Pith Number

pith:L7BDZEWU

pith:1993:L7BDZEWUMQW5DVODMBTSORTYZB

not attested not anchored not stored refs pending

A New Method for Estimating the Distance to Young Open Clusters

Andrew Collier-Cameron (University of Sussex, Brighton BN1 9QH.), Mark A. O'Dell, Martin A. Hendry

arxiv:astro-ph/9310035 v1 · 1993-10-15 · 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{L7BDZEWUMQW5DVODMBTSORTYZB}

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	2026-05-18T01:40:26.467425Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5fc23c92d4642dd1d5c36067274678c86940d275a01f55cd647a8f4e782fa78a

Aliases

arxiv: astro-ph/9310035 · arxiv_version: astro-ph/9310035v1 · doi: 10.48550/arxiv.astro-ph/9310035 · pith_short_12: L7BDZEWUMQW5 · pith_short_16: L7BDZEWUMQW5DVOD · pith_short_8: L7BDZEWU

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/L7BDZEWUMQW5DVODMBTSORTYZB \
  | 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: 5fc23c92d4642dd1d5c36067274678c86940d275a01f55cd647a8f4e782fa78a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0ef5b7b11e51c773d0383a3cb2c7e8ac4fbc669775b6411f6349c485d5d58e41",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1993-10-15T13:10:00Z",
    "title_canon_sha256": "ef61713cb7f60879ee95504ebaad1afc52ddca8d90cc748936d7b6dc08833ff0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9310035",
    "kind": "arxiv",
    "version": 1
  }
}