Pith Number

pith:IWCXOJIL

pith:2019:IWCXOJILCQIOSEZ4FOUBQH3CMK

not attested not anchored not stored refs pending

Douglas-Quaid -- Open Source Image Matching Library

Vincent Falconieri

arxiv:1908.04014 v1 · 2019-08-12 · cs.CR · 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{IWCXOJILCQIOSEZ4FOUBQH3CMK}

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	2026-07-04T23:53:19.995821Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

458577250b1410e9133c2ba8181f62629fdb995ee5e512ce9111a22ecdb70645

Aliases

arxiv: 1908.04014 · arxiv_version: 1908.04014v1 · doi: 10.48550/arxiv.1908.04014 · pith_short_12: IWCXOJILCQIO · pith_short_16: IWCXOJILCQIOSEZ4 · pith_short_8: IWCXOJIL

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/IWCXOJILCQIOSEZ4FOUBQH3CMK \
  | 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: 458577250b1410e9133c2ba8181f62629fdb995ee5e512ce9111a22ecdb70645

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "782011ddae3cda23746b44120066e8780cfad8b177ab2a1df60497e3803509f5",
    "cross_cats_sorted": [
      "cs.CV"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CR",
    "submitted_at": "2019-08-12T06:02:31Z",
    "title_canon_sha256": "1d67684805207217806f9de1b2f505abf4c5fe4ab0832f3013db7bad5f9abdd9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.04014",
    "kind": "arxiv",
    "version": 1
  }
}