Pith Number

pith:3BV4KIAF

pith:2023:3BV4KIAFU43CA4ZMMK5Z2OAAL5

not attested not anchored not stored refs pending

Efficient OCR for Building a Diverse Digital History

Jacob Carlson, Melissa Dell, Tom Bryan

arxiv:2304.02737 v2 · 2023-04-05 · cs.CV · cs.DL · econ.GN · q-fin.EC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{3BV4KIAFU43CA4ZMMK5Z2OAAL5}

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	2026-07-05T08:48:38.362396Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d86bc52005a73620732c62bb9d38005f579ebd800e6abc7bfc6eded4b60e3183

Aliases

arxiv: 2304.02737 · arxiv_version: 2304.02737v2 · doi: 10.48550/arxiv.2304.02737 · pith_short_12: 3BV4KIAFU43C · pith_short_16: 3BV4KIAFU43CA4ZM · pith_short_8: 3BV4KIAF

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/3BV4KIAFU43CA4ZMMK5Z2OAAL5 \
  | 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: d86bc52005a73620732c62bb9d38005f579ebd800e6abc7bfc6eded4b60e3183

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bc0b5223b54992975d23191bced18d49d9eebb6630c3cf1d88722d61896ec704",
    "cross_cats_sorted": [
      "cs.DL",
      "econ.GN",
      "q-fin.EC"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2023-04-05T20:36:04Z",
    "title_canon_sha256": "7ae60ceae6c549c710562f35842546e14aa1ee4c231b6eef1c1e2ca50dea4d30"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2304.02737",
    "kind": "arxiv",
    "version": 2
  }
}