Pith Number

pith:B3HS3SZQ

pith:2019:B3HS3SZQ57RQJZTUCLWRYIAL74

not attested not anchored not stored refs pending

Fitting, Comparison, and Alignment of Trajectories on Positive Semi-Definite Matrices with Application to Action Recognition

Alberto Del Bimbo, Benjamin Szczapa, Estelle Massart, Mohamed Daoudi, Pietro Pala, Stefano Berretti

arxiv:1908.00646 v3 · 2019-08-01 · 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{B3HS3SZQ57RQJZTUCLWRYIAL74}

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	2026-07-05T00:03:00.049691Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0ecf2dcb30efe304e67412ed1c200bff0f76478e1949a2ea4e13a986b8e03c61

Aliases

arxiv: 1908.00646 · arxiv_version: 1908.00646v3 · doi: 10.48550/arxiv.1908.00646 · pith_short_12: B3HS3SZQ57RQ · pith_short_16: B3HS3SZQ57RQJZTU · pith_short_8: B3HS3SZQ

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/B3HS3SZQ57RQJZTUCLWRYIAL74 \
  | 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: 0ecf2dcb30efe304e67412ed1c200bff0f76478e1949a2ea4e13a986b8e03c61

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "eb00e0383c1826b888ce6b25293833268e3576ef00ac1af4fe8d8b877f501570",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2019-08-01T22:25:24Z",
    "title_canon_sha256": "1666aac0f3cf49da1f38c17c8c937e8a4e972941907144fe4198d9fc90417fb5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.00646",
    "kind": "arxiv",
    "version": 3
  }
}