Pith Number

pith:DQSQKJFL

pith:2019:DQSQKJFLW5PLWPRFINWFXTC2HD

not attested not anchored not stored refs pending

A Model for Phased Array Feed

Charlottesville, D. Anish Roshi (1), J. Richard Fisher (1)(1. National Radio Astronomy Observatory, USA)

arxiv:1902.01516 v1 · 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{DQSQKJFLW5PLWPRFINWFXTC2HD}

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	2026-05-17T23:54:47.455922Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1c250524abb75ebb3e25436c5bcc5a38c3abc0bc9a0182826244e81d1d8c93b3

Aliases

arxiv: 1902.01516 · arxiv_version: 1902.01516v1 · doi: 10.48550/arxiv.1902.01516 · pith_short_12: DQSQKJFLW5PL · pith_short_16: DQSQKJFLW5PLWPRF · pith_short_8: DQSQKJFL

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/DQSQKJFLW5PLWPRFINWFXTC2HD \
  | 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: 1c250524abb75ebb3e25436c5bcc5a38c3abc0bc9a0182826244e81d1d8c93b3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ff5a90278eab6e00aa986effe82ca0937ab0c430d6032d37c69d7254f6a69bfb",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2019-02-05T01:52:02Z",
    "title_canon_sha256": "7577ca3bcf910b2819102046bda5dcc7b00f0f3ebe6db0a675b37c7bc529a4b8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.01516",
    "kind": "arxiv",
    "version": 1
  }
}