Pith Number

pith:5QRIHZGV

pith:2009:5QRIHZGV27ALRPE2H4ZMZM6UNY

not attested not anchored not stored refs pending

The Initial Conditions of Clustered Star Formation. II. N2H+ Observations of the Ophiuchus B Core

J. Di Francesco, R. K. Friesen, S. Takakuwa, Y. Shimajiri

arxiv:0911.3922 v1 · 2009-11-19 · 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{5QRIHZGV27ALRPE2H4ZMZM6UNY}

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	2026-05-18T02:34:04.382290Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ec2283e4d5d7c0b8bc9a3f32ccb3d46e21a989efcdf0cad1a49b49438dab0a40

Aliases

arxiv: 0911.3922 · arxiv_version: 0911.3922v1 · doi: 10.48550/arxiv.0911.3922 · pith_short_12: 5QRIHZGV27AL · pith_short_16: 5QRIHZGV27ALRPE2 · pith_short_8: 5QRIHZGV

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/5QRIHZGV27ALRPE2H4ZMZM6UNY \
  | 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: ec2283e4d5d7c0b8bc9a3f32ccb3d46e21a989efcdf0cad1a49b49438dab0a40

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "797152f1b2225f963087694b734dd2399f9f23bd51b4ad925a9fc36883617b0a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2009-11-19T22:27:07Z",
    "title_canon_sha256": "5d5c1e92544ce3b815a3e8cbbd1427aa107977ca56eea41e6509c8a66a03aa5c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0911.3922",
    "kind": "arxiv",
    "version": 1
  }
}