Pith Number

pith:V7CPQOMF

pith:1997:V7CPQOMFH45YYFFDDCMP5FSXEB

not attested not anchored not stored refs pending

X-ray absorption by ionized oxygen in ASCA spectra of the infrared quasar IRAS 13349+2438

C.S. Reynolds, M. Elvis, S. Mathur, W.N. Brandt

arxiv:astro-ph/9707216 v1 · 1997-07-18 · 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{V7CPQOMFH45YYFFDDCMP5FSXEB}

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	2026-05-18T01:40:17.010861Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

afc4f839853f3b8c14a31898fe9657206c9d31c5332794a9a812185447c5f1e3

Aliases

arxiv: astro-ph/9707216 · arxiv_version: astro-ph/9707216v1 · doi: 10.48550/arxiv.astro-ph/9707216 · pith_short_12: V7CPQOMFH45Y · pith_short_16: V7CPQOMFH45YYFFD · pith_short_8: V7CPQOMF

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/V7CPQOMFH45YYFFDDCMP5FSXEB \
  | 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: afc4f839853f3b8c14a31898fe9657206c9d31c5332794a9a812185447c5f1e3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a91a72e54c07f00d72d185ce95b5c72579308cea4d6213a890dd512c7e439f0b",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1997-07-18T21:21:17Z",
    "title_canon_sha256": "0bb051af58aeb7062453050ab56037fbe5f2c67b0df7751734d2ad190a8c89c7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9707216",
    "kind": "arxiv",
    "version": 1
  }
}