Pith Number

pith:AM47SDYQ

pith:2020:AM47SDYQ2IY3Y3RDXQCSGOVVOC

not attested not anchored not stored refs pending

Population of hot subdwarf stars studied with Gaia III. Catalogue of known hot subdwarf stars: Data Release 2

S. Geier

arxiv:2002.10896 v1 · 2020-02-25 · 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{AM47SDYQ2IY3Y3RDXQCSGOVVOC}

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	2026-07-05T00:53:18.416856Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0339f90f10d231bc6e23bc05233ab570a6c97bbf810d5b8e23015f7805b1ce8f

Aliases

arxiv: 2002.10896 · arxiv_version: 2002.10896v1 · doi: 10.48550/arxiv.2002.10896 · pith_short_12: AM47SDYQ2IY3 · pith_short_16: AM47SDYQ2IY3Y3RD · pith_short_8: AM47SDYQ

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/AM47SDYQ2IY3Y3RDXQCSGOVVOC \
  | 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: 0339f90f10d231bc6e23bc05233ab570a6c97bbf810d5b8e23015f7805b1ce8f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4dd4eb9345614028d3e91aaca1801230d675c8543b17182ca6e0378ec4eb4a6b",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2020-02-25T14:36:22Z",
    "title_canon_sha256": "5a42104941f2ca00eaa2fe40f6dcf471651a7f35506ccb20f72291a2fc457e49"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2002.10896",
    "kind": "arxiv",
    "version": 1
  }
}