Pith Number

pith:2QASOZPC

pith:2021:2QASOZPCHIEVDSAC5QKCMILRRK

not attested not anchored not stored refs pending

Automatic Vocabulary and Graph Verification for Accurate Loop Closure Detection

Fanghong Guo, Haosong Yue, Jinyu MIao, Weihai Chen, Wei Wang, Zhengguo Li

arxiv:2107.14611 v1 · 2021-07-30 · 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{2QASOZPCHIEVDSAC5QKCMILRRK}

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	2026-07-05T03:02:02.596242Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d4012765e23a0951c802ec142621718ab1c3a2899dbda26461015447d747da7b

Aliases

arxiv: 2107.14611 · arxiv_version: 2107.14611v1 · doi: 10.48550/arxiv.2107.14611 · pith_short_12: 2QASOZPCHIEV · pith_short_16: 2QASOZPCHIEVDSAC · pith_short_8: 2QASOZPC

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/2QASOZPCHIEVDSAC5QKCMILRRK \
  | 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: d4012765e23a0951c802ec142621718ab1c3a2899dbda26461015447d747da7b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7b52dc9b83bca721dbf32c74c923e28440b8caa1589d2fe2ec382a5ec1952dc1",
    "cross_cats_sorted": [
      "cs.RO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2021-07-30T13:19:33Z",
    "title_canon_sha256": "ad422f44856669de26e9eedc65ba5c039b310ce2014256a1ca03091d7f34ac79"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2107.14611",
    "kind": "arxiv",
    "version": 1
  }
}