Pith Number

pith:HO5TIZ7P

pith:1999:HO5TIZ7PPZBFQB5NFZGAJZUIIP

not attested not anchored not stored refs pending

DDO 187: Do dwarf galaxies have extended halos?

A. Aparicio, I. Karachentsev, N. Tikhonov

arxiv:astro-ph/9909493 v1 · 1999-09-29 · 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{HO5TIZ7PPZBFQB5NFZGAJZUIIP}

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	2026-07-04T16:11:39.527950Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3bbb3467ef7e425807ad2e4c04e68843c1d2353357f53325823d2522e89a2524

Aliases

arxiv: astro-ph/9909493 · arxiv_version: astro-ph/9909493v1 · doi: 10.48550/arxiv.astro-ph/9909493 · pith_short_12: HO5TIZ7PPZBF · pith_short_16: HO5TIZ7PPZBFQB5N · pith_short_8: HO5TIZ7P

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/HO5TIZ7PPZBFQB5NFZGAJZUIIP \
  | 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: 3bbb3467ef7e425807ad2e4c04e68843c1d2353357f53325823d2522e89a2524

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1ec699e1132efff78890baf42d2ef21dce7c3a1b39a49b03118c136861f97e7a",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1999-09-29T15:57:47Z",
    "title_canon_sha256": "b151458723878a9db7408bd2c42ba08f53b62b593a9986692332f47fef019e2b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9909493",
    "kind": "arxiv",
    "version": 1
  }
}