Pith Number

pith:DXM3QZEH

pith:2016:DXM3QZEH6ABRADU2PU7HBMBPIE

not attested not anchored not stored refs pending

Ultraviolet Fe II Emission in Fainter Quasars: Luminosity Dependences, and the Influence of Environments

Gerard M. Williger, Ilona K. Soechting, Luis E. Campusano, Lutz Haberzettl, Matthew J. Graham, Roger G. Clowes, Sophia M. Mitchell, Srinivasan Raghunathan

arxiv:1604.08411 v1 · 2016-04-28 · 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{DXM3QZEH6ABRADU2PU7HBMBPIE}

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	2026-05-18T01:13:47.382326Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1dd9b86487f003100e9a7d3e70b02f413cb83369f253f3eacef1757dad2370f1

Aliases

arxiv: 1604.08411 · arxiv_version: 1604.08411v1 · doi: 10.48550/arxiv.1604.08411 · pith_short_12: DXM3QZEH6ABR · pith_short_16: DXM3QZEH6ABRADU2 · pith_short_8: DXM3QZEH

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/DXM3QZEH6ABRADU2PU7HBMBPIE \
  | 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: 1dd9b86487f003100e9a7d3e70b02f413cb83369f253f3eacef1757dad2370f1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "46f157d8cf1823af27c1868c575186e1ddd6e2e7c9eae0acec0dd8e75f4341ad",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2016-04-28T13:33:58Z",
    "title_canon_sha256": "9c59d216321ee1870843c368cd04fac5960fdc981768dce040a7a9b8ee0f6d76"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1604.08411",
    "kind": "arxiv",
    "version": 1
  }
}