Pith Number

pith:FFODOW2O

pith:2018:FFODOW2OEJKKHWZWC3JVAYOY7U

not attested not anchored not stored refs pending

From FATS to feets: Further improvements to an astronomical feature extraction tool based on machine learning

B. S\'anchez, F. Ramos, J. B. Cabral, J. Vanderplas, P. Granitto, S. Gurovich

arxiv:1809.02154 v1 · 2018-09-06 · astro-ph.IM · cs.LG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FFODOW2OEJKKHWZWC3JVAYOY7U}

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	2026-05-18T00:06:17.822080Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

295c375b4e2254a3db3616d35061d8fd30e46142309c8c9856b00b2be6a8c53d

Aliases

arxiv: 1809.02154 · arxiv_version: 1809.02154v1 · doi: 10.48550/arxiv.1809.02154 · pith_short_12: FFODOW2OEJKK · pith_short_16: FFODOW2OEJKKHWZW · pith_short_8: FFODOW2O

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/FFODOW2OEJKKHWZWC3JVAYOY7U \
  | 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: 295c375b4e2254a3db3616d35061d8fd30e46142309c8c9856b00b2be6a8c53d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4a35764304a062403f5128e4f2046c49a943e6736f006cf9264bdd22b0d1eb92",
    "cross_cats_sorted": [
      "cs.LG"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2018-09-06T18:23:36Z",
    "title_canon_sha256": "8325f4b3f2befdc4c859f5b36755f369d9b3f76d2111e74724fc5649fb0f6456"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1809.02154",
    "kind": "arxiv",
    "version": 1
  }
}