Pith Number

pith:TGR4SBZW

pith:2022:TGR4SBZWY42YZCAGY6CLYMR4GT

not attested not anchored not stored refs pending

Two Rings and a Marginally Resolved, 5 AU, Disk Around LkCa 15 Identified Via Near Infrared Sparse Aperture Masking Interferometry

Anand Sivaramakrishnan, Anthony Cheetham, Anthony Soulain, Arthur Vigan, Dori Blakely, Doug Johnstone, Faustine Cantalloube, Joel Sanchez-Bermudez, Logan Francis, Nienke van der Marel, Peter Tuthill, Rachel Cooper, Ruobing Dong

arxiv:2204.07055 v1 · 2022-04-14 · astro-ph.EP · astro-ph.IM · 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{TGR4SBZWY42YZCAGY6CLYMR4GT}

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	2026-07-05T04:26:01.614190Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

99a3c90736c7358c8806c784bc323c34f655fcfda6be4cccc535f5c1409b9a61

Aliases

arxiv: 2204.07055 · arxiv_version: 2204.07055v1 · doi: 10.48550/arxiv.2204.07055 · pith_short_12: TGR4SBZWY42Y · pith_short_16: TGR4SBZWY42YZCAG · pith_short_8: TGR4SBZW

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/TGR4SBZWY42YZCAGY6CLYMR4GT \
  | 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: 99a3c90736c7358c8806c784bc323c34f655fcfda6be4cccc535f5c1409b9a61

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6617f4ae3b5af349519949ef39828d39f0764c6a0f23b0a7caa6ef079b30ff09",
    "cross_cats_sorted": [
      "astro-ph.IM",
      "astro-ph.SR"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2022-04-14T15:57:10Z",
    "title_canon_sha256": "92a4861d2258151b92fc91dc3cf943338e626a6b389752c5c2401be59ea05bd0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2204.07055",
    "kind": "arxiv",
    "version": 1
  }
}