Pith Number

pith:QQ2G5ZQD

pith:2013:QQ2G5ZQDIWMDS74NUCQ4KLO4JE

not attested not anchored not stored refs pending

Fragmenting protostellar disks: properties and observational signatures

2), Eduard Vorobyov (1, Michael Dunham (4) ((1) Institute of Astrophysics, National Academy of Sciences of Ukraine (4) Department of Astronomy, Olga Zakhozhay (3), Southern Federal University (3) Main Astronomical Observatory, University of Vienna (2) Research Institute of Physics, Yale University)

arxiv:1306.4074 v1 · 2013-06-18 · astro-ph.SR · astro-ph.EP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QQ2G5ZQDIWMDS74NUCQ4KLO4JE}

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	2026-05-18T01:49:15.824034Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

84346ee6034598397f8da0a1c52ddc493d84b8115a4f64e6c074a5e04157af9d

Aliases

arxiv: 1306.4074 · arxiv_version: 1306.4074v1 · doi: 10.48550/arxiv.1306.4074 · pith_short_12: QQ2G5ZQDIWMD · pith_short_16: QQ2G5ZQDIWMDS74N · pith_short_8: QQ2G5ZQD

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/QQ2G5ZQDIWMDS74NUCQ4KLO4JE \
  | 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: 84346ee6034598397f8da0a1c52ddc493d84b8115a4f64e6c074a5e04157af9d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ecbfddcd9438e460c350fe5702e48436005242c841aeb841d19eb78f09cadbbf",
    "cross_cats_sorted": [
      "astro-ph.EP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2013-06-18T06:27:44Z",
    "title_canon_sha256": "e5eef18c5ac600edc5495c7c38349c545d74f7b8588ba8e5279e7257f2c56641"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1306.4074",
    "kind": "arxiv",
    "version": 1
  }
}