Pith Number

pith:NPBSPUPS

pith:2023:NPBSPUPS6UZSSTY36YT3HPQAPD

not attested not anchored not stored refs pending

An Astronomers Guide to Machine Learning

Sara A. Webb, Simon R. Goode

arxiv:2304.00512 v1 · 2023-04-02 · 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{NPBSPUPS6UZSSTY36YT3HPQAPD}

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	2026-07-05T11:48:44.486104Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6bc327d1f2f533294f1bf627b3be0078d92c9069040ad97d45e09d6df042e423

Aliases

arxiv: 2304.00512 · arxiv_version: 2304.00512v1 · doi: 10.48550/arxiv.2304.00512 · pith_short_12: NPBSPUPS6UZS · pith_short_16: NPBSPUPS6UZSSTY3 · pith_short_8: NPBSPUPS

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/NPBSPUPS6UZSSTY36YT3HPQAPD \
  | 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: 6bc327d1f2f533294f1bf627b3be0078d92c9069040ad97d45e09d6df042e423

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "33d90a10348997aee198269309383c7cc9ee37439944af81c03b77cd16dcf2fc",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2023-04-02T11:03:48Z",
    "title_canon_sha256": "a12d9e365594bc918b2acd1c86b8fea9feaad0c851068c3116b785b98db5e4e6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2304.00512",
    "kind": "arxiv",
    "version": 1
  }
}