Pith Number

pith:H2OBUIQ7

pith:2019:H2OBUIQ7YT4FWEPACPQBPKUFBY

not attested not anchored not stored refs pending

Analog Beamforming for Active Imaging using Sparse Arrays

Robin Rajam\"aki, Sundeep Prabhakar Chepuri, Visa Koivunen

arxiv:1906.08970 v1 · 2019-06-21 · eess.SP

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{H2OBUIQ7YT4FWEPACPQBPKUFBY}

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	2026-05-17T23:42:47.210380Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3e9c1a221fc4f85b11e013e017aa850e2fe4c00e72749d8b0fefdba499b50baf

Aliases

arxiv: 1906.08970 · arxiv_version: 1906.08970v1 · doi: 10.48550/arxiv.1906.08970 · pith_short_12: H2OBUIQ7YT4F · pith_short_16: H2OBUIQ7YT4FWEPA · pith_short_8: H2OBUIQ7

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/H2OBUIQ7YT4FWEPACPQBPKUFBY \
  | 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: 3e9c1a221fc4f85b11e013e017aa850e2fe4c00e72749d8b0fefdba499b50baf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bebebe4524dc8508a9e999ea5769e24eedb1f11febd76a2b26c65c2b8d07dac4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "eess.SP",
    "submitted_at": "2019-06-21T06:23:50Z",
    "title_canon_sha256": "fdd3448a9cfb83eee215d6e3efeb3105a15bb7d7b8a06b97a315eb62891387dd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1906.08970",
    "kind": "arxiv",
    "version": 1
  }
}