Pith Number

pith:TZHNZPNU

pith:2019:TZHNZPNUE3JBY64SK2DHEQGP2X

not attested not anchored not stored refs pending

TopoTag: A Robust and Scalable Topological Fiducial Marker System

Guoxing Yu, Jingwen Dai, Yongtao Hu

arxiv:1908.01450 v3 · 2019-08-05 · cs.CV · cs.RO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{TZHNZPNUE3JBY64SK2DHEQGP2X}

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	2026-07-05T00:55:17.674840Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9e4edcbdb426d21c7b9256867240cfd5c704a420e619ad9783260727db13ca9f

Aliases

arxiv: 1908.01450 · arxiv_version: 1908.01450v3 · doi: 10.48550/arxiv.1908.01450 · pith_short_12: TZHNZPNUE3JB · pith_short_16: TZHNZPNUE3JBY64S · pith_short_8: TZHNZPNU

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/TZHNZPNUE3JBY64SK2DHEQGP2X \
  | 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: 9e4edcbdb426d21c7b9256867240cfd5c704a420e619ad9783260727db13ca9f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "46d71a8a827792eb324cc55526aa6a07156ee5a23b202bb727598a72892f76d6",
    "cross_cats_sorted": [
      "cs.RO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2019-08-05T02:57:50Z",
    "title_canon_sha256": "9a20eb04853c8dc24038c61df6d21cd84a71a43a7f124cb545afc27044bc258a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.01450",
    "kind": "arxiv",
    "version": 3
  }
}