Pith Number

pith:NIAYXBBX

pith:2001:NIAYXBBXMQLDQDYJUTICWCM2XX

not attested not anchored not stored refs pending

ASCA Observations of the Central Regions of M31

Hiromitsu Takahashi, Kazuo Makishima (University of Tokyo), Motohide Kokubun, Yuu Okada

arxiv:astro-ph/0108490 v1 · 2001-08-30 · 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{NIAYXBBXMQLDQDYJUTICWCM2XX}

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	2026-05-18T01:40:44.205927Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6a018b84376416380f09a4d02b099abdde3822069d7ff74532f5ea31c0048381

Aliases

arxiv: astro-ph/0108490 · arxiv_version: astro-ph/0108490v1 · doi: 10.48550/arxiv.astro-ph/0108490 · pith_short_12: NIAYXBBXMQLD · pith_short_16: NIAYXBBXMQLDQDYJ · pith_short_8: NIAYXBBX

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/NIAYXBBXMQLDQDYJUTICWCM2XX \
  | 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: 6a018b84376416380f09a4d02b099abdde3822069d7ff74532f5ea31c0048381

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b021b7ebd2be5f81299f2b6686f43a7d9b5cb667bb031e9902c4d6ab004cd5c2",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2001-08-30T15:34:16Z",
    "title_canon_sha256": "3d8b6a30cfe1fd045c0d13a989ec46713271adef9dbac8a0cdb18cedba6f9499"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0108490",
    "kind": "arxiv",
    "version": 1
  }
}