Pith Number

pith:L4BCFWQR

pith:2011:L4BCFWQRYIP7ZFK3CCSBWFECRT

not attested not anchored not stored refs pending

Cross identification between X-ray and Optical Clusters of Galaxies in the SDSS DR7 Field

Erwin T. Lau, Frank C. van den Bosch, H. J. Mo, Lei Wang, Q. D. Wang, Wentao Luo, Xiaohu Yang, Yu Wang

arxiv:1110.1987 v2 · 2011-10-10 · 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{L4BCFWQRYIP7ZFK3CCSBWFECRT}

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	2026-05-18T02:25:11.678899Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5f0222da11c21ffc955b10a41b14828cd19c50577cc19bc7f25b3ef5f36dc778

Aliases

arxiv: 1110.1987 · arxiv_version: 1110.1987v2 · doi: 10.48550/arxiv.1110.1987 · pith_short_12: L4BCFWQRYIP7 · pith_short_16: L4BCFWQRYIP7ZFK3 · pith_short_8: L4BCFWQR

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/L4BCFWQRYIP7ZFK3CCSBWFECRT \
  | 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: 5f0222da11c21ffc955b10a41b14828cd19c50577cc19bc7f25b3ef5f36dc778

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f7a111e493d9ef97b7d3a6f52955d68f1351c9e3f0009681757cb49ba4af26a5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-10-10T10:22:21Z",
    "title_canon_sha256": "54f6e14d25108879722c1d796827eb47c188347090f9b81753f4c6e573cee386"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1110.1987",
    "kind": "arxiv",
    "version": 2
  }
}