Pith Number

pith:6Q76MNW5

pith:2018:6Q76MNW53TNPDL4QNWGGYKQGQT

not attested not anchored not stored refs pending

From handcrafted to deep local features

Christopher R. Dance, Gabriela Csurka, Martin Humenberger

arxiv:1807.10254 v3 · 2018-07-26 · 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{6Q76MNW53TNPDL4QNWGGYKQGQT}

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	2026-05-17T23:43:23.773861Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f43fe636dddcdaf1af906d8c6c2a0684c9af4cd7e6358c338bf1eb9145d7d4d3

Aliases

arxiv: 1807.10254 · arxiv_version: 1807.10254v3 · doi: 10.48550/arxiv.1807.10254 · pith_short_12: 6Q76MNW53TNP · pith_short_16: 6Q76MNW53TNPDL4Q · pith_short_8: 6Q76MNW5

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/6Q76MNW53TNPDL4QNWGGYKQGQT \
  | 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: f43fe636dddcdaf1af906d8c6c2a0684c9af4cd7e6358c338bf1eb9145d7d4d3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3d7994fb031f5df230ad81e95bca753ba384f577da6a9d546762b015f3f139fb",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2018-07-26T17:28:28Z",
    "title_canon_sha256": "3f652ccb68e36e2182127153d0649fdf75d784d84bd61b5c289832b0c9b4dabf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.10254",
    "kind": "arxiv",
    "version": 3
  }
}