Pith Number

pith:FFPRFP7H

pith:2015:FFPRFP7HU4VLEH23ARSG7KMILK

not attested not anchored not stored refs pending

Evidence for temporal evolution in the M33 disc as traced by its star clusters

Antonio Aparicio, Ata Sarajedini, Carme Gallart, Izaskun San Roman, Michael A. Beasley

arxiv:1504.06128 v1 · 2015-04-23 · 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{FFPRFP7HU4VLEH23ARSG7KMILK}

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	2026-05-18T02:18:02.475386Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

295f12bfe7a72ab21f5b04646fa9885a8c3670a98abe074a8e6e4e8a0865aa41

Aliases

arxiv: 1504.06128 · arxiv_version: 1504.06128v1 · doi: 10.48550/arxiv.1504.06128 · pith_short_12: FFPRFP7HU4VL · pith_short_16: FFPRFP7HU4VLEH23 · pith_short_8: FFPRFP7H

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/FFPRFP7HU4VLEH23ARSG7KMILK \
  | 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: 295f12bfe7a72ab21f5b04646fa9885a8c3670a98abe074a8e6e4e8a0865aa41

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3b3d5fbc328caf6fe1e4f0d4886355ec45647f598b30e785e3e88bb679f4faeb",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2015-04-23T11:32:12Z",
    "title_canon_sha256": "92cb0aed387e393281fe306d8c8364e279d5d0754f24511437a4cba60f79a2f3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.06128",
    "kind": "arxiv",
    "version": 1
  }
}