Pith Number

pith:7AL6KE76

pith:2019:7AL6KE76VOGA5SD56AOQ2QAB67

not attested not anchored not stored refs pending

Lessons for WFIRST CGI from ground-based high-contrast systems

Anne-Marie Lagrange, Arthur Vigan, Brian Kern, Bruce Macintosh, Christian Marois, Elodie Choquet, Eric Cady, Eric L. Nielsen, Faustine Cantalloube, Garreth Ruane, Henry Ngo, Jared R. Males, Jason J. Wang, Jason Rhodes, Jeffrey Chilcote, John Krist, Jozua de Boer, Julien H Girard, Julien Milli, Mamadou N'Diaye, Maxwell A. Millar-Blanchaer, Michael Bottom, Olivier Guyon, Robert J. De Rosa, Rob G. van Holstein, Tiffany Meshkat, Tyler Groff, Vanessa P. Bailey, Wenhao Jerry Xuan

arxiv:1901.04049 v1 · 2019-01-13 · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7AL6KE76VOGA5SD56AOQ2QAB67}

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	2026-05-17T23:56:26.411787Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f817e513feab8c0ec87df01d0d4001f7ff3130a1344b957335e78ac525d53b09

Aliases

arxiv: 1901.04049 · arxiv_version: 1901.04049v1 · doi: 10.48550/arxiv.1901.04049 · pith_short_12: 7AL6KE76VOGA · pith_short_16: 7AL6KE76VOGA5SD5 · pith_short_8: 7AL6KE76

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/7AL6KE76VOGA5SD56AOQ2QAB67 \
  | 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: f817e513feab8c0ec87df01d0d4001f7ff3130a1344b957335e78ac525d53b09

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1996c38c2f0306036749744ce18b38b1a820ce7b2467d52685d8c94e21d87394",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2019-01-13T19:56:09Z",
    "title_canon_sha256": "db73e12976cd92ad166c8963fdc68c8056afaceebdbd6e4af9b9f2dce33b7a75"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.04049",
    "kind": "arxiv",
    "version": 1
  }
}