Pith Number

pith:ER52EHBZ

pith:2019:ER52EHBZV43LKOAQG6K36IVM5L

not attested not anchored not stored refs pending

High-Contrast Testbeds for Future Space-Based Direct Imaging Exoplanet Missions

Aki Roberge, Bertrand Mennesson, Brendan Crill, Camilo Mejia Prada, Chris Stark, Dan Sirbu, Dimitri Mawet, Eugene Serabyn, Garreth Ruane, Jeremy Kasdin, Johan Mazoyer, John Trauger, Jorge Llop Sayson, Kevin Fogarty, Laurent Pueyo, Lucie Leboulleux, Mamadou N'Diaye, Marshall Perrin, Neil Zimmerman, Nicholas Siegler, Olivier Guyon, Pierre Baudoz, Raphael Galicher, Remi Soummer, Roser Juanola-Parramon, Ruslan Belikov, Stuart Shaklan, Tyler Groff

arxiv:1907.09508 v1 · 2019-07-22 · astro-ph.IM · 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{ER52EHBZV43LKOAQG6K36IVM5L}

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	2026-05-17T23:39:53.079146Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

247ba21c39af36b538103795bf22aceaf819e3180f73c694f81e97c80f7621fb

Aliases

arxiv: 1907.09508 · arxiv_version: 1907.09508v1 · doi: 10.48550/arxiv.1907.09508 · pith_short_12: ER52EHBZV43L · pith_short_16: ER52EHBZV43LKOAQ · pith_short_8: ER52EHBZ

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/ER52EHBZV43LKOAQG6K36IVM5L \
  | 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: 247ba21c39af36b538103795bf22aceaf819e3180f73c694f81e97c80f7621fb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3f4faca1bf2cb9012dab035b72786f0c2bfcef15715f69b34e883509ca906237",
    "cross_cats_sorted": [
      "astro-ph.EP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2019-07-22T18:13:17Z",
    "title_canon_sha256": "c37ff5375407da2e68cbecbef38a968e962d8508545dc0a9323c85c9cd4a5060"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1907.09508",
    "kind": "arxiv",
    "version": 1
  }
}