Pith Number

pith:HJ57DDP2

pith:2005:HJ57DDP2F7SHY7Z25YUY66WHCE

not attested not anchored not stored refs pending

Blue Luminescence and the Presence of Small PAHs in the ISM

Adolf N. Witt, Karl D. Gordon, Uma P.Vijh

arxiv:astro-ph/0507326 v1 · 2005-07-13 · 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{HJ57DDP2F7SHY7Z25YUY66WHCE}

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	2026-07-04T17:15:45.819570Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3a7bf18dfa2fe47c7f3aee298f7ac7112e6a86adbf8fbea4f8d5adcd9b2038c9

Aliases

arxiv: astro-ph/0507326 · arxiv_version: astro-ph/0507326v1 · doi: 10.48550/arxiv.astro-ph/0507326 · pith_short_12: HJ57DDP2F7SH · pith_short_16: HJ57DDP2F7SHY7Z2 · pith_short_8: HJ57DDP2

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/HJ57DDP2F7SHY7Z25YUY66WHCE \
  | 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: 3a7bf18dfa2fe47c7f3aee298f7ac7112e6a86adbf8fbea4f8d5adcd9b2038c9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "77cdb573b5a88f7c870e9b0763bd026fe3090b61e6dedc243181947857da666c",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2005-07-13T16:18:11Z",
    "title_canon_sha256": "39fdbb628bcade8c6008252e46eecb72f5b4df7f2cdeaac4e78554ff06b69e75"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0507326",
    "kind": "arxiv",
    "version": 1
  }
}