Pith Number

pith:6UMLWBUZ

pith:2009:6UMLWBUZEUO2VPZQOGSRLIK2VT

not attested not anchored not stored refs pending

The current population of benchmark brown dwarfs

A.C. Day-Jones, B. Burningham, D.J. Pinfield, H.R.A. Jones, J. Gallardo, J.R.A. Clarke, J.S. Jenkins, M.C. Galvez-Ortiz, M.T. Ruiz, Z.H. Zhang

arxiv:0912.5339 v1 · 2009-12-29 · 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{6UMLWBUZEUO2VPZQOGSRLIK2VT}

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	2026-05-18T02:10:13.262484Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f518bb0699251daabf3071a515a15aacc77c0651a1dbebef2feee5daf347fc11

Aliases

arxiv: 0912.5339 · arxiv_version: 0912.5339v1 · doi: 10.48550/arxiv.0912.5339 · pith_short_12: 6UMLWBUZEUO2 · pith_short_16: 6UMLWBUZEUO2VPZQ · pith_short_8: 6UMLWBUZ

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/6UMLWBUZEUO2VPZQOGSRLIK2VT \
  | 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: f518bb0699251daabf3071a515a15aacc77c0651a1dbebef2feee5daf347fc11

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0b8cb79545ecdee8fdf72679d69fad1b4a51c04218b8daebe3cb75baa650f462",
    "cross_cats_sorted": [
      "astro-ph.EP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2009-12-29T17:33:16Z",
    "title_canon_sha256": "d5bdb4aee71000884e5f1e20e584576f7bba7627851101a28a40a1e1ef6c16b7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0912.5339",
    "kind": "arxiv",
    "version": 1
  }
}