Pith Number

pith:PYDQH5DC

pith:2025:PYDQH5DCTRIJIIBKIE55QUS4QK

not attested not anchored not stored refs pending

Sparfels: Fast Reconstruction from Sparse Unposed Imagery

Adnane Boukhayma, Amine Ouasfi, Mae Younes, Shubhendu Jena

arxiv:2505.02178 v4 · 2025-05-04 · 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{PYDQH5DCTRIJIIBKIE55QUS4QK}

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	2026-07-05T11:45:57.918933Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7e0703f4629c5094202a413bd8525c82a46bf78e6eb0ebaad5fbb2dc946f217f

Aliases

arxiv: 2505.02178 · arxiv_version: 2505.02178v4 · doi: 10.48550/arxiv.2505.02178 · pith_short_12: PYDQH5DCTRIJ · pith_short_16: PYDQH5DCTRIJIIBK · pith_short_8: PYDQH5DC

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/PYDQH5DCTRIJIIBKIE55QUS4QK \
  | 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: 7e0703f4629c5094202a413bd8525c82a46bf78e6eb0ebaad5fbb2dc946f217f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c3d6c684b1ffed5817cb25c1748fc8f2de0c65cb7fce00333ef83d6cc4089f4f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2025-05-04T16:40:24Z",
    "title_canon_sha256": "36ce2fb495756cc170636b905a9eacbc6685cbfd6d1343e9432113835d1d4430"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2505.02178",
    "kind": "arxiv",
    "version": 4
  }
}