Pith Number

pith:56A66TAU

pith:2018:56A66TAUIPCOC7ZGXTQISAG4KR

not attested not anchored not stored refs pending

Double-Stage Delay Multiply and Sum Beamforming Algorithm: Application to Linear-Array Photoacoustic Imaging

Ali Mahloojifar, Mahdi Orooji, Moein Mozaffarzadeh, Mohammadreza Nasiriavanaki, Saba Adabi

arxiv:1801.07446 v1 · 2018-01-23 · eess.SP · cs.IT · math.IT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{56A66TAUIPCOC7ZGXTQISAG4KR}

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	2026-05-18T00:25:12.800227Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ef81ef4c1443c4e17f26bce08900dc545116afa3b5debea34d06b7b92476ee49

Aliases

arxiv: 1801.07446 · arxiv_version: 1801.07446v1 · doi: 10.48550/arxiv.1801.07446 · pith_short_12: 56A66TAUIPCO · pith_short_16: 56A66TAUIPCOC7ZG · pith_short_8: 56A66TAU

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/56A66TAUIPCOC7ZGXTQISAG4KR \
  | 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: ef81ef4c1443c4e17f26bce08900dc545116afa3b5debea34d06b7b92476ee49

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "46148a59a5b2f410a696bce7b8543e1e64ab15eab88b73a8b0454e87534d47c8",
    "cross_cats_sorted": [
      "cs.IT",
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "eess.SP",
    "submitted_at": "2018-01-23T09:20:43Z",
    "title_canon_sha256": "a9abf45f27804d419f09cb4a9445b95a1ad4d3f10157cf59f3df9a0dbf14c2ad"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1801.07446",
    "kind": "arxiv",
    "version": 1
  }
}