Pith Number

pith:6VRQKLDW

pith:2002:6VRQKLDWXRQTM6QAW3Y4BAXCHF

not attested not anchored not stored refs pending

Stellar Archaeology: a Keck Pilot Program on Extremely Metal-Poor Stars From the Hamburg/ESO Survey. I Stellar Parameters

Judith G. Cohen, Norbert Christlieb, Raffaele Gratton & Eugenio Carretta, Timothy C. Beers

arxiv:astro-ph/0204082 v1 · 2002-04-04 · 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{6VRQKLDWXRQTM6QAW3Y4BAXCHF}

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	2026-07-04T16:29:39.311503Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f563052c76bc61367a00b6f1c082e239490337be8e93c2327c20b1167dbee86c

Aliases

arxiv: astro-ph/0204082 · arxiv_version: astro-ph/0204082v1 · doi: 10.48550/arxiv.astro-ph/0204082 · pith_short_12: 6VRQKLDWXRQT · pith_short_16: 6VRQKLDWXRQTM6QA · pith_short_8: 6VRQKLDW

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/6VRQKLDWXRQTM6QAW3Y4BAXCHF \
  | 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: f563052c76bc61367a00b6f1c082e239490337be8e93c2327c20b1167dbee86c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8fe4e532a0fd97994e4b7ecd496f753ab0882c67a362043673cea94502f2417d",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2002-04-04T16:12:02Z",
    "title_canon_sha256": "84e9b51aa894db27724bf6297c3ae5c7c1455640b1a8e6bc8bb6d60b01d2706c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0204082",
    "kind": "arxiv",
    "version": 1
  }
}