Pith Number

pith:5RM6WJ3M

pith:2009:5RM6WJ3MJVTK4NVDL34U7YYXN4

not attested not anchored not stored refs pending

A census of very-low-mass stars and brown dwarfs in the sigma Orionis cluster

(2) CAB, (3) SUPA, Edinburgh, E. L. Martin (2), Madrid, M. R. Zapatero Osorio (1), N. C. Hambly (3) ((1) IAC, N. Lodieu (1), R. Rebolo (1), Spain, Tenerife, UK)

arxiv:0907.2185 v2 · 2009-07-13 · 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{5RM6WJ3MJVTK4NVDL34U7YYXN4}

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	2026-05-18T02:13:03.470744Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ec59eb276c4d66ae36a35ef94fe3176f30d1644d1ffa7547c809d1cddc736155

Aliases

arxiv: 0907.2185 · arxiv_version: 0907.2185v2 · doi: 10.48550/arxiv.0907.2185 · pith_short_12: 5RM6WJ3MJVTK · pith_short_16: 5RM6WJ3MJVTK4NVD · pith_short_8: 5RM6WJ3M

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/5RM6WJ3MJVTK4NVDL34U7YYXN4 \
  | 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: ec59eb276c4d66ae36a35ef94fe3176f30d1644d1ffa7547c809d1cddc736155

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2b8de6255c7273af85e16f1980e33b18238b712d9c6bf77137f877beba9fb886",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2009-07-13T15:08:30Z",
    "title_canon_sha256": "c692161e9b7706f708099364c6d1241b084dbee7054276df1efcbae78e467c5d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0907.2185",
    "kind": "arxiv",
    "version": 2
  }
}