Pith Number

pith:35EHQCCJ

pith:2018:35EHQCCJAUYIWG2Q3B4ZPQMWSJ

not attested not anchored not stored refs pending

Synthetic nebular emission from massive galaxies II: ultraviolet-line diagnostics of dominant ionizing sources

Anna Feltre, Ena Choi, Michaela Hirschmann, Rachel S. Somerville, St\'ephane Charlot, Thorsten Naab

arxiv:1811.07909 v1 · 2018-11-19 · 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{35EHQCCJAUYIWG2Q3B4ZPQMWSJ}

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	2026-05-17T23:44:58.491082Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

df4878084905308b1b50d87997c196925c86f166842d409bd71ba62290c95ab5

Aliases

arxiv: 1811.07909 · arxiv_version: 1811.07909v1 · doi: 10.48550/arxiv.1811.07909 · pith_short_12: 35EHQCCJAUYI · pith_short_16: 35EHQCCJAUYIWG2Q · pith_short_8: 35EHQCCJ

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/35EHQCCJAUYIWG2Q3B4ZPQMWSJ \
  | 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: df4878084905308b1b50d87997c196925c86f166842d409bd71ba62290c95ab5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c6c4226960ff9739668e3d0a25f9740250c1b7e6d56988157a908b17e464c467",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-11-19T19:00:02Z",
    "title_canon_sha256": "98eb869f5a654aae04d36332cac05153f68dd9470e86ea66d9a68df8ae1bfb21"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1811.07909",
    "kind": "arxiv",
    "version": 1
  }
}