Pith Number

pith:IGLKUELW

pith:2008:IGLKUELWTKGVMM7XI32VF7ERCM

not attested not anchored not stored refs pending

Confirmation of a gapped primordial disk around LkCa 15

Catherine Espaillat, James Muzerolle, Kevin L. Luhman, Nuria Calvet, Paola D'Alessio

arxiv:0807.2291 v1 · 2008-07-15 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IGLKUELWTKGVMM7XI32VF7ERCM}

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	2026-05-18T02:35:15.548132Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4196aa11769a8d5633f746f552fc91133418676eedfd1bc4bfd6d6d9cdb25ede

Aliases

arxiv: 0807.2291 · arxiv_version: 0807.2291v1 · doi: 10.48550/arxiv.0807.2291 · pith_short_12: IGLKUELWTKGV · pith_short_16: IGLKUELWTKGVMM7X · pith_short_8: IGLKUELW

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/IGLKUELWTKGVMM7XI32VF7ERCM \
  | 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: 4196aa11769a8d5633f746f552fc91133418676eedfd1bc4bfd6d6d9cdb25ede

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "77b15aa023d48bd6794f1a533c8c12042a747967f6601b43ffa2f779af190ed8",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-07-15T02:47:03Z",
    "title_canon_sha256": "d93bb66c24e8d7dccbe71f4c59e816573de67158f7c2cc73912dcf38fb3397c3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0807.2291",
    "kind": "arxiv",
    "version": 1
  }
}