Pith Number

pith:7WMP4VNV

pith:2020:7WMP4VNVBB3AJ5OAUB3ALDQWEN

not attested not anchored not stored refs pending

Learning by Analogy: Reliable Supervision from Transformations for Unsupervised Optical Flow Estimation

Chengjie Wang, Donghao Luo, Feiyue Huang, Jiangning Zhang, Jilin Li, Liang Liu, Ruifei He, Yabiao Wang, Ying Tai, Yong Liu

arxiv:2003.13045 v2 · 2020-03-29 · 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{7WMP4VNVBB3AJ5OAUB3ALDQWEN}

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	2026-07-05T01:55:09.054426Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fd98fe55b5087604f5c0a076058e162379be90e3fefa9952cb16a5e566aedb6d

Aliases

arxiv: 2003.13045 · arxiv_version: 2003.13045v2 · doi: 10.48550/arxiv.2003.13045 · pith_short_12: 7WMP4VNVBB3A · pith_short_16: 7WMP4VNVBB3AJ5OA · pith_short_8: 7WMP4VNV

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/7WMP4VNVBB3AJ5OAUB3ALDQWEN \
  | 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: fd98fe55b5087604f5c0a076058e162379be90e3fefa9952cb16a5e566aedb6d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7bd888aa9a61bcf6d27abd4100f330db1842a77c37f18964aa4737bbeef6a16c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2020-03-29T14:55:24Z",
    "title_canon_sha256": "5a4a36fb778c7b1f5759fae4395efda2f453da2dffd86f178d71badcfaf11870"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2003.13045",
    "kind": "arxiv",
    "version": 2
  }
}