Pith Number

pith:SDFGRMQW

pith:2021:SDFGRMQWO5HVZLF3P2WUBHPQGH

not attested not anchored not stored refs pending

Protoplanetary disk formation from the collapse of a prestellar core

Patrick Hennebelle, S\'ebastien Charnoz, Yueh-Ning Lee

arxiv:2102.07963 v2 · 2021-02-16 · astro-ph.EP · astro-ph.GA · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SDFGRMQWO5HVZLF3P2WUBHPQGH}

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	2026-07-05T02:33:50.967600Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

90ca68b216774f5cacbb7ead409df031c244bea87a2564d314125900d2da1cad

Aliases

arxiv: 2102.07963 · arxiv_version: 2102.07963v2 · doi: 10.48550/arxiv.2102.07963 · pith_short_12: SDFGRMQWO5HV · pith_short_16: SDFGRMQWO5HVZLF3 · pith_short_8: SDFGRMQW

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/SDFGRMQWO5HVZLF3P2WUBHPQGH \
  | 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: 90ca68b216774f5cacbb7ead409df031c244bea87a2564d314125900d2da1cad

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cec497c98b364484c0778ab66bf8d7eb6537243bc718ea274ae316eece2039f0",
    "cross_cats_sorted": [
      "astro-ph.GA",
      "astro-ph.SR"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2021-02-16T05:22:33Z",
    "title_canon_sha256": "9283c412d18a47cc6f244e6bbf01f5c44b0671d425d4cda8b07493e670ab3db0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2102.07963",
    "kind": "arxiv",
    "version": 2
  }
}