Pith Number

pith:Q27H4HW2

pith:2015:Q27H4HW27OPK7YL5M236UGYVPT

not attested not anchored not stored refs pending

A constrained variable projection reconstruction method for photoacoustic computed tomography without accurate knowledge of transducer responses

Jun Xia, Kun Wang, Lihong V. Wang, Liren Zhu, Mark A. Anastasio, Qiwei Sheng, Thomas P. Matthews

arxiv:1505.07426 v1 · 2015-05-27 · physics.med-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{Q27H4HW27OPK7YL5M236UGYVPT}

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	2026-05-18T00:59:01.820338Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

86be7e1edafb9eafe17d66b7ea1b157ce68e1c291d74f78db6d21f1e84018434

Aliases

arxiv: 1505.07426 · arxiv_version: 1505.07426v1 · doi: 10.48550/arxiv.1505.07426 · pith_short_12: Q27H4HW27OPK · pith_short_16: Q27H4HW27OPK7YL5 · pith_short_8: Q27H4HW2

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/Q27H4HW27OPK7YL5M236UGYVPT \
  | 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: 86be7e1edafb9eafe17d66b7ea1b157ce68e1c291d74f78db6d21f1e84018434

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f4840afe1f8ff19f6acc9aa8aea9f8af1915e11790488ea6ad59c542ba1cf637",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.med-ph",
    "submitted_at": "2015-05-27T18:16:03Z",
    "title_canon_sha256": "d8b1547fcf6ac29ffde49e82a561030faa3fb343fcb1f0abb8e2610b5fce53a2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1505.07426",
    "kind": "arxiv",
    "version": 1
  }
}