Pith Number

pith:4PPNQ6MQ

pith:2019:4PPNQ6MQKAPHWFA3CFI4RAQ2LT

not attested not anchored not stored refs pending

The Gaia Ultra-Cool Dwarf Sample -- II: Structure at the end of the main sequence

D. Barrado, F. Marocco, H. R. A. Jones, J. A. Caballero, J. C. Beamin, L. M. Sarro, R. L. Smart

arxiv:1902.07571 v1 · 2019-02-20 · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4PPNQ6MQKAPHWFA3CFI4RAQ2LT}

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	2026-05-17T23:50:55.563952Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e3ded87990501e7b141b1151c8821a5ce5a26daafd55033bbd929c0eea2c9f87

Aliases

arxiv: 1902.07571 · arxiv_version: 1902.07571v1 · doi: 10.48550/arxiv.1902.07571 · pith_short_12: 4PPNQ6MQKAPH · pith_short_16: 4PPNQ6MQKAPHWFA3 · pith_short_8: 4PPNQ6MQ

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/4PPNQ6MQKAPHWFA3CFI4RAQ2LT \
  | 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: e3ded87990501e7b141b1151c8821a5ce5a26daafd55033bbd929c0eea2c9f87

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e060696b5c3d4ba46aaff606932a7551cfb20b1ca53b7c6e9ccfa811fb170b10",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2019-02-20T14:21:57Z",
    "title_canon_sha256": "ab93568013b31ea70cfb3ac469806fc3dc158ca32b9f6a4cef5131a64d10defb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.07571",
    "kind": "arxiv",
    "version": 1
  }
}