Pith Number

pith:WAH3QC4U

pith:2017:WAH3QC4UWQIDAHPRC4JP7YNH6S

not attested not anchored not stored refs pending

The optical+infrared L dwarf spectral sequence of young planetary-mass objects in the Upper Scorpius association

2), (2) University of La Laguna, (3) CAB CSIC-INTA, (4) Universidad de Antofagasta, Chile), K. Pena Ramirez (4) ((1) IAC, Madrid, M. R. Zapatero Osorio (3), N. Lodieu (1, Spain, Tenerife, V. J. S. Bejar (1

arxiv:1709.02139 v1 · 2017-09-07 · astro-ph.SR · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WAH3QC4UWQIDAHPRC4JP7YNH6S}

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	2026-05-18T00:30:41.529907Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b00fb80b94b410301df11712ffe1a7f4bb2d4fbab3372b1f5d83773aa496ee22

Aliases

arxiv: 1709.02139 · arxiv_version: 1709.02139v1 · doi: 10.48550/arxiv.1709.02139 · pith_short_12: WAH3QC4UWQID · pith_short_16: WAH3QC4UWQIDAHPR · pith_short_8: WAH3QC4U

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/WAH3QC4UWQIDAHPRC4JP7YNH6S \
  | 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: b00fb80b94b410301df11712ffe1a7f4bb2d4fbab3372b1f5d83773aa496ee22

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4f24a1f3aee1eb8cd90ad5cdc2f882276edf2ef1b15e50fd130acb033ede1d14",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2017-09-07T08:49:12Z",
    "title_canon_sha256": "a7353ae0f57d906e25adc7fb9c51eca0932ae22bc383ccca768f29e9331e2942"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1709.02139",
    "kind": "arxiv",
    "version": 1
  }
}