Pith Number

pith:Q4I3A7T5

pith:1998:Q4I3A7T5226F2AUMVT52GTEQG5

not attested not anchored not stored refs pending

ASCA Observations of Blazars and Multiband Analysis

F. Makino, F. Takahara, G. Madejski, H. Kubo, M. Tashiro, S. Inoue, T. Takahashi

arxiv:astro-ph/9804031 v1 · 1998-04-03 · 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{Q4I3A7T5226F2AUMVT52GTEQG5}

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	2026-05-18T04:19:41.544375Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8711b07e7dd6bc5d028cacfba34c90376c6adef4c94fcdfd4fcb1faf98817af1

Aliases

arxiv: astro-ph/9804031 · arxiv_version: astro-ph/9804031v1 · doi: 10.48550/arxiv.astro-ph/9804031 · pith_short_12: Q4I3A7T5226F · pith_short_16: Q4I3A7T5226F2AUM · pith_short_8: Q4I3A7T5

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/Q4I3A7T5226F2AUMVT52GTEQG5 \
  | 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: 8711b07e7dd6bc5d028cacfba34c90376c6adef4c94fcdfd4fcb1faf98817af1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "713f81d1db59e4f1bb9eb082f8aa344b5370562986b8d0e3ce3ed69d76f372c7",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1998-04-03T11:51:58Z",
    "title_canon_sha256": "8dd0d3da3b703c135e193bea1bc0072828506bfe7c9699a6708bb4748a4a384e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9804031",
    "kind": "arxiv",
    "version": 1
  }
}