Pith Number

pith:BHDAQSJG

pith:1999:BHDAQSJGAKCHTJJNOEF5GHA2WG

not attested not anchored not stored refs pending

First DENIS I-band extragalactic catalog

D. Tiph\`ene, G. Paturel, H. Di-Nella Courtois, I. Vauglin, J. Borsenberger, N. Epchtein, P. Fouqu\'e, P. Lanoix, S. Kimeswenger

arxiv:astro-ph/9901412 v1 · 1999-01-29 · astro-ph · astro-ph.CO

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{BHDAQSJGAKCHTJJNOEF5GHA2WG}

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	2026-05-18T02:28:41.286697Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

09c6084926028479a52d710bd31c1ab1aefb1bd13d653e69e8f57bfe43b8b0d1

Aliases

arxiv: astro-ph/9901412 · arxiv_version: astro-ph/9901412v1 · doi: 10.48550/arxiv.astro-ph/9901412 · pith_short_12: BHDAQSJGAKCH · pith_short_16: BHDAQSJGAKCHTJJN · pith_short_8: BHDAQSJG

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/BHDAQSJGAKCHTJJNOEF5GHA2WG \
  | 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: 09c6084926028479a52d710bd31c1ab1aefb1bd13d653e69e8f57bfe43b8b0d1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "aa10dfa84efdae023db813910bea5a3beca9478d59e740daff6ae5a223c31c38",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1999-01-29T11:59:37Z",
    "title_canon_sha256": "275129af83008c6ca11def5878a8defdd613b7b8d54bc40a6fab8d507d5e0c8a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9901412",
    "kind": "arxiv",
    "version": 1
  }
}