Pith Number

pith:QAJC4J3D

pith:2015:QAJC4J3DP3E2CC44ONSZZCRZNS

not attested not anchored not stored refs pending

Circle detection using isosceles triangles sampling

Hanqing Zhang, Krister Wiklund, Magnus Andersson

arxiv:1511.00461 v1 · 2015-11-02 · 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{QAJC4J3DP3E2CC44ONSZZCRZNS}

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	2026-05-18T01:28:12.267771Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

80122e27637ec9a10b9c73659c8a396c807dfad3210a8ae29055bef818f83fca

Aliases

arxiv: 1511.00461 · arxiv_version: 1511.00461v1 · doi: 10.48550/arxiv.1511.00461 · pith_short_12: QAJC4J3DP3E2 · pith_short_16: QAJC4J3DP3E2CC44 · pith_short_8: QAJC4J3D

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/QAJC4J3DP3E2CC44ONSZZCRZNS \
  | 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: 80122e27637ec9a10b9c73659c8a396c807dfad3210a8ae29055bef818f83fca

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "52e154b180eaf19dbcb53fb932e9e3017ceb6afc93682ddc6167fdb304568f2f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2015-11-02T11:55:30Z",
    "title_canon_sha256": "b201d7e112696bfc72e070424c8aa68c83745730bf9020ea59488ef4ea7d5efa"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1511.00461",
    "kind": "arxiv",
    "version": 1
  }
}