Pith Number

pith:2MQQ7MFB

pith:2020:2MQQ7MFBPWREOUNE653Y2LN6IT

not attested not anchored not stored refs pending

Multiplicity of the red supergiant population in the young massive cluster NGC 330

A. de Koter, A. Herrero, C. J. Evans, D. J. Lennon, H. Sana, I. Negueruela, J. Bodensteiner, L. R. Patrick, N. Britavskiy, R. Dorda

arxiv:2001.02700 v1 · 2020-01-08 · 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{2MQQ7MFBPWREOUNE653Y2LN6IT}

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	2026-07-05T00:45:19.176595Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d3210fb0a17da24751a4f7778d2dbe44c3dc12cc4b3d2e43754c0f8569acfdfe

Aliases

arxiv: 2001.02700 · arxiv_version: 2001.02700v1 · doi: 10.48550/arxiv.2001.02700 · pith_short_12: 2MQQ7MFBPWRE · pith_short_16: 2MQQ7MFBPWREOUNE · pith_short_8: 2MQQ7MFB

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/2MQQ7MFBPWREOUNE653Y2LN6IT \
  | 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: d3210fb0a17da24751a4f7778d2dbe44c3dc12cc4b3d2e43754c0f8569acfdfe

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7a90950903bc75e6dc5b51d4e201892edccd44a0f22f1a3a5dc3aa99d0a434b9",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2020-01-08T19:03:52Z",
    "title_canon_sha256": "f3b7fe3157ddb41ad2e31c4786e70b3b8919d2af87c4c68e77cfb8d47c63d2d2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2001.02700",
    "kind": "arxiv",
    "version": 1
  }
}