Pith Number

pith:Q5VYO6YO

pith:2021:Q5VYO6YOPLDZRHH6VIPEAG5QFG

not attested not anchored not stored refs pending

White dwarf and subdwarf stars in the Sloan Digital Sky Survey Data Release 16

Alejandra D Romero, Detlev Koester, Gustavo Ourique, Ingrid Pelisoli, S. O. Kepler

arxiv:2108.10915 v1 · 2021-08-24 · 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{Q5VYO6YOPLDZRHH6VIPEAG5QFG}

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	2026-07-05T03:08:47.520664Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

876b877b0e7ac7989cfeaa1e401bb029823bc2ae85e1e722b17904fb51c764a1

Aliases

arxiv: 2108.10915 · arxiv_version: 2108.10915v1 · doi: 10.48550/arxiv.2108.10915 · pith_short_12: Q5VYO6YOPLDZ · pith_short_16: Q5VYO6YOPLDZRHH6 · pith_short_8: Q5VYO6YO

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/Q5VYO6YOPLDZRHH6VIPEAG5QFG \
  | 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: 876b877b0e7ac7989cfeaa1e401bb029823bc2ae85e1e722b17904fb51c764a1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fbfd061c76b202f8da5e6723a6bd03966d2bb01058bb13c690f9024d5385cde7",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2021-08-24T18:51:21Z",
    "title_canon_sha256": "0a116c9161485b6110751818adab08eabf2e4ca0590dc95a88f9a3031aced9e3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2108.10915",
    "kind": "arxiv",
    "version": 1
  }
}