Pith Number

pith:UW5D4SRS

pith:2009:UW5D4SRS6IDZLQC475AV46FQVS

not attested not anchored not stored refs pending

The Dusty Nuclear Torus in NGC 4151: Constraints from Gemini Near-Infrared Integral Field Spectrograph Observations

Peter J. McGregor, Rogemar A. Riffel, Thaisa Storchi-Bergmann

arxiv:0903.2798 v2 · 2009-03-16 · astro-ph.CO

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UW5D4SRS6IDZLQC475AV46FQVS}

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	2026-05-18T04:29:15.933987Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a5ba3e4a32f20795c05cff415e78b0aca7cfcfc4a83420fedd814944d01f89ba

Aliases

arxiv: 0903.2798 · arxiv_version: 0903.2798v2 · doi: 10.48550/arxiv.0903.2798 · pith_short_12: UW5D4SRS6IDZ · pith_short_16: UW5D4SRS6IDZLQC4 · pith_short_8: UW5D4SRS

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/UW5D4SRS6IDZLQC475AV46FQVS \
  | 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: a5ba3e4a32f20795c05cff415e78b0aca7cfcfc4a83420fedd814944d01f89ba

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2a22194810ac2d4b682a811cf7149a2277567f2ee4673e03b07449ad6914ca8c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-03-16T19:15:10Z",
    "title_canon_sha256": "8aec0151a284ce975b58772b3edfe4e6618f9328e07a81fec824079c755ca6f3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0903.2798",
    "kind": "arxiv",
    "version": 2
  }
}