Pith Number

pith:566JRT52

pith:2021:566JRT52RSBYZKEI75OMGHLFWQ

not attested not anchored not stored refs pending

Observational demonstration of a low-cost fast Fourier transform spectrometer with a delay-line-based ramp-compare ADC implemented on FPGA

Atsushi Nishimura, Hideo Ogawa, Hiroyuki Maezawa, Shinji Fujita, Takeru Matsumoto, Teppei Yonetsu, Toshikazu Onishi, Yuka Nakao

arxiv:2104.00252 v1 · 2021-04-01 · 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{566JRT52RSBYZKEI75OMGHLFWQ}

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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	2026-07-05T02:39:17.349469Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

efbc98cfba8c838ca888ff5cc31d65b432060233e4d7ba817d6e58fce6b6374f

Aliases

arxiv: 2104.00252 · arxiv_version: 2104.00252v1 · doi: 10.48550/arxiv.2104.00252 · pith_short_12: 566JRT52RSBY · pith_short_16: 566JRT52RSBYZKEI · pith_short_8: 566JRT52

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/566JRT52RSBYZKEI75OMGHLFWQ \
  | 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: efbc98cfba8c838ca888ff5cc31d65b432060233e4d7ba817d6e58fce6b6374f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4cca983eaaab70da612a717683ddfc23f1b8274ea17b8a643c53020ace4f3796",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2021-04-01T04:40:15Z",
    "title_canon_sha256": "9ec1298410e2507c824bbca5e14dd8f2010c9703914b8e1ffdf993b40cdabc3c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2104.00252",
    "kind": "arxiv",
    "version": 1
  }
}