Pith Number

pith:PFRLRELJ

pith:2020:PFRLRELJ5P2WTUANQDY5PGD2DM

not attested not anchored not stored refs pending

On the origin of nitrogen at low metallicity

Alexander Heger, Arpita Roy, Lisa J. Kewley, Mark R. Krumholz, Michael A. Dopita, Ralph S. Sutherland

arxiv:2005.03038 v2 · 2020-05-06 · astro-ph.GA · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PFRLRELJ5P2WTUANQDY5PGD2DM}

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	2026-07-05T02:15:24.366414Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7962b89169ebf569d00d80f1d7987a1b20b86d7a893f2a57af6fad65f513ea00

Aliases

arxiv: 2005.03038 · arxiv_version: 2005.03038v2 · doi: 10.48550/arxiv.2005.03038 · pith_short_12: PFRLRELJ5P2W · pith_short_16: PFRLRELJ5P2WTUAN · pith_short_8: PFRLRELJ

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/PFRLRELJ5P2WTUANQDY5PGD2DM \
  | 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: 7962b89169ebf569d00d80f1d7987a1b20b86d7a893f2a57af6fad65f513ea00

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ed4d2ab57f633a52ee1e7fe69078eb4f1d5d3be0d3f882208fadc79a4469ae1d",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2020-05-06T18:00:04Z",
    "title_canon_sha256": "dcf98a28362d26e7096d86d5f946cbdf41e7a5c54d92ea5927b5253bd9d3a0bd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2005.03038",
    "kind": "arxiv",
    "version": 2
  }
}