Pith Number

pith:WORIUDFK

pith:2026:WORIUDFKTTQZZRH5NXNTGMOEBZ

not attested not anchored not stored refs pending

Spa3R: Predictive Spatial Field Modeling for 3D Visual Reasoning

Haoyi Jiang, Liu Liu, Wei Sui, Wenyu Liu, Xinggang Wang, Xinjie Wang, Yonghao He, Zhizhong Su

arxiv:2602.21186 v2 · 2026-02-24 · 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{WORIUDFKTTQZZRH5NXNTGMOEBZ}

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.

Cited by

2 papers in Pith

HoloAgent-0: A Unified Embodied Agent Framework with 3D Spatial Memory

LLaVA-OneVision-2: Towards Next-Generation Perceptual Intelligence

Receipt and verification

First computed	2026-08-14T00:55:45.383554Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b3a28a0caa9ce19cc4fd6ddb3331c40e7d7cd56570410c002420ce46bb5a6d00

Aliases

arxiv: 2602.21186 · arxiv_version: 2602.21186v2 · doi: 10.48550/arxiv.2602.21186 · pith_short_12: WORIUDFKTTQZ · pith_short_16: WORIUDFKTTQZZRH5 · pith_short_8: WORIUDFK

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/WORIUDFKTTQZZRH5NXNTGMOEBZ \
  | 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: b3a28a0caa9ce19cc4fd6ddb3331c40e7d7cd56570410c002420ce46bb5a6d00

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6db67c5cfa084bed856a4fb5482997114379c4a421bf1038fc8d88c58baaf51e",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2026-02-24T18:37:34Z",
    "title_canon_sha256": "323fcb2bb27ebbda7d5dc23e2b044634ad1d527b6d40c1c7bc669b1641693d26"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2602.21186",
    "kind": "arxiv",
    "version": 2
  }
}