Pith Number

pith:4T2D7AUA

pith:2019:4T2D7AUAFXCYTXSSO2IBA6EF3U

not attested not anchored not stored refs pending

Feature Pyramid Hashing

Hanjiang Lai, Jian Yin, Libing Geng, Yan Pan, Yifan Yang

arxiv:1904.02325 v1 · 2019-04-04 · 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{4T2D7AUAFXCYTXSSO2IBA6EF3U}

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	2026-05-17T23:49:23.947375Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e4f43f82802dc589de527690107885dd0309bb3136dfbeb1f9624f985f3bcc23

Aliases

arxiv: 1904.02325 · arxiv_version: 1904.02325v1 · doi: 10.48550/arxiv.1904.02325 · pith_short_12: 4T2D7AUAFXCY · pith_short_16: 4T2D7AUAFXCYTXSS · pith_short_8: 4T2D7AUA

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/4T2D7AUAFXCYTXSSO2IBA6EF3U \
  | 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: e4f43f82802dc589de527690107885dd0309bb3136dfbeb1f9624f985f3bcc23

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f55509568a42d8fb0d53b5779a8d5507881abdb95446c33bb96482b5369310ea",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2019-04-04T03:05:39Z",
    "title_canon_sha256": "efb87e146bd5490c9d0f815fa3ea61e67fccc250a5c391ae58aadfdb16677754"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.02325",
    "kind": "arxiv",
    "version": 1
  }
}