Pith Number

pith:KNF3KZ5I

pith:1999:KNF3KZ5IKIWO3KXH3C4SMMBKEV

not attested not anchored not stored refs pending

H2 in Galaxies

F. Combes (Observatoire de Paris)

arxiv:astro-ph/9910296 v1 · 1999-10-15 · 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{KNF3KZ5IKIWO3KXH3C4SMMBKEV}

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	2026-07-04T14:17:13.592891Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

534bb567a8522cedaae7d8b926302a2559c7314e80a3a8203a016b2c0fa96be5

Aliases

arxiv: astro-ph/9910296 · arxiv_version: astro-ph/9910296v1 · doi: 10.48550/arxiv.astro-ph/9910296 · pith_short_12: KNF3KZ5IKIWO · pith_short_16: KNF3KZ5IKIWO3KXH · pith_short_8: KNF3KZ5I

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/KNF3KZ5IKIWO3KXH3C4SMMBKEV \
  | 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: 534bb567a8522cedaae7d8b926302a2559c7314e80a3a8203a016b2c0fa96be5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "10d3a138749e127d07153ecabdc2a5e2e5b3148ef793bbf3d821b2ac2597d5b3",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1999-10-15T16:35:41Z",
    "title_canon_sha256": "fc768dd3538558a265217ef502947d163e7a9a9c2fe6a20d9b9062c71a4fef58"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9910296",
    "kind": "arxiv",
    "version": 1
  }
}