Pith Number

pith:ZUJWG6ZT

pith:2009:ZUJWG6ZTBMHMDQFOKVAUGUIWCZ

not attested not anchored not stored refs pending

Optical identification of XMM sources in the CFHTLS

(2) IAP, (3) IUCAA, (4) ESO, (5) AIP, A.J. Fox (4), A. Schwope (5) ((1) IIA, Bangalore, Chile, C. S. Stalin (1), F. Coppolani (2), Paris, Postdam), P. Petitjean (2), Pune, R. Srianand (3)

arxiv:0909.0464 v1 · 2009-09-02 · astro-ph.CO

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ZUJWG6ZTBMHMDQFOKVAUGUIWCZ}

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	2026-05-18T02:12:00.728944Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cd13637b330b0ec1c0ae5541435116166b418766b44809200724b570d6131228

Aliases

arxiv: 0909.0464 · arxiv_version: 0909.0464v1 · doi: 10.48550/arxiv.0909.0464 · pith_short_12: ZUJWG6ZTBMHM · pith_short_16: ZUJWG6ZTBMHMDQFO · pith_short_8: ZUJWG6ZT

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/ZUJWG6ZTBMHMDQFOKVAUGUIWCZ \
  | 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: cd13637b330b0ec1c0ae5541435116166b418766b44809200724b570d6131228

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "550ec2725c1ce4993af3506254aa620fc9669f50cc9ff7d4dd630ba0dabe1e35",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-09-02T16:05:26Z",
    "title_canon_sha256": "fa3ef7d147a9e91a1af161a3e207ae37f6f180089710dce94149336d4c4dd910"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0909.0464",
    "kind": "arxiv",
    "version": 1
  }
}