Pith Number

pith:2CUK7IDJ

pith:2003:2CUK7IDJA3UYM7X7JGBX335NBA

not attested not anchored not stored refs pending

Young stars and their circumstellar disks in the Sigma Orionis cluster

J.M. Oliveira, J.Th. van Loon, M.J. Kenyon (Keele University, R.D. Jeffries, UK)

arxiv:astro-ph/0305501 v1 · 2003-05-27 · 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{2CUK7IDJA3UYM7X7JGBX335NBA}

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	2026-05-18T01:00:25.027848Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d0a8afa06906e9867eff49837defad080349114ac24b8d0f8bc6b61a6f26fd80

Aliases

arxiv: astro-ph/0305501 · arxiv_version: astro-ph/0305501v1 · doi: 10.48550/arxiv.astro-ph/0305501 · pith_short_12: 2CUK7IDJA3UY · pith_short_16: 2CUK7IDJA3UYM7X7 · pith_short_8: 2CUK7IDJ

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/2CUK7IDJA3UYM7X7JGBX335NBA \
  | 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: d0a8afa06906e9867eff49837defad080349114ac24b8d0f8bc6b61a6f26fd80

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "479ce9ba6c96f7fb874e82be8d0ebbcaaebe4603cdfff40bf1df8d20c9e874f7",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2003-05-27T09:18:37Z",
    "title_canon_sha256": "a5c30af0978408b39785d4a76d9e034324457bb5e8e00a14b6b4623845980379"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0305501",
    "kind": "arxiv",
    "version": 1
  }
}