Pith Number

pith:FD3MPUFZ

pith:2020:FD3MPUFZ5W7A3GPSDSATORHE5K

not attested not anchored not stored refs pending

Recommendations for optimizing rapid ultraviolet HST observations of gravitational wave optical counterparts

Annalisa Calamida, Armin Rest, Lou Strolger, Neill Reid, Ori Fox, Russell Ryan

arxiv:2002.09392 v1 · 2020-02-21 · 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{FD3MPUFZ5W7A3GPSDSATORHE5K}

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	2026-07-05T00:42:55.662478Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

28f6c7d0b9edbe0d99f21c813744e4ea880e003bb504b367e217614948f62d46

Aliases

arxiv: 2002.09392 · arxiv_version: 2002.09392v1 · doi: 10.48550/arxiv.2002.09392 · pith_short_12: FD3MPUFZ5W7A · pith_short_16: FD3MPUFZ5W7A3GPS · pith_short_8: FD3MPUFZ

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/FD3MPUFZ5W7A3GPSDSATORHE5K \
  | 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: 28f6c7d0b9edbe0d99f21c813744e4ea880e003bb504b367e217614948f62d46

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d4bb4539676e9ad8d2961d1f4a79b1fe2dfd2314fb7710ebb15badaf152bc118",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2020-02-21T16:21:38Z",
    "title_canon_sha256": "0e894ff78b35458a900528065d3b8edac7156bf324a330a886590b3f0479f1f1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2002.09392",
    "kind": "arxiv",
    "version": 1
  }
}