Pith Number

pith:DFBW36WA

pith:2022:DFBW36WA2GXDP6AVXWYK2XZLXF

not attested not anchored not stored refs pending

A machine-learning photometric classifier for massive stars in nearby galaxies I. The method

Alceste Z. Bonanos, Frank Tramper, Grigoris Maravelias, Ming Yang, Paolo Bonfini, Stephan de Wit

arxiv:2203.08125 v2 · 2022-03-15 · astro-ph.SR · astro-ph.GA · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DFBW36WA2GXDP6AVXWYK2XZLXF}

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	2026-07-05T05:07:40.386948Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

19436dfac0d1ae37f815bdb0ad5f2bb94748e992d70dc7cb6b366c7aa86c965e

Aliases

arxiv: 2203.08125 · arxiv_version: 2203.08125v2 · doi: 10.48550/arxiv.2203.08125 · pith_short_12: DFBW36WA2GXD · pith_short_16: DFBW36WA2GXDP6AV · pith_short_8: DFBW36WA

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/DFBW36WA2GXDP6AVXWYK2XZLXF \
  | 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: 19436dfac0d1ae37f815bdb0ad5f2bb94748e992d70dc7cb6b366c7aa86c965e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ed94f6995f4e4f93cd625b8380914a0248ac408b75dd446f50db164cd3c070d8",
    "cross_cats_sorted": [
      "astro-ph.GA",
      "astro-ph.IM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2022-03-15T17:53:00Z",
    "title_canon_sha256": "b2eeed953ff40f6e1069ae9ed4a23d090e30cb9f8f06160bf0f46067b4246862"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2203.08125",
    "kind": "arxiv",
    "version": 2
  }
}