Pith Number

pith:V34VUDB2

pith:2019:V34VUDB25K432I7Z6HGVP4C74C

not attested not anchored not stored refs pending

Diffuse optical tomography by simulated annealing via a spin Hamiltonian

Manabu Machida, Norikazu Todoroki, Yu Jiang

arxiv:1912.11375 v2 · 2019-12-24 · math.NA · cs.NA · physics.optics

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{V34VUDB25K432I7Z6HGVP4C74C}

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	2026-07-05T02:46:07.893760Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

aef95a0c3aeab9bd23f9f1cd57f05fe09cc3b545df753bc5e7ecc12c3566aae2

Aliases

arxiv: 1912.11375 · arxiv_version: 1912.11375v2 · doi: 10.48550/arxiv.1912.11375 · pith_short_12: V34VUDB25K43 · pith_short_16: V34VUDB25K432I7Z · pith_short_8: V34VUDB2

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/V34VUDB25K432I7Z6HGVP4C74C \
  | 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: aef95a0c3aeab9bd23f9f1cd57f05fe09cc3b545df753bc5e7ecc12c3566aae2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cbcb9982b1eb1bc7e17466a965149014e693abd3e0f7ef66f6c9cbee2dbd59c6",
    "cross_cats_sorted": [
      "cs.NA",
      "physics.optics"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2019-12-24T14:19:41Z",
    "title_canon_sha256": "2e57a148eb15d1eb682021ef5f9cfa57457adbb7efb8ec954331029ae6488732"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1912.11375",
    "kind": "arxiv",
    "version": 2
  }
}