Pith Number

pith:CDT3BEXZ

pith:2007:CDT3BEXZ3JEB44XFFLOSKOEF2K

not attested not anchored not stored refs pending

Pre-main-sequence stars in the young open cluster NGC 1893: II. Evidence for triggered massive star formation

Amparo Marco (Alicante), Gianluca Israel (OAR), Guillem Bernabeu (Alicante), Ignacio Negueruela (Alicante)

arxiv:astro-ph/0703706 v1 · 2007-03-28 · 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{CDT3BEXZ3JEB44XFFLOSKOEF2K}

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	2026-05-18T04:24:04.945087Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

10e7b092f9da481e72e52add253885d2ab3a6879059461043141ffb2921b7293

Aliases

arxiv: astro-ph/0703706 · arxiv_version: astro-ph/0703706v1 · doi: 10.48550/arxiv.astro-ph/0703706 · pith_short_12: CDT3BEXZ3JEB · pith_short_16: CDT3BEXZ3JEB44XF · pith_short_8: CDT3BEXZ

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/CDT3BEXZ3JEB44XFFLOSKOEF2K \
  | 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: 10e7b092f9da481e72e52add253885d2ab3a6879059461043141ffb2921b7293

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "63591fa61fb4f5b0bf7bca382f9912a6ffa8d38c7bedfdd1623eb8faae891fe0",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2007-03-28T08:28:49Z",
    "title_canon_sha256": "5c0a577e4844e01012f6f7c4375454baee70ddb5fa1d3fd8afb26972671dcfb3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0703706",
    "kind": "arxiv",
    "version": 1
  }
}