Pith Number

pith:FVB2YNKQ

pith:2021:FVB2YNKQEGJRNND3C644Z6W7YE

not attested not anchored not stored refs pending

The wide upper main sequence and main sequence turnoff of the ~ 800 Myr old star cluster NGC1831

Andrea Bellini, Leo Girardi, Matteo Correnti, Paul Goudfrooij

arxiv:2101.10751 v1 · 2021-01-26 · astro-ph.GA · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FVB2YNKQEGJRNND3C644Z6W7YE}

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	2026-07-05T02:12:16.947259Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2d43ac3550219316b47b17b9ccfadfc1347155dbe901ca9e844f00ebdee80b6a

Aliases

arxiv: 2101.10751 · arxiv_version: 2101.10751v1 · doi: 10.48550/arxiv.2101.10751 · pith_short_12: FVB2YNKQEGJR · pith_short_16: FVB2YNKQEGJRNND3 · pith_short_8: FVB2YNKQ

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/FVB2YNKQEGJRNND3C644Z6W7YE \
  | 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: 2d43ac3550219316b47b17b9ccfadfc1347155dbe901ca9e844f00ebdee80b6a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6b4f0cc120b0e5d3acf56aa290918ba1e7d554e079e48f9844d8bbf1e5a0ecaa",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2021-01-26T12:46:20Z",
    "title_canon_sha256": "9ff7a4445d3aa59b5c02224bea116e994637d20d6d453c7c6655cb64308653b3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2101.10751",
    "kind": "arxiv",
    "version": 1
  }
}