Pith Number

pith:2XO4DXLY

pith:2013:2XO4DXLY5AEB27I2VNZYYNOWRX

not attested not anchored not stored refs pending

Felzenszwalb-Baum-Welch: Event Detection by Changing Appearance

Daniel Paul Barrett, Jeffrey Mark Siskind

arxiv:1306.4746 v1 · 2013-06-20 · 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{2XO4DXLY5AEB27I2VNZYYNOWRX}

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	2026-05-18T03:20:21.842574Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d5ddc1dd78e8081d7d1aab738c35d68ddad6f3e69c957e812134e7b1d5f27118

Aliases

arxiv: 1306.4746 · arxiv_version: 1306.4746v1 · doi: 10.48550/arxiv.1306.4746 · pith_short_12: 2XO4DXLY5AEB · pith_short_16: 2XO4DXLY5AEB27I2 · pith_short_8: 2XO4DXLY

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/2XO4DXLY5AEB27I2VNZYYNOWRX \
  | 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: d5ddc1dd78e8081d7d1aab738c35d68ddad6f3e69c957e812134e7b1d5f27118

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5430733b243db34ee8da9a87fd5e5337f7582b8c62aa324341d8c65ef4985234",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2013-06-20T03:22:19Z",
    "title_canon_sha256": "573970d9577db7d7589a70ae38dc2c94811f3529eab587a4346c0ef2a26dcc64"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1306.4746",
    "kind": "arxiv",
    "version": 1
  }
}