Pith Number

pith:GFP4BOEI

pith:2012:GFP4BOEIKCPWIXYYE5257TFNCM

not attested not anchored not stored refs pending

Unique Astrophysics in the Lyman Ultraviolet

Alessandra Aloisi (STScI), Alex Fullerton (STScI), Andrew Fox (STScI), Bart Wakker (Wisconsin), Bill Blair (JHU), Charles Danforth (Colorado), Christopher Howk (Notre Dame), Colorado), Cristina Oliveira (STScI), Cynthia Froning (Colorado), Edward Jenkins (Princeton), George Sonneborn (GSFC), Gerard Kriss (STScI), James Green (Colorado), Jason Tumlinson (STScI), Jeff Kruk (GSFC), John Stocke (Colorado), John Vallerga (Berkeley), Ken Sembach (STScI), Kevin France (Colorado), Matthew Beasley (Colorado), Michael Shull (Colorado), Nicolas Lehner (Notre Dame), Paul Scowen (ASU), Stephan McCandliss (JHU), Steven Penton (STScI, Todd Tripp (UMass), Xavier Prochaska (UCO/Lick)

arxiv:1209.3272 v1 · 2012-09-14 · astro-ph.IM · astro-ph.CO · 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{GFP4BOEIKCPWIXYYE5257TFNCM}

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	2026-05-18T03:45:32.364895Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

315fc0b888509f645f182775dfccad1334a3cd470c67526f73958f37d170e824

Aliases

arxiv: 1209.3272 · arxiv_version: 1209.3272v1 · doi: 10.48550/arxiv.1209.3272 · pith_short_12: GFP4BOEIKCPW · pith_short_16: GFP4BOEIKCPWIXYY · pith_short_8: GFP4BOEI

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/GFP4BOEIKCPWIXYYE5257TFNCM \
  | 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: 315fc0b888509f645f182775dfccad1334a3cd470c67526f73958f37d170e824

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f214624773f235984ad400a0a19042e554971baa9e57366e9200f9befa4d268a",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2012-09-14T18:08:58Z",
    "title_canon_sha256": "83ceb06c2d0a531f6167603552a5e83afa5fca3dd887dc5dc28d45ef3f2603ba"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1209.3272",
    "kind": "arxiv",
    "version": 1
  }
}