Pith Number

pith:OXPEPTNO

pith:2001:OXPEPTNO3EFNEUSOHKEJ54355Z

not attested not anchored not stored refs pending

The First High Resolution X-ray Spectrum of Cyg X-1: Soft X-Ray Ionization and Absorption

C. R. Canizares, H. L. Marshall, J. C. Lee, J. M. Miller, N. S. Schulz, W. Cui, & W.H.G. Lewin

arxiv:astro-ph/0109236 v1 · 2001-09-15 · 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{OXPEPTNO3EFNEUSOHKEJ54355Z}

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	2026-07-04T16:24:07.336370Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

75de47cdaed90ad2524e3a889ef37dee6a1c3605802c355dad5ef3bd94cd69d5

Aliases

arxiv: astro-ph/0109236 · arxiv_version: astro-ph/0109236v1 · doi: 10.48550/arxiv.astro-ph/0109236 · pith_short_12: OXPEPTNO3EFN · pith_short_16: OXPEPTNO3EFNEUSO · pith_short_8: OXPEPTNO

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/OXPEPTNO3EFNEUSOHKEJ54355Z \
  | 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: 75de47cdaed90ad2524e3a889ef37dee6a1c3605802c355dad5ef3bd94cd69d5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b8815b1e16c53ffcc4444da81c261262355f52ec8d27e2ae29bc8762c94358c9",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2001-09-15T22:40:39Z",
    "title_canon_sha256": "4570edd81b58988f84ba6e079cf6df0bc424c67a1884c240a95c76bf0982acb5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0109236",
    "kind": "arxiv",
    "version": 1
  }
}