Pith Number

pith:OJ7SB6QB

pith:2018:OJ7SB6QBIZ3OGSV6M2VL2NCE7Y

not attested not anchored not stored refs pending

Effective Cloud Detection and Segmentation using a Gradient-Based Algorithm for Satellite Imagery; Application to improve PERSIANN-CCS

Fuqing Zhang, Kuo-lin Hsu, Negin Hayatbini, Soroosh Sorooshian, Yunji Zhang

arxiv:1809.10801 v1 · 2018-09-27 · 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{OJ7SB6QBIZ3OGSV6M2VL2NCE7Y}

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	2026-05-18T00:04:35.024398Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

727f20fa014676e34abe66aabd3444fe259cbce6da0808e5fc8f92bbfe2142b3

Aliases

arxiv: 1809.10801 · arxiv_version: 1809.10801v1 · doi: 10.48550/arxiv.1809.10801 · pith_short_12: OJ7SB6QBIZ3O · pith_short_16: OJ7SB6QBIZ3OGSV6 · pith_short_8: OJ7SB6QB

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/OJ7SB6QBIZ3OGSV6M2VL2NCE7Y \
  | 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: 727f20fa014676e34abe66aabd3444fe259cbce6da0808e5fc8f92bbfe2142b3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "88e73aa89dff3b426b22fbb5b63020c6a6c1016511c9caf106633c6e5a66e307",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2018-09-27T23:59:24Z",
    "title_canon_sha256": "fede931f2eddb660a85d9f147b698b17bc021b41c4918e6bb0ffde24dda78111"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1809.10801",
    "kind": "arxiv",
    "version": 1
  }
}