Pith Number

pith:226FR3EE

pith:2021:226FR3EECUJNMAUSJJ7OUYTVU7

not attested not anchored not stored refs pending

An Automatic Approach for Generating Rich, Linked Geo-Metadata from Historical Map Images

Basel Shbita, Craig A. Knoblock, Johannes H. Uhl, Sasan Tavakkol, Stefan Leyk, Yao-Yi Chiang, Zekun Li

arxiv:2112.01671 v1 · 2021-12-03 · cs.AI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{226FR3EECUJNMAUSJJ7OUYTVU7}

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	2026-07-05T03:37:30.611481Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d6bc58ec841512d602924a7eea6275a7ec36215fbe85753d935b134239291989

Aliases

arxiv: 2112.01671 · arxiv_version: 2112.01671v1 · doi: 10.48550/arxiv.2112.01671 · pith_short_12: 226FR3EECUJN · pith_short_16: 226FR3EECUJNMAUS · pith_short_8: 226FR3EE

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/226FR3EECUJNMAUSJJ7OUYTVU7 \
  | 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: d6bc58ec841512d602924a7eea6275a7ec36215fbe85753d935b134239291989

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cbabf9453e45d0f50205c9c064c281df289b5c3d5b4ac680bd0d3315abe9cb1b",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.AI",
    "submitted_at": "2021-12-03T01:44:38Z",
    "title_canon_sha256": "64548e578d8d4dd26070d99c3cc6f82d277503f07d893db511c464cb81e8c6ff"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2112.01671",
    "kind": "arxiv",
    "version": 1
  }
}