Pith Number

pith:U64MAA4X

pith:2009:U64MAA4XJBUNU22ZFZRRJHH32W

not attested not anchored not stored refs pending

The Gemini/HST Cluster Project: Structural and Photometric Properties of Galaxies in Three z =0.28-0.89 Clusters

Inger Jorgensen, Jordi Barr, Kathleen Flint, Kristin Chiboucas, Maela Collobert, Roger Davies

arxiv:0910.0511 v1 · 2009-10-03 · 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{U64MAA4XJBUNU22ZFZRRJHH32W}

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	2026-05-18T04:37:33.746625Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a7b8c003974868da6b592e63149cfbd5891027e611640b1a6c53da8c5f47bdb9

Aliases

arxiv: 0910.0511 · arxiv_version: 0910.0511v1 · doi: 10.48550/arxiv.0910.0511 · pith_short_12: U64MAA4XJBUN · pith_short_16: U64MAA4XJBUNU22Z · pith_short_8: U64MAA4X

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/U64MAA4XJBUNU22ZFZRRJHH32W \
  | 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: a7b8c003974868da6b592e63149cfbd5891027e611640b1a6c53da8c5f47bdb9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2307a99711b507a2e00a1559a881e91f8f86c77a863ffa70a2f07b888eae5b05",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-10-03T04:11:21Z",
    "title_canon_sha256": "1ea7a0cd5e7e606a1e667c19362142e6f0369f517621c3e7a278f89d773c69d4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0910.0511",
    "kind": "arxiv",
    "version": 1
  }
}