Pith Number

pith:6GWM5N4H

pith:2009:6GWM5N4HI6BY3PBBUCMOPKV7ZM

not attested not anchored not stored refs pending

First Direct Simulation of Brown Dwarf Formation in a Compact Cloud Core

Masahiro N. Machida, Shu-ichiro Inutsuka, Tomoaki Matsumoto

arxiv:0907.3255 v1 · 2009-07-19 · 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{6GWM5N4HI6BY3PBBUCMOPKV7ZM}

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	2026-05-18T02:12:55.806432Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f1acceb78747838dbc21a098e7aabfcb0dbc0650edcb54442cd1ff2cdbdebb63

Aliases

arxiv: 0907.3255 · arxiv_version: 0907.3255v1 · doi: 10.48550/arxiv.0907.3255 · pith_short_12: 6GWM5N4HI6BY · pith_short_16: 6GWM5N4HI6BY3PBB · pith_short_8: 6GWM5N4H

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/6GWM5N4HI6BY3PBBUCMOPKV7ZM \
  | 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: f1acceb78747838dbc21a098e7aabfcb0dbc0650edcb54442cd1ff2cdbdebb63

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "74cc9b7da91fe9b0fcebd75211e88445c3ae75ed8aa9246edfcf7eef6262e181",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2009-07-19T05:11:01Z",
    "title_canon_sha256": "fb33220b1d753e564b6e9042a86d6b4b2778c0d54ec6e9c9a5b6fba966b32eaf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0907.3255",
    "kind": "arxiv",
    "version": 1
  }
}