Pith Number

pith:OVJ27DVD

pith:2018:OVJ27DVDR7PDVNL5HV72MOTA7T

not attested not anchored not stored refs pending

Spectral feature extraction for DB white dwarfs through machine learning applied to new discoveries in the SDSS DR12 and DR14

A-Li Luo, Jing-Kun Zhao, Xiang-Ru Li, Xiao Kong, Yin-Bi Li, You-Fen Wang

arxiv:1806.08473 v1 · 2018-06-22 · 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{OVJ27DVDR7PDVNL5HV72MOTA7T}

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	2026-05-18T00:11:04.366664Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7553af8ea38fde3ab57d3d7fa63a60fcc49d66d6559f910281785c458d1430a6

Aliases

arxiv: 1806.08473 · arxiv_version: 1806.08473v1 · doi: 10.48550/arxiv.1806.08473 · pith_short_12: OVJ27DVDR7PD · pith_short_16: OVJ27DVDR7PDVNL5 · pith_short_8: OVJ27DVD

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/OVJ27DVDR7PDVNL5HV72MOTA7T \
  | 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: 7553af8ea38fde3ab57d3d7fa63a60fcc49d66d6559f910281785c458d1430a6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a1d4954a021cd3db7d1e62161d50df97fe3e6d656c76456b3f75b998f92b1cc6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2018-06-22T02:54:22Z",
    "title_canon_sha256": "eceb2f6db0a67610df3b99b1bf054cacf951548f1d458590aa84c0acecaf99f8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1806.08473",
    "kind": "arxiv",
    "version": 1
  }
}