Pith Number

pith:MC4ZVJTP

pith:2007:MC4ZVJTPGZIA2TZNHECD52Z6VL

not attested not anchored not stored refs pending

Pre-main sequence stars in open clusters. I. The DAY-I catalogue

A.J. Delgado, E.J. Alfaro, J.L. Yun

arxiv:astro-ph/0703367 v1 · 2007-03-14 · 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{MC4ZVJTPGZIA2TZNHECD52Z6VL}

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	2026-07-04T17:07:46.857293Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

60b99aa66f36500d4f2d39043eeb3eaae83f4303122d04ee02710de0d4837b87

Aliases

arxiv: astro-ph/0703367 · arxiv_version: astro-ph/0703367v1 · doi: 10.48550/arxiv.astro-ph/0703367 · pith_short_12: MC4ZVJTPGZIA · pith_short_16: MC4ZVJTPGZIA2TZN · pith_short_8: MC4ZVJTP

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/MC4ZVJTPGZIA2TZNHECD52Z6VL \
  | 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: 60b99aa66f36500d4f2d39043eeb3eaae83f4303122d04ee02710de0d4837b87

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d323a3f6e81a961b3eaa9ce0bc7f4f4e8861778aa9863f9d772dfa1387984827",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2007-03-14T16:30:43Z",
    "title_canon_sha256": "f0022e6ce63702c16aa90707ed3b1ebf8b75b8b88fbc24455827ef69e0d16833"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0703367",
    "kind": "arxiv",
    "version": 1
  }
}