Pith Number

pith:QF7JL4GK

pith:2012:QF7JL4GKEWZMMYTWQHVKBG3Y3K

not attested not anchored not stored refs pending

Scilab and SIP for Image Processing

Luciano da Fontoura Costa, Odemir Martinez Bruno, Ricardo Fabbri

arxiv:1203.4009 v1 · 2012-03-18 · cs.MS · 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{QF7JL4GKEWZMMYTWQHVKBG3Y3K}

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	2026-05-18T03:59:48.459603Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

817e95f0ca25b2c6627681eaa09b78da88ec07a11c9531bf1e092a55075c3797

Aliases

arxiv: 1203.4009 · arxiv_version: 1203.4009v1 · doi: 10.48550/arxiv.1203.4009 · pith_short_12: QF7JL4GKEWZM · pith_short_16: QF7JL4GKEWZMMYTW · pith_short_8: QF7JL4GK

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/QF7JL4GKEWZMMYTWQHVKBG3Y3K \
  | 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: 817e95f0ca25b2c6627681eaa09b78da88ec07a11c9531bf1e092a55075c3797

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ffa529ea66aea190eac73569cd504bd0b35276a5f59903ab874774620bd6a488",
    "cross_cats_sorted": [
      "cs.CV"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.MS",
    "submitted_at": "2012-03-18T23:51:19Z",
    "title_canon_sha256": "fe2318f094135bb90685c8eb786191350167c4a763bf0092544784ca83530594"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1203.4009",
    "kind": "arxiv",
    "version": 1
  }
}