Pith Number

pith:Q5QXVOTY

pith:2004:Q5QXVOTYTLM3PEPDPEDZE2LKL5

not attested not anchored not stored refs pending

A Composite Extreme Ultraviolet QSO Spectrum from the Far Ultraviolet Spectroscopic Explorer

2), (2) JHU, (3) Univ. of Wyoming, (4) Noao/Kpno, (5) HIA/NRC, (6) Univ. of Colorado), Gerard A. Kriss (1, Jennifer E. Scott (1), J. Michael Shull (6), John Hutchings (5), Michael Brotherton (3) Richard F. Green (4), Wei Zheng (2) ((1) STScI

arxiv:astro-ph/0407203 v1 · 2004-07-09 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{Q5QXVOTYTLM3PEPDPEDZE2LKL5}

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	2026-07-04T16:44:17.152066Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

87617aba789ad9b791e3790792696a5f5f500e0e191a174d5d2c29bc5c0c90ff

Aliases

arxiv: astro-ph/0407203 · arxiv_version: astro-ph/0407203v1 · doi: 10.48550/arxiv.astro-ph/0407203 · pith_short_12: Q5QXVOTYTLM3 · pith_short_16: Q5QXVOTYTLM3PEPD · pith_short_8: Q5QXVOTY

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/Q5QXVOTYTLM3PEPDPEDZE2LKL5 \
  | 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: 87617aba789ad9b791e3790792696a5f5f500e0e191a174d5d2c29bc5c0c90ff

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a7a5a6b8b09bfa60744bcf32c33d81ffebd7dd76f26c24a3bd4dea1cb1c5c14c",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2004-07-09T20:44:57Z",
    "title_canon_sha256": "421cd148b1efa6c70ecc083277ef49db078b2fb89450372c485aab64e2cf2f77"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0407203",
    "kind": "arxiv",
    "version": 1
  }
}