Pith Number

pith:XPPM5AUV

pith:2016:XPPM5AUVCWCBMTBWXU7JSVZQ72

not attested not anchored not stored refs pending

Chemical abundances in high-redshift galaxies: A powerful new emission line diagnostic

David C. Nicholls, Lisa J. Kewley, Michael A. Dopita, Ralph S. Sutherland

arxiv:1601.01337 v1 · 2016-01-06 · astro-ph.GA · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XPPM5AUVCWCBMTBWXU7JSVZQ72}

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	2026-05-18T01:21:25.454210Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bbdece82951584164c36bd3e995730feab538b14d57bb0a9657b1ac643d41a49

Aliases

arxiv: 1601.01337 · arxiv_version: 1601.01337v1 · doi: 10.48550/arxiv.1601.01337 · pith_short_12: XPPM5AUVCWCB · pith_short_16: XPPM5AUVCWCBMTBW · pith_short_8: XPPM5AUV

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/XPPM5AUVCWCBMTBWXU7JSVZQ72 \
  | 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: bbdece82951584164c36bd3e995730feab538b14d57bb0a9657b1ac643d41a49

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8509d58def3afc00ca01979486932f289e5c3978ca7d480b0ca81fcd554d3964",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2016-01-06T21:59:19Z",
    "title_canon_sha256": "62a1015584ffea203df6a9f1ca11f914240497c8574a7dd72981fb771ae73864"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1601.01337",
    "kind": "arxiv",
    "version": 1
  }
}