Pith Number

pith:NQ4UVNRP

pith:2021:NQ4UVNRPDULW4CPBZXLGO5KL2N

not attested not anchored not stored refs pending

The young massive SMC cluster NGC 330 seen by MUSE II. Multiplicity properties of the massive-star population

A. de Koter, C. J. Evans, C. Wang, F. R. N. Schneider, F. Tramper, G. Banyard, H. Sana, J. Bodensteiner, L. Mahy, L. R. Patrick, N. Langer, S. E. de Mink, Y. G\"otberg

arxiv:2104.13409 v1 · 2021-04-27 · astro-ph.SR · 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{NQ4UVNRPDULW4CPBZXLGO5KL2N}

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	2026-07-05T03:06:24.807202Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6c394ab62f1d176e09e1cdd667754bd375536c2998f5bdc55c2428bbb2d1eca5

Aliases

arxiv: 2104.13409 · arxiv_version: 2104.13409v1 · doi: 10.48550/arxiv.2104.13409 · pith_short_12: NQ4UVNRPDULW · pith_short_16: NQ4UVNRPDULW4CPB · pith_short_8: NQ4UVNRP

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/NQ4UVNRPDULW4CPBZXLGO5KL2N \
  | 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: 6c394ab62f1d176e09e1cdd667754bd375536c2998f5bdc55c2428bbb2d1eca5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "086014525671ece241b39962e3dc0594a9784d38efb6df71dbdaa2ae33c8a058",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2021-04-27T18:07:49Z",
    "title_canon_sha256": "20449dd8c5d9a71e78783a494dd9cf1b889838c9ecf6cae5f19bd6392426e449"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2104.13409",
    "kind": "arxiv",
    "version": 1
  }
}