Pith Number

pith:DOIQK4GE

pith:2021:DOIQK4GELUG3CE4LTBNBIXCWRJ

not attested not anchored not stored refs pending

A hierarchical deep learning framework for the consistent classification of land use objects in geospatial databases

Christian Heipke, Chun Yang, Franz Rottensteiner

arxiv:2104.06991 v1 · 2021-04-14 · cs.CV

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DOIQK4GELUG3CE4LTBNBIXCWRJ}

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	2026-07-05T02:32:11.715976Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1b910570c45d0db1138b985a145c568a5711397384892d9f2832d5decfe41c67

Aliases

arxiv: 2104.06991 · arxiv_version: 2104.06991v1 · doi: 10.48550/arxiv.2104.06991 · pith_short_12: DOIQK4GELUG3 · pith_short_16: DOIQK4GELUG3CE4L · pith_short_8: DOIQK4GE

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/DOIQK4GELUG3CE4LTBNBIXCWRJ \
  | 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: 1b910570c45d0db1138b985a145c568a5711397384892d9f2832d5decfe41c67

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "915b308c65512a61ec253ce4d588a5d98ddd0749f1d627b5e903f6dceaccc604",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2021-04-14T17:16:35Z",
    "title_canon_sha256": "c690dfe87e832933ed84a647647e16ffa6b5321015275ff787b8a5dd1b362595"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2104.06991",
    "kind": "arxiv",
    "version": 1
  }
}