Pith Number

pith:BN3IVCHR

pith:2018:BN3IVCHR5U72CHGTTGRM7NFAHT

not attested not anchored not stored refs pending

Calibrating Long Period Variables as Standard Candles with Machine Learning

Hy Trac, Markus Michael Rau, Rachel Mandelbaum, Sergey E. Koposov

arxiv:1806.02841 v2 · 2018-06-07 · astro-ph.IM · astro-ph.CO · 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{BN3IVCHR5U72CHGTTGRM7NFAHT}

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	2026-05-17T23:49:17.574676Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0b768a88f1ed3fa11cd399a2cfb4a03cdcc4e069b29f6c1ea479a9a461372e72

Aliases

arxiv: 1806.02841 · arxiv_version: 1806.02841v2 · doi: 10.48550/arxiv.1806.02841 · pith_short_12: BN3IVCHR5U72 · pith_short_16: BN3IVCHR5U72CHGT · pith_short_8: BN3IVCHR

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/BN3IVCHR5U72CHGTTGRM7NFAHT \
  | 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: 0b768a88f1ed3fa11cd399a2cfb4a03cdcc4e069b29f6c1ea479a9a461372e72

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "40599d2b08d13853d826a6dff6a486393da4c0c9783693802c44faeacf8b6113",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2018-06-07T18:00:13Z",
    "title_canon_sha256": "f42274b7cbc68fbe03986454bf6f64e923aaa329a59fc79c727139e4027162d0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1806.02841",
    "kind": "arxiv",
    "version": 2
  }
}