Pith Number

pith:T7W2CP5J

pith:2026:T7W2CP5JDK374FLTKXCFRAQ6AL

not attested not anchored not stored refs pending

Hydra++: Real-Time Hierarchical 3D Scene Graph Construction With Object-Level Shape Estimation

Hyungtae Lim, Jingnan Shi, Luca Carlone, Nathan Hughes, Rajat Talak, Ruihan Xu, Xihang Yu, Yun Chang

arxiv:2607.09455 v1 · 2026-07-10 · 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{T7W2CP5JDK374FLTKXCFRAQ6AL}

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	2026-07-13T01:19:16.532933Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9feda13fa91ab7fe157355c458821e02f0dd97396b611167c96c104bceb06ed0

Aliases

arxiv: 2607.09455 · arxiv_version: 2607.09455v1 · doi: 10.48550/arxiv.2607.09455 · pith_short_12: T7W2CP5JDK37 · pith_short_16: T7W2CP5JDK374FLT · pith_short_8: T7W2CP5J

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/T7W2CP5JDK374FLTKXCFRAQ6AL \
  | 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: 9feda13fa91ab7fe157355c458821e02f0dd97396b611167c96c104bceb06ed0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "34a6db772593674e1615d00a46754e721f567f884bf807fcc4544c8169f22be2",
    "cross_cats_sorted": [
      "cs.RO"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2026-07-10T14:24:16Z",
    "title_canon_sha256": "45541ce1b3f359cabdafc306337ffe905bfe586e6dc7152d10b16758e8c1203a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.09455",
    "kind": "arxiv",
    "version": 1
  }
}