Pith Number

pith:G74GRPQY

pith:1999:G74GRPQY27SQRWWA7IKNKADNFG

not attested not anchored not stored refs pending

Radial Transport of Molecular Gas to the Nuclei of Spiral Galaxies

K. Sakamoto, N. Z. Scoville, S. Ishizuki, S. K. Okumura

arxiv:astro-ph/9902005 v1 · 1999-01-31 · 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{G74GRPQY27SQRWWA7IKNKADNFG}

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	2026-07-04T14:16:31.938799Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

37f868be18d7e508dac0fa14d5006d29aa76be5c687f28a13eb29a1b11193c0c

Aliases

arxiv: astro-ph/9902005 · arxiv_version: astro-ph/9902005v1 · doi: 10.48550/arxiv.astro-ph/9902005 · pith_short_12: G74GRPQY27SQ · pith_short_16: G74GRPQY27SQRWWA · pith_short_8: G74GRPQY

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/G74GRPQY27SQRWWA7IKNKADNFG \
  | 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: 37f868be18d7e508dac0fa14d5006d29aa76be5c687f28a13eb29a1b11193c0c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "06835fa0e0370524694fdb826251adef85ebadf44bcbb18502ac448e141ea3b7",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1999-01-31T19:01:39Z",
    "title_canon_sha256": "471027ac74c8809f32e40a2a1b0f490f78c62ae2af55427c9d6fa814cd942152"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9902005",
    "kind": "arxiv",
    "version": 1
  }
}