Pith Number

pith:2PPIYX2L

pith:2011:2PPIYX2LR52PRRATOB7BXVFXBI

not attested not anchored not stored refs pending

The Distribution of the Elements in the Galactic Disk III. A Reconsideration of Cepheids from l = 30 to 250 Degrees

David L. Lambert, R. Earle Luck

arxiv:1108.1947 v1 · 2011-08-09 · astro-ph.GA · 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{2PPIYX2LR52PRRATOB7BXVFXBI}

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	2026-05-18T02:00:59.810240Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d3de8c5f4b8f74f8c413707e1bd4b70a1f4ed1b08a3337ebfcaaeac06f5178fe

Aliases

arxiv: 1108.1947 · arxiv_version: 1108.1947v1 · doi: 10.48550/arxiv.1108.1947 · pith_short_12: 2PPIYX2LR52P · pith_short_16: 2PPIYX2LR52PRRAT · pith_short_8: 2PPIYX2L

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/2PPIYX2LR52PRRATOB7BXVFXBI \
  | 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: d3de8c5f4b8f74f8c413707e1bd4b70a1f4ed1b08a3337ebfcaaeac06f5178fe

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0a1b76b2229c8a08fc9bf5f62849fa18f2b0718a1eadc4aed7627529e7571263",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2011-08-09T15:03:33Z",
    "title_canon_sha256": "3aad1fd860c2fdbf6cc56f2e5a29c6bfa99462714b793aa634ac0cbe0b99c5ab"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1108.1947",
    "kind": "arxiv",
    "version": 1
  }
}