Pith Number

pith:ZFG3QM6Y

pith:2017:ZFG3QM6YC5HFVJWWBWOBP3PHRT

not attested not anchored not stored refs pending

A Watershed Delineation Algorithm for 2D Flow Direction Grids

Ali Shokoufandeh, Scott Haag

arxiv:1708.00354 v1 · 2017-08-01 · cs.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ZFG3QM6YC5HFVJWWBWOBP3PHRT}

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	2026-05-18T00:38:49.738103Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c94db833d8174e5aa6d60d9c17ede78cca67795d697eeddb6d7f524f382d6c4e

Aliases

arxiv: 1708.00354 · arxiv_version: 1708.00354v1 · doi: 10.48550/arxiv.1708.00354 · pith_short_12: ZFG3QM6YC5HF · pith_short_16: ZFG3QM6YC5HFVJWW · pith_short_8: ZFG3QM6Y

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/ZFG3QM6YC5HFVJWWBWOBP3PHRT \
  | 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: c94db833d8174e5aa6d60d9c17ede78cca67795d697eeddb6d7f524f382d6c4e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d620a3e597d80d842c6a79ff071da6ea7c84fd96466e904590c6ba4408434f0b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2017-08-01T14:25:38Z",
    "title_canon_sha256": "5cdcc1f9dae0f348ef524497c2cb2aeaa6f0188026c2ade36feaed64e04fcaa9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1708.00354",
    "kind": "arxiv",
    "version": 1
  }
}