Pith Number

pith:QAIFW7NG

pith:2007:QAIFW7NG4LF7V2RNZWP623EYLT

not attested not anchored not stored refs pending

HNC, HCN and CN in Seyfert galaxies

2), (2) Onsala Rymdobservatorium), H. Gerebro (2) ((1) Kapteyn Astronomical Institute, J.P. P\'erez-Beaupuits (1, S. Aalto (2)

arxiv:0710.4400 v1 · 2007-10-24 · 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{QAIFW7NG4LF7V2RNZWP623EYLT}

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	2026-05-18T04:30:58.519786Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

80105b7da6e2cbfaea2dcd9fed6c985cc20ac202ca0e93e609b0b1f6ef56a9bc

Aliases

arxiv: 0710.4400 · arxiv_version: 0710.4400v1 · doi: 10.48550/arxiv.0710.4400 · pith_short_12: QAIFW7NG4LF7 · pith_short_16: QAIFW7NG4LF7V2RN · pith_short_8: QAIFW7NG

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/QAIFW7NG4LF7V2RNZWP623EYLT \
  | 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: 80105b7da6e2cbfaea2dcd9fed6c985cc20ac202ca0e93e609b0b1f6ef56a9bc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3315a8422443ba2a5576fe4aa7044d3d27276fe28b9b6290224f41bfa27c1d32",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2007-10-24T08:06:36Z",
    "title_canon_sha256": "d90fb2cc581289dc71b6790c8bb503ef2a16e969e4c6956f9cf3b15b7621110d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0710.4400",
    "kind": "arxiv",
    "version": 1
  }
}