Pith Number

pith:A4PQN63R

pith:2021:A4PQN63RAD33JWXK6CJWGTUKKY

not attested not anchored not stored refs pending

Flood Segmentation on Sentinel-1 SAR Imagery with Semi-Supervised Learning

Sayak Paul, Siddha Ganju

arxiv:2107.08369 v4 · 2021-07-18 · cs.CV · cs.AI · cs.LG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{A4PQN63RAD33JWXK6CJWGTUKKY}

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.

Cited by

2 papers in Pith

Beyond Backscatter: AlphaEarth Land-Cover Priors for Rapid SAR Flood Segmentation Across Foundation Backbones

Urban Flood Observations: A hand-labeled training and validation dataset of post-flood inundation

Receipt and verification

First computed	2026-07-05T03:25:16.216630Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

071f06fb7100f7b4daeaf093634e8a5623ce82878563e8937dccab34e004231a

Aliases

arxiv: 2107.08369 · arxiv_version: 2107.08369v4 · doi: 10.48550/arxiv.2107.08369 · pith_short_12: A4PQN63RAD33 · pith_short_16: A4PQN63RAD33JWXK · pith_short_8: A4PQN63R

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/A4PQN63RAD33JWXK6CJWGTUKKY \
  | 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: 071f06fb7100f7b4daeaf093634e8a5623ce82878563e8937dccab34e004231a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4d0f067fda7ede0d032d285395d404638d99cc11dd1633732d8aac310657dac3",
    "cross_cats_sorted": [
      "cs.AI",
      "cs.LG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2021-07-18T05:42:10Z",
    "title_canon_sha256": "05d2df41044e9aa8bf99e59d872f6fe555c8e770e8ba4fc9e6ae49b4b69ba5f0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2107.08369",
    "kind": "arxiv",
    "version": 4
  }
}