Pith Number

pith:7HUS7HAQ

pith:2017:7HUS7HAQKRX4SLUAFBU7UGABFR

not attested not anchored not stored refs pending

A Performance Evaluation of Local Features for Image Based 3D Reconstruction

Bin Fan, Chunhong Pan, Pascal Fua, Qingqun Kong, Shiming Xiang, Xinchao Wang, Zhiheng Wang

arxiv:1712.05271 v1 · 2017-12-14 · 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{7HUS7HAQKRX4SLUAFBU7UGABFR}

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	2026-05-18T00:27:58.418727Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f9e92f9c10546fc92e802869fa18012c733d65c6ba6c6cc461ebf786c7063df9

Aliases

arxiv: 1712.05271 · arxiv_version: 1712.05271v1 · doi: 10.48550/arxiv.1712.05271 · pith_short_12: 7HUS7HAQKRX4 · pith_short_16: 7HUS7HAQKRX4SLUA · pith_short_8: 7HUS7HAQ

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/7HUS7HAQKRX4SLUAFBU7UGABFR \
  | 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: f9e92f9c10546fc92e802869fa18012c733d65c6ba6c6cc461ebf786c7063df9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1848575d3e334751b66af881f9887bce55bd1f41c8cd58c008da7f2e16e1de53",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2017-12-14T15:04:58Z",
    "title_canon_sha256": "ba7f589fe01a257c4acb7dbb95e1cf5dab896b2960f22ddce11c967f0407386e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1712.05271",
    "kind": "arxiv",
    "version": 1
  }
}