Pith Number

pith:DXH3R7D2

pith:2019:DXH3R7D2DU7H76AJWLKKRZ6HEX

not attested not anchored not stored refs pending

Snapshot projection optical tomography

Yongjin Sung

arxiv:1906.04720 v2 · 2019-06-11 · physics.optics · eess.IV · physics.bio-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{DXH3R7D2DU7H76AJWLKKRZ6HEX}

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	2026-07-05T01:05:35.081003Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1dcfb8fc7a1d3e7ff809b2d4a8e7c725cd9cd8cd58203fbffa08ded4b0eda508

Aliases

arxiv: 1906.04720 · arxiv_version: 1906.04720v2 · doi: 10.48550/arxiv.1906.04720 · pith_short_12: DXH3R7D2DU7H · pith_short_16: DXH3R7D2DU7H76AJ · pith_short_8: DXH3R7D2

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/DXH3R7D2DU7H76AJWLKKRZ6HEX \
  | 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: 1dcfb8fc7a1d3e7ff809b2d4a8e7c725cd9cd8cd58203fbffa08ded4b0eda508

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8e5456faff48dd932b35aa7020ae568558429acb14bf65a9899298ff167c1fae",
    "cross_cats_sorted": [
      "eess.IV",
      "physics.bio-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2019-06-11T17:46:59Z",
    "title_canon_sha256": "0686bc17641b161d6b14797baa54d778286f7cae888f985fa12d7f8e5c6da9af"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1906.04720",
    "kind": "arxiv",
    "version": 2
  }
}