Pith Number

pith:UZF2GMI7

pith:2014:UZF2GMI7ZJDHFZDHMYLKEHXKNA

not attested not anchored not stored refs pending

Comparing Feature Detectors: A bias in the repeatability criteria, and how to correct it

Ives Rey-Otero, Jean-Michel Morel, Mauricio Delbracio

arxiv:1409.2465 v2 · 2014-09-08 · 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{UZF2GMI7ZJDHFZDHMYLKEHXKNA}

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	2026-05-18T02:43:10.385340Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a64ba3311fca4672e4676616a21eea6811e204fde6b11e41ddc89ddd79495217

Aliases

arxiv: 1409.2465 · arxiv_version: 1409.2465v2 · doi: 10.48550/arxiv.1409.2465 · pith_short_12: UZF2GMI7ZJDH · pith_short_16: UZF2GMI7ZJDHFZDH · pith_short_8: UZF2GMI7

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/UZF2GMI7ZJDHFZDHMYLKEHXKNA \
  | 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: a64ba3311fca4672e4676616a21eea6811e204fde6b11e41ddc89ddd79495217

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6a09a297696fb97916188513d7ca0b1ec480f21cc6caed2ba2390b49755eece7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2014-09-08T19:02:01Z",
    "title_canon_sha256": "451265e11c7152f06a79a84808e637110e1f806289e3ba630e828e513c93c9e5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1409.2465",
    "kind": "arxiv",
    "version": 2
  }
}