Pith Number

pith:ABQQANPC

pith:2009:ABQQANPC3EHRTS7TSUPDHZNVZU

not attested not anchored not stored refs pending

Young stellar populations and star clusters in NGC 1705

A. Aloisi (ESA, F. Annibali (INAF-Oapd, L. Greggio (INAF-Oapd), M. Monelli (IAC), M. Sirianni (ESA, M. Tosi (INAF-Oabo), P. Montegriffo (INAF-Oabo), STScI)

arxiv:0904.3257 v1 · 2009-04-21 · astro-ph.CO · 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{ABQQANPC3EHRTS7TSUPDHZNVZU}

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	2026-05-18T02:13:58.508252Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

00610035e2d90f19cbf3951e33e5b5cd2895cc31725420dff7da560ae5ed4f1f

Aliases

arxiv: 0904.3257 · arxiv_version: 0904.3257v1 · doi: 10.48550/arxiv.0904.3257 · pith_short_12: ABQQANPC3EHR · pith_short_16: ABQQANPC3EHRTS7T · pith_short_8: ABQQANPC

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/ABQQANPC3EHRTS7TSUPDHZNVZU \
  | 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: 00610035e2d90f19cbf3951e33e5b5cd2895cc31725420dff7da560ae5ed4f1f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6605f96eabe4ac89b444c45895152fdc8a94b3e0b10494d2587b5374b9338411",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-04-21T14:32:47Z",
    "title_canon_sha256": "dae0894876948b3ba2c2ca8d86f88943c70f718a2bf83670c6612abafd4bd8ee"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0904.3257",
    "kind": "arxiv",
    "version": 1
  }
}