Pith Number

pith:G77NYORP

pith:2021:G77NYORPKGGSDWS4ENRGRTSY4A

not attested not anchored not stored refs pending

H-alpha emission in local galaxies: star formation, time variability and the diffuse ionized gas

Aaron Smith, Federico Marinacci, Hui Li, Lars Hernquist, Laura Sales, Mark Vogelsberger, Paul Torrey, Rahul Kannan, Sandro Tacchella

arxiv:2112.00027 v2 · 2021-11-30 · 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{G77NYORPKGGSDWS4ENRGRTSY4A}

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	2026-07-05T04:12:37.379448Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

37fedc3a2f518d21da5c236268ce58e01827d17b9365e9c853ae5818a84ba48c

Aliases

arxiv: 2112.00027 · arxiv_version: 2112.00027v2 · doi: 10.48550/arxiv.2112.00027 · pith_short_12: G77NYORPKGGS · pith_short_16: G77NYORPKGGSDWS4 · pith_short_8: G77NYORP

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/G77NYORPKGGSDWS4ENRGRTSY4A \
  | 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: 37fedc3a2f518d21da5c236268ce58e01827d17b9365e9c853ae5818a84ba48c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9d504b1d9c4a545f67535d7eaf1f434f6127a0f8b7b9dfb8adb9063915147795",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2021-11-30T19:00:03Z",
    "title_canon_sha256": "9d22a9c0c45639f9df4beaaf6509929e444b54a840d67fee6475bae1818b198b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2112.00027",
    "kind": "arxiv",
    "version": 2
  }
}