Pith Number

pith:QNIF7RXR

pith:2021:QNIF7RXR2CVG5XTJJ462NGLWGX

not attested not anchored not stored refs pending

An Efficiently Coupled Shape and Appearance Prior for Active Contour Segmentation

Anthony Yezzi, Martin Mueller, Navdeep Dahiya

arxiv:2103.14887 v2 · 2021-03-27 · 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{QNIF7RXR2CVG5XTJJ462NGLWGX}

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	2026-07-05T02:27:55.904466Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

83505fc6f1d0aa6ede694f3da6997635d69e8c05083002f655fa0e0ab064744d

Aliases

arxiv: 2103.14887 · arxiv_version: 2103.14887v2 · doi: 10.48550/arxiv.2103.14887 · pith_short_12: QNIF7RXR2CVG · pith_short_16: QNIF7RXR2CVG5XTJ · pith_short_8: QNIF7RXR

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/QNIF7RXR2CVG5XTJJ462NGLWGX \
  | 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: 83505fc6f1d0aa6ede694f3da6997635d69e8c05083002f655fa0e0ab064744d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "51156c8c10931d74eb388340e326196f9bd75864a3f28c20fb4426af6b3b3ec2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2021-03-27T12:14:04Z",
    "title_canon_sha256": "ff13107cbcba23df775752c0c0db580af9213799403f43df1ca234ec98acb60b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2103.14887",
    "kind": "arxiv",
    "version": 2
  }
}