Pith Number

pith:Y6U7DMMZ

pith:2011:Y6U7DMMZAWKY7WQJFBAIEJLNAD

not attested not anchored not stored refs pending

Study of Molecular Clouds associated with HII Regions

Michel Fich, Mohaddesseh Azimlu

arxiv:1102.0287 v1 · 2011-02-01 · astro-ph.SR · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{Y6U7DMMZAWKY7WQJFBAIEJLNAD}

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	2026-05-18T02:03:17.879782Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c7a9f1b19905958fda09284082256d00d71bb65bdc9751bb2fcb0176d9bb99dd

Aliases

arxiv: 1102.0287 · arxiv_version: 1102.0287v1 · doi: 10.48550/arxiv.1102.0287 · pith_short_12: Y6U7DMMZAWKY · pith_short_16: Y6U7DMMZAWKY7WQJ · pith_short_8: Y6U7DMMZ

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/Y6U7DMMZAWKY7WQJFBAIEJLNAD \
  | 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: c7a9f1b19905958fda09284082256d00d71bb65bdc9751bb2fcb0176d9bb99dd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ad5f4c7fab470a880bdc1043cfc252395bd353ec8a948a6e53d6d9a5a42f1745",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2011-02-01T21:00:09Z",
    "title_canon_sha256": "a30daf2f459d4799da3b37cc7f42234f08a5f2ff706b1b1fb3a543a99c332a7f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1102.0287",
    "kind": "arxiv",
    "version": 1
  }
}