Pith Number

pith:TPJJYD7H

pith:2020:TPJJYD7HKBO355NM2AY7THZDBW

not attested not anchored not stored refs pending

Self-supervised Feature Learning by Cross-modality and Cross-view Correspondences

Ling Zhang, Longlong Jing, Mingyi He, Yingli Tian, Yucheng Chen

arxiv:2004.05749 v1 · 2020-04-13 · 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{TPJJYD7HKBO355NM2AY7THZDBW}

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	2026-07-05T00:54:40.367979Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9bd29c0fe7505dbef5acd031f99f230db1b3637ad8eaee1668884510079fdba8

Aliases

arxiv: 2004.05749 · arxiv_version: 2004.05749v1 · doi: 10.48550/arxiv.2004.05749 · pith_short_12: TPJJYD7HKBO3 · pith_short_16: TPJJYD7HKBO355NM · pith_short_8: TPJJYD7H

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/TPJJYD7HKBO355NM2AY7THZDBW \
  | 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: 9bd29c0fe7505dbef5acd031f99f230db1b3637ad8eaee1668884510079fdba8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b4a22dfd644e237a6c62b14248de0398879758dfa0086412595064d401d03b24",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2020-04-13T02:57:25Z",
    "title_canon_sha256": "fcc445035c47bc7da037775b78fd1a37da158a8ca80096c5944a1b4df5025bb1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2004.05749",
    "kind": "arxiv",
    "version": 1
  }
}