Pith Number

pith:N57QXSKM

pith:2009:N57QXSKM73HOQ5LR2TWMWFCVEU

not attested not anchored not stored refs pending

Star Clusters in the Interacting Galaxy System Arp 284

Beverly J. Smith (East Tenn.State), Bradley W. Peterson (Iowa State), Curtis Struck (Iowa State), Mark Hancock (UC Riverside)

arxiv:0908.2619 v1 · 2009-08-18 · 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{N57QXSKM73HOQ5LR2TWMWFCVEU}

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	2026-05-18T02:12:25.482600Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6f7f0bc94cfecee87571d4eccb145525239c0c2a48022b4b32c334af7acdb2f3

Aliases

arxiv: 0908.2619 · arxiv_version: 0908.2619v1 · doi: 10.48550/arxiv.0908.2619 · pith_short_12: N57QXSKM73HO · pith_short_16: N57QXSKM73HOQ5LR · pith_short_8: N57QXSKM

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/N57QXSKM73HOQ5LR2TWMWFCVEU \
  | 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: 6f7f0bc94cfecee87571d4eccb145525239c0c2a48022b4b32c334af7acdb2f3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9f36cadd410c07840b5f2a44e80a8e82da571aa7da38297d493a97accf8f1f47",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-08-18T19:46:16Z",
    "title_canon_sha256": "bda789365e0b37aaf9100d72b305bb28d1de6ff08d05d3f6ea61c0270154d37e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0908.2619",
    "kind": "arxiv",
    "version": 1
  }
}