Pith Number

pith:GZSPOMXM

pith:2026:GZSPOMXMAYWJOX5H267J7PAOSK

not attested not anchored not stored refs pending

Spectral classification of brown dwarfs using machine learning

A.R. Callen, I.H. Bustos Fierro, M. G\'omez

arxiv:2605.20146 v1 · 2026-05-19 · astro-ph.SR · 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{GZSPOMXMAYWJOX5H267J7PAOSK}

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	2026-05-20T02:06:04.092737Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3664f732ec062c975fa7d7be9fbc0e92afb253ca1ce813218ea08f3b1c867ad7

Aliases

arxiv: 2605.20146 · arxiv_version: 2605.20146v1 · doi: 10.48550/arxiv.2605.20146 · pith_short_12: GZSPOMXMAYWJ · pith_short_16: GZSPOMXMAYWJOX5H · pith_short_8: GZSPOMXM

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/GZSPOMXMAYWJOX5H267J7PAOSK \
  | 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: 3664f732ec062c975fa7d7be9fbc0e92afb253ca1ce813218ea08f3b1c867ad7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fd646cc2687ad1fcb09e18283a1daf3565dea8877a016ef8a6f5691ed5be4589",
    "cross_cats_sorted": [
      "astro-ph.IM"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-sa/4.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2026-05-19T17:34:37Z",
    "title_canon_sha256": "b2ea2edbaaba1d6d9a48a42db53c5c057bb4c8d7e0f0089f438fc7ffef723057"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.20146",
    "kind": "arxiv",
    "version": 1
  }
}