Pith Number

pith:CLRNC4DG

pith:1999:CLRNC4DGZRAIXPLTRSWHNIQQI4

not attested not anchored not stored refs pending

Medium-resolution optical spectroscopy of young stellar and sub-stellar M-dwarfs in the Cha I dark cloud

Fernando Comeron (ESO Garching), Ralph Neuhaeuser (MPE Garching)

arxiv:astro-ph/9908265 v1 · 1999-08-24 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{CLRNC4DGZRAIXPLTRSWHNIQQI4}

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	2026-05-18T01:07:36.126067Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

12e2d17066cc408bbd738cac76a21047278595bd484f63e48c7f8041361df3bf

Aliases

arxiv: astro-ph/9908265 · arxiv_version: astro-ph/9908265v1 · doi: 10.48550/arxiv.astro-ph/9908265 · pith_short_12: CLRNC4DGZRAI · pith_short_16: CLRNC4DGZRAIXPLT · pith_short_8: CLRNC4DG

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/CLRNC4DGZRAIXPLTRSWHNIQQI4 \
  | 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: 12e2d17066cc408bbd738cac76a21047278595bd484f63e48c7f8041361df3bf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b0d80a75ca33cc99d3bcf60ea73da62813023ca226ac16c982b683cce4d39920",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1999-08-24T11:44:15Z",
    "title_canon_sha256": "1c678649fa3ea8dd6ccc1333a80439889a4681f5d750737da6e435aee6a47d8d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9908265",
    "kind": "arxiv",
    "version": 1
  }
}