Pith Number

pith:L563NSQV

pith:2015:L563NSQV2ZWCRMQSRI2M2OKCXX

not attested not anchored not stored refs pending

ALMA Observations of a Gap and a Ring in the Protoplanetary Disk around TW Hya

Catherine Walsh, Daiki Ishimoto, Hideko Nomura, Kazuhiro D. Kanagawa, Ryohei Kawabe, Satoshi Okuzumi, Shigeru Ida, Takashi Tsukagoshi, Takayuki Muto, T.J. Millar, Xue-Ning Bai

arxiv:1512.05440 v2 · 2015-12-17 · astro-ph.EP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{L563NSQV2ZWCRMQSRI2M2OKCXX}

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	2026-05-18T01:19:57.068089Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5f7db6ca15d66c28b2128a34cd3942bdcf9b98946db053b298d8893d1dfbc8ba

Aliases

arxiv: 1512.05440 · arxiv_version: 1512.05440v2 · doi: 10.48550/arxiv.1512.05440 · pith_short_12: L563NSQV2ZWC · pith_short_16: L563NSQV2ZWCRMQS · pith_short_8: L563NSQV

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/L563NSQV2ZWCRMQSRI2M2OKCXX \
  | 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: 5f7db6ca15d66c28b2128a34cd3942bdcf9b98946db053b298d8893d1dfbc8ba

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ccde9e0925eacc0385e6da0d677f3ba522007426820816f3dfb6b73cf1d49b54",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2015-12-17T02:15:02Z",
    "title_canon_sha256": "24c3ed612a29d8831273674b45d76c4fa287dc96dc058256fbafc00682e3c9f2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1512.05440",
    "kind": "arxiv",
    "version": 2
  }
}