Pith Number

pith:Y4SITLMC

pith:2019:Y4SITLMCI3KOR6MGZBEQQUMTJP

not attested not anchored not stored refs pending

Performance of the Gemini Planet Imager Non-Redundant Mask and spectroscopy of two close-separation binaries HR 2690 and HD 142527

Abhijith Rajan, Adam C. Schneider, Alexandra Z. Greenbaum, Anand Sivaramakrishnan, Andrew Cardwell, Anthony Cheetham, Benjamin L. Gerard, Bruce Macintosh, Christian Marois, David Palmer, Dmitry Savransky, Eric L. Nielsen, Franck Marchis, Fredrik T. Rantakyr\"o, Gaspard Duch\^ene, Inseok Song, James E. Larkin, James R. Graham, Jason J. Wang, Jeffrey Chilcote, Jennifer Patience, J\'er\^ome Maire, J. Kent Wallace, Joanna Bulger, Julien Rameau, Katherine B. Follette, Katie M. Morzinski, Kimberly Ward-Duong, Laurent Pueyo, Lisa Poyneer, Li-Wei Hung, Mark S. Marley, Marshall Perrin, Maxwell A. Millar-Blanchaer, Michael P. Fitzgerald, Naru Sadakuni, Pascale Hibon, Patrick Ingraham, Paul Kalas, Peter Tuthill, Quinn Konopacky, Rebecca Oppenheimer, Remi Soummer, Rene Doyon, Robert J. De Rosa, Sandrine Thomas, Schuyler Wolff, Sloane Wiktorowicz, S. Mark Ammons, Stanimir Metchev, Stephen J. Goodsell, Tara Cotten, Travis Barman, Vanessa P. Bailey

arxiv:1904.09006 v1 · 2019-04-18 · 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{Y4SITLMCI3KOR6MGZBEQQUMTJP}

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	2026-05-17T23:40:32.507383Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c72489ad8246d4e8f986c8490851934bd2578e4a63ef21dce3c21aaae7f14dbf

Aliases

arxiv: 1904.09006 · arxiv_version: 1904.09006v1 · doi: 10.48550/arxiv.1904.09006 · pith_short_12: Y4SITLMCI3KO · pith_short_16: Y4SITLMCI3KOR6MG · pith_short_8: Y4SITLMC

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/Y4SITLMCI3KOR6MGZBEQQUMTJP \
  | 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: c72489ad8246d4e8f986c8490851934bd2578e4a63ef21dce3c21aaae7f14dbf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "72502675fa9af203053fe07b5edaa42636395ef20e67daf386f116be38b97b22",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2019-04-18T20:35:16Z",
    "title_canon_sha256": "9bdd652360b8c0bb0a30d0111db6dd3064270ef773f47835c928fc2ca8369e70"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.09006",
    "kind": "arxiv",
    "version": 1
  }
}