Pith Number

pith:R74QSU7Q

pith:2010:R74QSU7QHTM455AWKW4VGPHVHX

not attested not anchored not stored refs pending

Wide-field HST/ACS images of M81: The Population of Compact Star Clusters

D. Rosa-Gonzalez (INAOE, Mexico), M. Santiago-Cortes (INAOE, Y. D. Mayya (INAOE

arxiv:1002.3370 v1 · 2010-02-17 · 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{R74QSU7QHTM455AWKW4VGPHVHX}

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	2026-05-18T02:09:00.013524Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8ff90953f03cd9cef41655b9533cf53df9d10b6a1b8e356e9ee63d48abaf140e

Aliases

arxiv: 1002.3370 · arxiv_version: 1002.3370v1 · doi: 10.48550/arxiv.1002.3370 · pith_short_12: R74QSU7QHTM4 · pith_short_16: R74QSU7QHTM455AW · pith_short_8: R74QSU7Q

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/R74QSU7QHTM455AWKW4VGPHVHX \
  | 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: 8ff90953f03cd9cef41655b9533cf53df9d10b6a1b8e356e9ee63d48abaf140e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cd639051df1b7fdbc0312803a72c8752023869750d6de27ee27e9a2875be6811",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2010-02-17T21:12:06Z",
    "title_canon_sha256": "2934de9cf8ed08e1b2416a4c0640c551c48d5a7f4df828c54ef0b67bdc53aa96"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1002.3370",
    "kind": "arxiv",
    "version": 1
  }
}