Pith Number

pith:VDTXF3DF

pith:2006:VDTXF3DFFPAY6LF6UNKT47KQCC

not attested not anchored not stored refs pending

The radii of thousands of star clusters in M51 with HST/ACS

H. J. G. L. M. Lamers, M. Gieles, M. R. Haas, N. Bastian, R. A. Scheepmaker, S. S. Larsen

arxiv:astro-ph/0605022 v1 · 2006-05-01 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VDTXF3DFFPAY6LF6UNKT47KQCC}

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	2026-05-18T01:40:32.015214Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a8e772ec652bc18f2cbea3553e7d5010b247977eca431511a45c9f3bf825a2c3

Aliases

arxiv: astro-ph/0605022 · arxiv_version: astro-ph/0605022v1 · doi: 10.48550/arxiv.astro-ph/0605022 · pith_short_12: VDTXF3DFFPAY · pith_short_16: VDTXF3DFFPAY6LF6 · pith_short_8: VDTXF3DF

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/VDTXF3DFFPAY6LF6UNKT47KQCC \
  | 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: a8e772ec652bc18f2cbea3553e7d5010b247977eca431511a45c9f3bf825a2c3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f229e72c6eeff9148e577989ba992fa9fd3d955a20697517bba738ff4d7f5947",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2006-05-01T09:48:35Z",
    "title_canon_sha256": "4e3ca41a4c27dff40676810adea4811cd3431495efdb88e5bed3340764110ee7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0605022",
    "kind": "arxiv",
    "version": 1
  }
}