Pith Number

pith:3JQ2BYLJ

pith:1997:3JQ2BYLJQQOW65MADE6POUREPN

not attested not anchored not stored refs pending

X-ray and gamma-ray spectra of Cyg X-1 in the soft state

Andrzej A. Zdziarski, Keith Jahoda, Ken Ebisawa, Marek Gierlinski, Tadayasu Dotani, W. Neil Johnson

arxiv:astro-ph/9707213 v2 · 1997-07-17 · 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{3JQ2BYLJQQOW65MADE6POUREPN}

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	2026-07-04T16:03:08.027296Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

da61a0e169841d6f7580193cf752247b7359e7f959408244ec40ce5a4a407907

Aliases

arxiv: astro-ph/9707213 · arxiv_version: astro-ph/9707213v2 · doi: 10.48550/arxiv.astro-ph/9707213 · pith_short_12: 3JQ2BYLJQQOW · pith_short_16: 3JQ2BYLJQQOW65MA · pith_short_8: 3JQ2BYLJ

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/3JQ2BYLJQQOW65MADE6POUREPN \
  | 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: da61a0e169841d6f7580193cf752247b7359e7f959408244ec40ce5a4a407907

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f48fb181239cb43878606180d46f001283a2c9f4810a88bbec517d925fed8c6d",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1997-07-17T22:40:02Z",
    "title_canon_sha256": "3fc2dff54b53fb44af3d37dc91e42ff4f8962e105266c1da03fc5cf348b64be3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9707213",
    "kind": "arxiv",
    "version": 2
  }
}