Pith Number

pith:E54CAGSU

pith:2019:E54CAGSUL7MKBWLJ3CV5ABWL2M

not attested not anchored not stored refs pending

Model for a Noise Matched Phased Array Feed

2), 2. National Radio Astronomy Observatory, Arecibo, Arecibo Observatory, Charlottesville), D. Anish Roshi (1, Ionosphere Center, J. Richard Fisher (2) (1. National Astronomy, W. Shillue (2)

arxiv:1902.01515 v2 · 2019-02-05 · 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{E54CAGSUL7MKBWLJ3CV5ABWL2M}

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	2026-05-17T23:54:38.627692Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2778201a545fd8a0d969d8abd006cbd33a4ac898d47e8f4c95fbdcb62bddd335

Aliases

arxiv: 1902.01515 · arxiv_version: 1902.01515v2 · doi: 10.48550/arxiv.1902.01515 · pith_short_12: E54CAGSUL7MK · pith_short_16: E54CAGSUL7MKBWLJ · pith_short_8: E54CAGSU

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/E54CAGSUL7MKBWLJ3CV5ABWL2M \
  | 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: 2778201a545fd8a0d969d8abd006cbd33a4ac898d47e8f4c95fbdcb62bddd335

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0eb3c61458417f4b01bf465ba44003839c0ee550ebaacbdd9e21eed0424289af",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2019-02-05T01:51:11Z",
    "title_canon_sha256": "a400d49f81d3baa594a9f32113f579da6380e80b4655f1b3602287e3a48ca4e8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.01515",
    "kind": "arxiv",
    "version": 2
  }
}