Pith Number

pith:XM7W2APZ

pith:1998:XM7W2APZMNTWR3BPIDF7YJMDVF

not attested not anchored not stored refs pending

Dust Extinction and Molecular Cloud Structure: L977

C. Lada, E. Lada, J. Alves, R. Phelps, S. Kenyon

arxiv:astro-ph/9805141 v1 · 1998-05-12 · 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{XM7W2APZMNTWR3BPIDF7YJMDVF}

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	2026-07-04T16:06:22.885680Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bb3f6d01f9636768ec2f40cbfc2583a9516969789963b4194a39cbff691e1d40

Aliases

arxiv: astro-ph/9805141 · arxiv_version: astro-ph/9805141v1 · doi: 10.48550/arxiv.astro-ph/9805141 · pith_short_12: XM7W2APZMNTW · pith_short_16: XM7W2APZMNTWR3BP · pith_short_8: XM7W2APZ

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/XM7W2APZMNTWR3BPIDF7YJMDVF \
  | 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: bb3f6d01f9636768ec2f40cbfc2583a9516969789963b4194a39cbff691e1d40

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "37dbc2b6c8d0cf828447f9e032f37e43b9f7dfe870bc863aba02d2dfb513a939",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1998-05-12T01:35:31Z",
    "title_canon_sha256": "5a9aead60374b76cf4fa12d57af1bf1b1421868f2e71b520332cb48f15be34dd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9805141",
    "kind": "arxiv",
    "version": 1
  }
}