Pith Number

pith:NQG6KGU4

pith:2019:NQG6KGU4JZQX7HKB2OQ34Y4DAQ

not attested not anchored not stored refs pending

Is There a Fundamental Upper Limit to the Mass of a Star Cluster?

Eva Schinnerer, Glenn van de Ven, Mark A. Norris, Ryan Leaman, Sheila J. Kannappan

arxiv:1908.00550 v1 · 2019-08-01 · 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{NQG6KGU4JZQX7HKB2OQ34Y4DAQ}

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	2026-07-04T23:51:06.433674Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6c0de51a9c4e617f9d41d3a1be63830426fee8fa2f40a5061d39d4d0c4cdadce

Aliases

arxiv: 1908.00550 · arxiv_version: 1908.00550v1 · doi: 10.48550/arxiv.1908.00550 · pith_short_12: NQG6KGU4JZQX · pith_short_16: NQG6KGU4JZQX7HKB · pith_short_8: NQG6KGU4

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/NQG6KGU4JZQX7HKB2OQ34Y4DAQ \
  | 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: 6c0de51a9c4e617f9d41d3a1be63830426fee8fa2f40a5061d39d4d0c4cdadce

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5c651a46d36202cb8f742c1fad3c109c297b45e669bc53c5026fbf59636d5349",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2019-08-01T18:00:01Z",
    "title_canon_sha256": "6d0b927a527bcf4e5c90438cb27ee14a2930ec8bcc81bed2168e766209393392"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.00550",
    "kind": "arxiv",
    "version": 1
  }
}