Pith Number

pith:WTRKYZPA

pith:2017:WTRKYZPAIOPDRNXAPKPDOFCWMT

not attested not anchored not stored refs pending

Extracting urban impervious surface from GF-1 imagery using one-class classifiers

Jialv He, Jinbao Zhang, Yao Yao, Yatao Zhang

arxiv:1705.04824 v1 · 2017-05-13 · cs.CV · cs.CY

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WTRKYZPAIOPDRNXAPKPDOFCWMT}

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	2026-05-18T00:44:34.550687Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b4e2ac65e0439e38b6e07a9e37145664e2143adaaca5a3935c90ae2ec18ef4b3

Aliases

arxiv: 1705.04824 · arxiv_version: 1705.04824v1 · doi: 10.48550/arxiv.1705.04824 · pith_short_12: WTRKYZPAIOPD · pith_short_16: WTRKYZPAIOPDRNXA · pith_short_8: WTRKYZPA

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/WTRKYZPAIOPDRNXAPKPDOFCWMT \
  | 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: b4e2ac65e0439e38b6e07a9e37145664e2143adaaca5a3935c90ae2ec18ef4b3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "59b646c00a7013dcfbf58d987437dbd8c5e05c53890a5faf2bcc8d0b0462ccc7",
    "cross_cats_sorted": [
      "cs.CY"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2017-05-13T13:39:42Z",
    "title_canon_sha256": "3a7a1ca82177fc63f566eabc7a68d3beda69529c03db0cb233d4af4eaa1e0020"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1705.04824",
    "kind": "arxiv",
    "version": 1
  }
}