Pith Number

pith:ZBWAOAKW

pith:2015:ZBWAOAKWPT4F5WS7LMQBPYW4FA

not attested not anchored not stored refs pending

A spectral optical flow method for determining velocities from digital imagery

Neal Hurlburt, Steve Jaffey

arxiv:1504.04660 v1 · 2015-04-17 · cs.CV · astro-ph.IM

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ZBWAOAKWPT4F5WS7LMQBPYW4FA}

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	2026-05-18T01:25:39.246094Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c86c0701567cf85eda5f5b2017e2dc2821455d58b2a896b89b95a37e1be143a5

Aliases

arxiv: 1504.04660 · arxiv_version: 1504.04660v1 · doi: 10.48550/arxiv.1504.04660 · pith_short_12: ZBWAOAKWPT4F · pith_short_16: ZBWAOAKWPT4F5WS7 · pith_short_8: ZBWAOAKW

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/ZBWAOAKWPT4F5WS7LMQBPYW4FA \
  | 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: c86c0701567cf85eda5f5b2017e2dc2821455d58b2a896b89b95a37e1be143a5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0a71c2d966bbf8c46f242fe00ccd101491057b147082690e73a60cb66b83c1be",
    "cross_cats_sorted": [
      "astro-ph.IM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2015-04-17T23:44:20Z",
    "title_canon_sha256": "efda4b9ea31b2eb5b187941f3492adf1e5478ff65c2b546d37893829ac88ba72"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.04660",
    "kind": "arxiv",
    "version": 1
  }
}