Pith Number

pith:MA7FJ4VB

pith:2011:MA7FJ4VBFJGODRCO2ZTPJAC7FC

not attested not anchored not stored refs pending

Cluster 77 in NGC 4449: The nucleus of a satellite galaxy being transformed into a globular cluster?

Alessandra Aloisi (STScI), David Martinez-Delgado (MPIA), Francesca Annibali (INAF-OABo), Monica Tosi (INAF-OABo), Roeland P. van der Marel (STScI)

arxiv:1111.5861 v1 · 2011-11-24 · 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{MA7FJ4VBFJGODRCO2ZTPJAC7FC}

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	2026-05-18T04:07:42.123503Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

603e54f2a12a4ce1c44ed666f4805f28b8b0303957928c26568946384ca4f570

Aliases

arxiv: 1111.5861 · arxiv_version: 1111.5861v1 · doi: 10.48550/arxiv.1111.5861 · pith_short_12: MA7FJ4VBFJGO · pith_short_16: MA7FJ4VBFJGODRCO · pith_short_8: MA7FJ4VB

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/MA7FJ4VBFJGODRCO2ZTPJAC7FC \
  | 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: 603e54f2a12a4ce1c44ed666f4805f28b8b0303957928c26568946384ca4f570

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "01733f469e1d2d7b2e2eaacf98b1e453fa6f5346527e37a4d0ed6f6414a4f901",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-11-24T22:02:11Z",
    "title_canon_sha256": "78b97d532101c6dcf313c1c80b2007e0065fc3c09a73cc2559d40622b7f79a4c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1111.5861",
    "kind": "arxiv",
    "version": 1
  }
}