Pith Number

pith:VYPRWVNR

pith:2008:VYPRWVNRYFH3LAOQ7RLYZGJIOB

not attested not anchored not stored refs pending

The Behavior of the Aromatic Features in M101 HII Regions: Evidence for Dust Processing

Charles W. Engelbracht, George H. Rieke, J.-D. T. Smith, K. A. Misselt, Karl D. Gordon, Robert C. Kennicutt Jr

arxiv:0804.3223 v1 · 2008-04-21 · 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{VYPRWVNRYFH3LAOQ7RLYZGJIOB}

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	2026-07-04T15:34:06.007312Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ae1f1b55b1c14fb581d0fc578c9928707eda4d07bfa01c22d351b4bd2aa9660e

Aliases

arxiv: 0804.3223 · arxiv_version: 0804.3223v1 · doi: 10.48550/arxiv.0804.3223 · pith_short_12: VYPRWVNRYFH3 · pith_short_16: VYPRWVNRYFH3LAOQ · pith_short_8: VYPRWVNR

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/VYPRWVNRYFH3LAOQ7RLYZGJIOB \
  | 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: ae1f1b55b1c14fb581d0fc578c9928707eda4d07bfa01c22d351b4bd2aa9660e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a3e82395e708900227eee307e8e361cb20ef4c933ecff7ae3942b863e670f7a9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-04-21T00:02:10Z",
    "title_canon_sha256": "174c7b663de027d38568bec57b96cff8629a333b8fce9a63ec1c398733324790"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0804.3223",
    "kind": "arxiv",
    "version": 1
  }
}