Pith Number

pith:Y7SJXLGF

pith:2005:Y7SJXLGF3RS5CE2CUQQQPH5PDR

not attested not anchored not stored refs pending

Star formation in the merging galaxy cluster Abell 3921

A. Cappi, C. Benoist, C. Ferrari, E. Slezak, L. Feretti, R.W. Hunstead, S. Maurogordato, S. Schindler

arxiv:astro-ph/0510072 v1 · 2005-10-04 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{Y7SJXLGF3RS5CE2CUQQQPH5PDR}

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	2026-05-18T01:07:26.146921Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c7e49bacc5dc65d11342a421079faf1c6932dc4c50d283da1cd9854ba310dbb5

Aliases

arxiv: astro-ph/0510072 · arxiv_version: astro-ph/0510072v1 · doi: 10.48550/arxiv.astro-ph/0510072 · pith_short_12: Y7SJXLGF3RS5 · pith_short_16: Y7SJXLGF3RS5CE2C · pith_short_8: Y7SJXLGF

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/Y7SJXLGF3RS5CE2CUQQQPH5PDR \
  | 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: c7e49bacc5dc65d11342a421079faf1c6932dc4c50d283da1cd9854ba310dbb5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "78d3a9752453307b2ececaa59da6e303858433aa69ae54124ae77d138514fb5e",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2005-10-04T09:06:17Z",
    "title_canon_sha256": "6bab064856ee18093e600577e9ed551c73529e986d4b415a9752a123661d8eb0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0510072",
    "kind": "arxiv",
    "version": 1
  }
}