Pith Number

pith:FQF7OCX4

pith:2022:FQF7OCX4XX2BLT4H22QOQXBVKB

not attested not anchored not stored refs pending

Lightweight Object-level Topological Semantic Mapping and Long-term Global Localization based on Graph Matching

Chaofan Zhang, Fan Wang, Fulin Tang, Hongkui Jiang, Yihong Wu, Yong Liu

arxiv:2201.05977 v1 · 2022-01-16 · cs.RO · 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{FQF7OCX4XX2BLT4H22QOQXBVKB}

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	2026-07-05T03:48:53.644420Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2c0bf70afcbdf415cf87d6a0e85c355059114836359652b553f9f74f8109b473

Aliases

arxiv: 2201.05977 · arxiv_version: 2201.05977v1 · doi: 10.48550/arxiv.2201.05977 · pith_short_12: FQF7OCX4XX2B · pith_short_16: FQF7OCX4XX2BLT4H · pith_short_8: FQF7OCX4

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/FQF7OCX4XX2BLT4H22QOQXBVKB \
  | 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: 2c0bf70afcbdf415cf87d6a0e85c355059114836359652b553f9f74f8109b473

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e48894bb22d5c5ad992b94931428b0e8820b682fcbb8eba5fb80b90f6a761a86",
    "cross_cats_sorted": [
      "cs.CV"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.RO",
    "submitted_at": "2022-01-16T05:47:07Z",
    "title_canon_sha256": "da2a052b1e88d6f295f5ed8c091e365b7ed422ea2ac76f1b66898bca4e5fe1a0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2201.05977",
    "kind": "arxiv",
    "version": 1
  }
}