Pith Number

pith:XYFFMEC6

pith:2012:XYFFMEC6BJ6SJIJHUFRN2JLUB2

not attested not anchored not stored refs pending

Galaxies with Background QSOs, I: A Search for Strong Galactic H-alpha Lines

Daniel Vanden Berk, David Bowen, Donald G. York, Gordon Richards, Jean Quashnock, Lara Ghering, Lorrie A. Straka, Mark SubbaRao, Michael Bishof, Patrick B. Hall, Pushpa Khare, Sean Johnson, Seth Kuttruff, Timothy Heckman, Varsha P. Kulkarni

arxiv:1204.5786 v1 · 2012-04-25 · 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{XYFFMEC6BJ6SJIJHUFRN2JLUB2}

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	2026-05-18T01:57:44.105018Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

be0a56105e0a7d24a127a162dd25740eae132b3bcc5a9a5d47e7f43fb3d1ffb2

Aliases

arxiv: 1204.5786 · arxiv_version: 1204.5786v1 · doi: 10.48550/arxiv.1204.5786 · pith_short_12: XYFFMEC6BJ6S · pith_short_16: XYFFMEC6BJ6SJIJH · pith_short_8: XYFFMEC6

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/XYFFMEC6BJ6SJIJHUFRN2JLUB2 \
  | 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: be0a56105e0a7d24a127a162dd25740eae132b3bcc5a9a5d47e7f43fb3d1ffb2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d443c4435521936fbbbdf812b8f87e4210d437cae431f120a8560f5dcf9c596e",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2012-04-25T22:37:54Z",
    "title_canon_sha256": "75fe463b490890b124a8590aee03bf524d0d2227e73c3a7ddd3c190042e0ac70"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1204.5786",
    "kind": "arxiv",
    "version": 1
  }
}