Pith Number

pith:WL2YJVM2

pith:2013:WL2YJVM2EPNP6MT3WHFAZNZR5X

not attested not anchored not stored refs pending

Shadow Detection: A Survey and Comparative Evaluation of Recent Methods

Andres Sanin, Brian C. Lovell, Conrad Sanderson

arxiv:1304.1233 v1 · 2013-04-04 · cs.CV · cs.RO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WL2YJVM2EPNP6MT3WHFAZNZR5X}

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	2026-05-18T03:29:04.178200Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b2f584d59a23daff327bb1ca0cb731ede4cdaf40f4a87d7ca502f4bcf8e2c4f4

Aliases

arxiv: 1304.1233 · arxiv_version: 1304.1233v1 · doi: 10.48550/arxiv.1304.1233 · pith_short_12: WL2YJVM2EPNP · pith_short_16: WL2YJVM2EPNP6MT3 · pith_short_8: WL2YJVM2

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/WL2YJVM2EPNP6MT3WHFAZNZR5X \
  | 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: b2f584d59a23daff327bb1ca0cb731ede4cdaf40f4a87d7ca502f4bcf8e2c4f4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "31663450f71f1e5c4863dfa7e85eb6cbb802b7b4dd5dec3d4d375b2a1575008a",
    "cross_cats_sorted": [
      "cs.RO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2013-04-04T03:11:38Z",
    "title_canon_sha256": "0dc63b6bcdff686e3a915254b2f98c9f751a53735437123b02718b4291fdf47b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1304.1233",
    "kind": "arxiv",
    "version": 1
  }
}