Pith Number

pith:QFHOIRWK

pith:2025:QFHOIRWKQPPCCYAF6XDWQWBDCZ

not attested not anchored not stored refs pending

3D Hand-Eye Calibration for Collaborative Robot Arm: Look at Robot Base Once

Leihui Li, Lixuepiao Wan, Volker Krueger, Xuping Zhang

arxiv:2504.21619 v2 · 2025-04-30 · 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{QFHOIRWKQPPCCYAF6XDWQWBDCZ}

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	2026-07-05T11:00:44.384333Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

814ee446ca83de216005f5c7685823167617da3053d4582284f8155b5b7c1566

Aliases

arxiv: 2504.21619 · arxiv_version: 2504.21619v2 · doi: 10.48550/arxiv.2504.21619 · pith_short_12: QFHOIRWKQPPC · pith_short_16: QFHOIRWKQPPCCYAF · pith_short_8: QFHOIRWK

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/QFHOIRWKQPPCCYAF6XDWQWBDCZ \
  | 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: 814ee446ca83de216005f5c7685823167617da3053d4582284f8155b5b7c1566

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ceb6b611c13ee85a85a404dcbbc49637ca97590dcf0a64a3403e2286849de4c3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.RO",
    "submitted_at": "2025-04-30T13:20:57Z",
    "title_canon_sha256": "c315d4a8834dc20de2509a62182b9957e8104f74b3385710f054faf6a6b54a17"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2504.21619",
    "kind": "arxiv",
    "version": 2
  }
}