Pith Number

pith:CTPJ4ODA

pith:2012:CTPJ4ODAAVXVSOUTFWJRFAZ2JE

not attested not anchored not stored refs pending

Data and 2D scaling relations for galaxies in Abell 1689: a hint of size evolution at z~0.2

E. Dalla Bonta, R. C. W. Houghton, R. Masters, Roger L. Davies

arxiv:1203.1664 v1 · 2012-03-08 · 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{CTPJ4ODAAVXVSOUTFWJRFAZ2JE}

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	2026-05-18T01:58:13.292468Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

14de9e3860056f593a932d9312833a491076beec7eca9a5979a60f5f83e2319c

Aliases

arxiv: 1203.1664 · arxiv_version: 1203.1664v1 · doi: 10.48550/arxiv.1203.1664 · pith_short_12: CTPJ4ODAAVXV · pith_short_16: CTPJ4ODAAVXVSOUT · pith_short_8: CTPJ4ODA

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/CTPJ4ODAAVXVSOUTFWJRFAZ2JE \
  | 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: 14de9e3860056f593a932d9312833a491076beec7eca9a5979a60f5f83e2319c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fcd3a5f709256368e8249b6ab891bcf9713d4ade770f0a8b7951ead4d85f383b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2012-03-08T00:10:09Z",
    "title_canon_sha256": "2e46283472f69cc39399ba709f9b3b3cc20da50af816a6cc86293f527750cee3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1203.1664",
    "kind": "arxiv",
    "version": 1
  }
}