Pith Number

pith:WQRJ7ZCE

pith:2012:WQRJ7ZCECJHQ6DVBUD3EYHZIJ5

not attested not anchored not stored refs pending

Protostellar disk formation and transport of angular momentum during magnetized core collapse

Andrea Ciardi, Marc Joos, Patrick Hennebelle

arxiv:1203.1193 v3 · 2012-03-06 · 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{WQRJ7ZCECJHQ6DVBUD3EYHZIJ5}

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	2026-05-18T01:58:14.288503Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b4229fe444124f0f0ea1a0f64c1f284f7dde8acd5a392e441bfb4937b449892c

Aliases

arxiv: 1203.1193 · arxiv_version: 1203.1193v3 · doi: 10.48550/arxiv.1203.1193 · pith_short_12: WQRJ7ZCECJHQ · pith_short_16: WQRJ7ZCECJHQ6DVB · pith_short_8: WQRJ7ZCE

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/WQRJ7ZCECJHQ6DVBUD3EYHZIJ5 \
  | 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: b4229fe444124f0f0ea1a0f64c1f284f7dde8acd5a392e441bfb4937b449892c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c630959d49a04667b42e8e7d6f1eacb0918d5f6be2604706f29cf2a7a66c7e0e",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2012-03-06T13:22:00Z",
    "title_canon_sha256": "daed000f373218737ccca86295d8aed04591c3e8d5dcfd8eda7a0659429ba74b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1203.1193",
    "kind": "arxiv",
    "version": 3
  }
}