Pith Number

pith:7YYZF7JW

pith:2008:7YYZF7JW6ZSFDB2ZJB3T4YX6XL

not attested not anchored not stored refs pending

A deep look into the cores of young clusters I. sigma-Orionis

D. Barrado y Navascues, D. Nuernberger, E. L. Martin, E. Marchetti, F. Marchis, H. Bouy, J. Kolb, M. G. Petr-Gotzens, M. Sterzik, N. Huelamo, R. Koehler, V. D. Ivanov

arxiv:0808.3890 v2 · 2008-08-28 · 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{7YYZF7JW6ZSFDB2ZJB3T4YX6XL}

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	2026-07-04T17:12:30.069163Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fe3192fd36f66451875948773e62febaff81346770ba71f89ea9dcf3bd968032

Aliases

arxiv: 0808.3890 · arxiv_version: 0808.3890v2 · doi: 10.48550/arxiv.0808.3890 · pith_short_12: 7YYZF7JW6ZSF · pith_short_16: 7YYZF7JW6ZSFDB2Z · pith_short_8: 7YYZF7JW

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/7YYZF7JW6ZSFDB2ZJB3T4YX6XL \
  | 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: fe3192fd36f66451875948773e62febaff81346770ba71f89ea9dcf3bd968032

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4952df940e054bf08d38643deb6114c28ff4870dd09b1fa8a379ca5aee7cd8af",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-08-28T12:02:56Z",
    "title_canon_sha256": "ba317e6b8cae0fb8f4bfd3e2923e2c8b68e8025f79c87eb69a1b6b47e82482b4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0808.3890",
    "kind": "arxiv",
    "version": 2
  }
}