Pith Number

pith:CNZW34SK

pith:2009:CNZW34SK3PHUVUOXRWWLB2Q5IA

not attested not anchored not stored refs pending

The HI gas content of galaxies around Abell 370, a galaxy cluster at z = 0.37

Bradley E. Tucker, Brian P. Schmidt, Frank H. Briggs, Jayaram N. Chengalur, Matthew Colless, Michael B. Pracy, Philip Lah, Roberto De Propris, Shaun Ferris

arxiv:0907.1416 v2 · 2009-07-09 · 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{CNZW34SK3PHUVUOXRWWLB2Q5IA}

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	2026-05-18T02:13:04.462887Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

13736df24adbcf4ad1d78dacb0ea1d401c7d5c9460779721397b57a48ffb6ed5

Aliases

arxiv: 0907.1416 · arxiv_version: 0907.1416v2 · doi: 10.48550/arxiv.0907.1416 · pith_short_12: CNZW34SK3PHU · pith_short_16: CNZW34SK3PHUVUOX · pith_short_8: CNZW34SK

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/CNZW34SK3PHUVUOXRWWLB2Q5IA \
  | 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: 13736df24adbcf4ad1d78dacb0ea1d401c7d5c9460779721397b57a48ffb6ed5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "03c5cd027d8aa135923f98a4906da92ab8d0d8aee811335756535edb08f46532",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-07-09T07:44:41Z",
    "title_canon_sha256": "14def5d604a8943892da41c7c8ce360d6b72c33fb87d64ffc3ca4613b13ada98"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0907.1416",
    "kind": "arxiv",
    "version": 2
  }
}