Pith Number

pith:IRZZBCD4

pith:2010:IRZZBCD4IRI2ARJHF267AOZBB4

not attested not anchored not stored refs pending

Spectroscopic confirmation of a galaxy cluster associated with 7C1756+6520 at z=1.416

Audrey Galametz, Carlos De Breuck, Daniel Stern, Fiona A. Harrison, Joel Vernet, Roger L. Griffith, S. Adam Stanford

arxiv:1004.3021 v1 · 2010-04-18 · 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{IRZZBCD4IRI2ARJHF267AOZBB4}

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	2026-05-18T02:07:57.154782Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

447390887c4451a045272ebdf03b210f01335a4fef3cd25eab9f1fceabad6762

Aliases

arxiv: 1004.3021 · arxiv_version: 1004.3021v1 · doi: 10.48550/arxiv.1004.3021 · pith_short_12: IRZZBCD4IRI2 · pith_short_16: IRZZBCD4IRI2ARJH · pith_short_8: IRZZBCD4

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/IRZZBCD4IRI2ARJHF267AOZBB4 \
  | 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: 447390887c4451a045272ebdf03b210f01335a4fef3cd25eab9f1fceabad6762

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f8f2f7224aa901c01168cbe5fcfd7cc9619756805ae576d596b033b5adffbfc4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2010-04-18T13:24:19Z",
    "title_canon_sha256": "d7839a7f5d811629999b840d6f9d77766f2e95ddb2a67459b71891db4e9b21ce"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1004.3021",
    "kind": "arxiv",
    "version": 1
  }
}