Pith Number

pith:KCV6LSNG

pith:2020:KCV6LSNGWPUPGXQDPMYQLLFMXN

not attested not anchored not stored refs pending

LEGUS and Halpha-LEGUS Observations of Star Clusters in NGC 4449: Improved Ages and the Fraction of Light in Clusters as a Function of Age

Aida Wofford, Alessandra Aloisi, Angela Adamo, Bradley C. Whitmore, Bruce G. Elmegreen, Daniela Calzetti, David Cook, Dimitrios Gouliermis, Elena Sacchi, Eva K. Grebel, Hwihyun Kim, Janice Lee, Kathryn Grasha, Kelsey E. Johnson, Leonardo Ubeda, Linda J. Smith, Michele Cignoni, Monica Tosi, Rupali Chandar

arxiv:2005.02840 v1 · 2020-05-06 · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{KCV6LSNGWPUPGXQDPMYQLLFMXN}

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	2026-07-05T01:00:56.624440Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

50abe5c9a6b3e8f35e037b3105acacbb41462d7d95d3f04644e61b9a72d8fcf0

Aliases

arxiv: 2005.02840 · arxiv_version: 2005.02840v1 · doi: 10.48550/arxiv.2005.02840 · pith_short_12: KCV6LSNGWPUP · pith_short_16: KCV6LSNGWPUPGXQD · pith_short_8: KCV6LSNG

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/KCV6LSNGWPUPGXQDPMYQLLFMXN \
  | 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: 50abe5c9a6b3e8f35e037b3105acacbb41462d7d95d3f04644e61b9a72d8fcf0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f68ee79ad8dc7aaff7ae9563efb082824fd59c4c476ba8651d40d3a5a9f54597",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2020-05-06T14:11:37Z",
    "title_canon_sha256": "203d530df3ac9e3c6dcaab8f5172aff4992e4219520ff94eb784baf3eca0d6fc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2005.02840",
    "kind": "arxiv",
    "version": 1
  }
}