Pith Number

pith:4RRF74BO

pith:1999:4RRF74BOBJDSXLYG6Q5B7VEQLQ

not attested not anchored not stored refs pending

Log N - Log S Relations and Spectral Properties of Sources from the ASCA Large Sky Survey --- their Implications for the Origin of the Cosmic X-ray Background (CXB)

H. Inoue, K. Makishima, K. Ohta, M. Akiyama, M. Sakano, T. Takahashi, T. Tsuru, T. Yamada, Y. Ishisaki, Y. Ogasaka, Y. Ueda

arxiv:astro-ph/9901101 v2 · 1999-01-09 · 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{4RRF74BOBJDSXLYG6Q5B7VEQLQ}

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	2026-07-04T15:20:40.310768Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e4625ff02e0a472baf06f43a1fd4905c04df9bf2ef40f6a9f5a28780bd5c3dd8

Aliases

arxiv: astro-ph/9901101 · arxiv_version: astro-ph/9901101v2 · doi: 10.48550/arxiv.astro-ph/9901101 · pith_short_12: 4RRF74BOBJDS · pith_short_16: 4RRF74BOBJDSXLYG · pith_short_8: 4RRF74BO

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/4RRF74BOBJDSXLYG6Q5B7VEQLQ \
  | 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: e4625ff02e0a472baf06f43a1fd4905c04df9bf2ef40f6a9f5a28780bd5c3dd8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ac4d2556d117603ebfc45c8f64b2c90dcd84d946f5629eb0b0db75b6d43a71d8",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1999-01-09T13:44:28Z",
    "title_canon_sha256": "6c9242bf2500effcdc1c742aedc5a1a37e6a8706284b528340a206b5091a70e8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9901101",
    "kind": "arxiv",
    "version": 2
  }
}