Pith Number

pith:EFAILNGB

pith:2015:EFAILNGBALVQ3ECYMQRCPVTVWN

not attested not anchored not stored refs pending

A fast marching method based back projection algorithm for photoacoustic tomography in heterogeneous media

Tianren Wang, Yun Jing

arxiv:1501.03869 v2 · 2015-01-16 · 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{EFAILNGBALVQ3ECYMQRCPVTVWN}

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	2026-05-18T02:29:08.070403Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

214085b4c102eb0d9058642227d675b355a850b5631a8787764571052772e090

Aliases

arxiv: 1501.03869 · arxiv_version: 1501.03869v2 · doi: 10.48550/arxiv.1501.03869 · pith_short_12: EFAILNGBALVQ · pith_short_16: EFAILNGBALVQ3ECY · pith_short_8: EFAILNGB

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/EFAILNGBALVQ3ECYMQRCPVTVWN \
  | 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: 214085b4c102eb0d9058642227d675b355a850b5631a8787764571052772e090

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9a26c31fc43aebf6e117176784595b849b462eecd6cd2155ae5261dce42f7cab",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.med-ph",
    "submitted_at": "2015-01-16T03:17:40Z",
    "title_canon_sha256": "daf1bef39563cc59cf593b433fcc59c6ec456243411204d80e8cd70e6453ae4f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1501.03869",
    "kind": "arxiv",
    "version": 2
  }
}