509558f3498fc4fd30c8faca4d30ead8192",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2016-01-27T21:31:37Z",
    "title_canon_sha256": "07187fad4d58bda637ef3ebe322f0462a259c2aa23d33b96aba6c841cf8b5d43"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1601.07575",
    "kind": "arxiv",
    "version": 2
  }
}