Pith Number

pith:VVSBCVTO

pith:2009:VVSBCVTOVNZ5LG5JXWCBXNYU3U

not attested not anchored not stored refs pending

The Relation Between Optical Extinction and Hydrogen Column Density in the Galaxy

Feryal Ozel, Tolga Guver

arxiv:0903.2057 v2 · 2009-03-11 · astro-ph.GA · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VVSBCVTOVNZ5LG5JXWCBXNYU3U}

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	2026-05-18T02:14:35.826861Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ad6411566eab73d59ba9bd841bb714dd15a119ad71b787d2ea5369c14b860391

Aliases

arxiv: 0903.2057 · arxiv_version: 0903.2057v2 · doi: 10.48550/arxiv.0903.2057 · pith_short_12: VVSBCVTOVNZ5 · pith_short_16: VVSBCVTOVNZ5LG5J · pith_short_8: VVSBCVTO

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/VVSBCVTOVNZ5LG5JXWCBXNYU3U \
  | 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: ad6411566eab73d59ba9bd841bb714dd15a119ad71b787d2ea5369c14b860391

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "14affb7d72b31c0b32a87d85f3ac2505bd67b25d2005e88c6ada820d740783aa",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2009-03-11T21:10:29Z",
    "title_canon_sha256": "85a9f93d58d531794f4482a4a7859fa31327fa30cd6d787e84dda6ee5f48ae3f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0903.2057",
    "kind": "arxiv",
    "version": 2
  }
}