Pith Number

pith:7AVK6SPZ

pith:2018:7AVK6SPZAG4QO223SNFXRFHHDM

not attested not anchored not stored refs pending

Offline Signature Verification by Combining Graph Edit Distance and Triplet Networks

Andreas Fischer, Kaspar Riesen, Marcus Liwicki, Michele Alberti, Paul Maergner, Rolf Ingold, Vinaychandran Pondenkandath

arxiv:1810.07491 v1 · 2018-10-17 · 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{7AVK6SPZAG4QO223SNFXRFHHDM}

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	2026-05-18T00:02:56.210218Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f82aaf49f901b9076b5b934b7894e71b007c75d91017e6d5ef4d2f98bc8c4d6c

Aliases

arxiv: 1810.07491 · arxiv_version: 1810.07491v1 · doi: 10.48550/arxiv.1810.07491 · pith_short_12: 7AVK6SPZAG4Q · pith_short_16: 7AVK6SPZAG4QO223 · pith_short_8: 7AVK6SPZ

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/7AVK6SPZAG4QO223SNFXRFHHDM \
  | 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: f82aaf49f901b9076b5b934b7894e71b007c75d91017e6d5ef4d2f98bc8c4d6c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "657de39694b54e4dec7be9fba4f0bed14ee964e33e69866a2275e2b1e199f600",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2018-10-17T11:55:04Z",
    "title_canon_sha256": "fac9d01d0eb9b5fb33d9fc083e617938b2cc0682d1d236db8561f4bf9de1bee8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1810.07491",
    "kind": "arxiv",
    "version": 1
  }
}