Pith Number

pith:COJO7HJ3

pith:2011:COJO7HJ3UIXIZLUYYWVZ4XMXQG

not attested not anchored not stored refs pending

Properties of the HII region populations of M51 and NGC 4449 from Halpha images with ACS on HST

John E. Beckman, Leonel Guti\'errez, Valeria Buenrostro

arxiv:1101.2614 v1 · 2011-01-13 · 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{COJO7HJ3UIXIZLUYYWVZ4XMXQG}

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	2026-05-18T02:03:40.331217Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1392ef9d3ba22e8cae98c5ab9e5d9781bfc62d0cba236842fd94d75c0b123851

Aliases

arxiv: 1101.2614 · arxiv_version: 1101.2614v1 · doi: 10.48550/arxiv.1101.2614 · pith_short_12: COJO7HJ3UIXI · pith_short_16: COJO7HJ3UIXIZLUY · pith_short_8: COJO7HJ3

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/COJO7HJ3UIXIZLUYYWVZ4XMXQG \
  | 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: 1392ef9d3ba22e8cae98c5ab9e5d9781bfc62d0cba236842fd94d75c0b123851

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "16bb238fff97fb39c21585431a8a655e649593b5db618fba216a4b455347d529",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-01-13T17:35:14Z",
    "title_canon_sha256": "90f7da7c441b00e3bdd3d868b0692388ab1bc3c862f458e882dcdd942dc56d36"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1101.2614",
    "kind": "arxiv",
    "version": 1
  }
}