Pith Number

pith:U6ULKT7P

pith:2001:U6ULKT7PAYWKTW63XXRBKLGIO4

not attested not anchored not stored refs pending

Gas Rich Galaxies and the HI Mass Function

A. Kambas, J.I. Davies, R.M. Smith, S. A. Salehi-Reyhani, S. M. Linder, S. Sabatini, W.J.G. de Blok

arxiv:astro-ph/0109087 v1 · 2001-09-06 · 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{U6ULKT7PAYWKTW63XXRBKLGIO4}

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	2026-05-18T01:07:45.538697Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a7a8b54fef062ca9dbdbbde2152cc8770a9c5d6ee8727d5ee4869ccd06b31f90

Aliases

arxiv: astro-ph/0109087 · arxiv_version: astro-ph/0109087v1 · doi: 10.48550/arxiv.astro-ph/0109087 · pith_short_12: U6ULKT7PAYWK · pith_short_16: U6ULKT7PAYWKTW63 · pith_short_8: U6ULKT7P

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/U6ULKT7PAYWKTW63XXRBKLGIO4 \
  | 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: a7a8b54fef062ca9dbdbbde2152cc8770a9c5d6ee8727d5ee4869ccd06b31f90

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a9e034493ca6389c8bd8dd5e089ad885bc51c0afefe43636058594eeb686c638",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2001-09-06T11:51:03Z",
    "title_canon_sha256": "7676e1317b069b8811c06bf0c9e3ae37ed375c99017e62e314675abe8552a931"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0109087",
    "kind": "arxiv",
    "version": 1
  }
}