Pith Number

pith:4DF3TM4R

pith:2021:4DF3TM4R4HVFQF5WP52R4AQIPY

not attested not anchored not stored refs pending

OCRTOC: A Cloud-Based Competition and Benchmark for Robotic Grasping and Manipulation

Berk Calli, Fanbo Xiang, Hao Su, Maximo A. Roa, Minghao Gou, Ping Tan, Songyan Xin, Wei Liu, Yu Sun, Yuzhe Qin, Ziyuan Liu

arxiv:2104.11446 v2 · 2021-04-23 · 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{4DF3TM4R4HVFQF5WP52R4AQIPY}

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	2026-07-05T03:08:54.714986Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e0cbb9b391e1ea5817b67f751e02087e3983c533f34240ad4a3f705db10953bf

Aliases

arxiv: 2104.11446 · arxiv_version: 2104.11446v2 · doi: 10.48550/arxiv.2104.11446 · pith_short_12: 4DF3TM4R4HVF · pith_short_16: 4DF3TM4R4HVFQF5W · pith_short_8: 4DF3TM4R

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/4DF3TM4R4HVFQF5WP52R4AQIPY \
  | 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: e0cbb9b391e1ea5817b67f751e02087e3983c533f34240ad4a3f705db10953bf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e9c67039c5a27327a106549e4b4814bb1ac053647af2311698da285f9268fe49",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.RO",
    "submitted_at": "2021-04-23T07:18:13Z",
    "title_canon_sha256": "f1d6848c197c063f4888467e0c72c7d15235edf821c610aa628fc493ec40bf0c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2104.11446",
    "kind": "arxiv",
    "version": 2
  }
}