Pith Number

pith:F7GUP6OQ

pith:2020:F7GUP6OQLT7SKKMN7MBTITUYV5

not attested not anchored not stored refs pending

D3Feat: Joint Learning of Dense Detection and Description of 3D Local Features

Chiew-Lan Tai, Hongbo Fu, Lei Zhou, Long Quan, Xuyang Bai, Zixin Luo

arxiv:2003.03164 v1 · 2020-03-06 · 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{F7GUP6OQLT7SKKMN7MBTITUYV5}

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	2026-07-05T00:46:10.490552Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2fcd47f9d05cff25298dfb03344e98af61da651eea7eab184c6d9dd013907d04

Aliases

arxiv: 2003.03164 · arxiv_version: 2003.03164v1 · doi: 10.48550/arxiv.2003.03164 · pith_short_12: F7GUP6OQLT7S · pith_short_16: F7GUP6OQLT7SKKMN · pith_short_8: F7GUP6OQ

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/F7GUP6OQLT7SKKMN7MBTITUYV5 \
  | 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: 2fcd47f9d05cff25298dfb03344e98af61da651eea7eab184c6d9dd013907d04

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "10749c864cc9654edd24fe9a377b86318abd167d57bc3afbd04e9e70d12980f1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2020-03-06T12:51:09Z",
    "title_canon_sha256": "f857f8702bab36cfeb6ffe526b1bee4dd5bb1c277a9a120799f4f852e4045b65"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2003.03164",
    "kind": "arxiv",
    "version": 1
  }
}