Pith Number

pith:DGVDYAVY

pith:2019:DGVDYAVYVQPSMS7TDY4D7CBH2A

not attested not anchored not stored refs pending

DDFlow: Learning Optical Flow with Unlabeled Data Distillation

Irwin King, Jia Xu, Michael R.Lyu, Pengpeng Liu

arxiv:1902.09145 v1 · 2019-02-25 · 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{DGVDYAVYVQPSMS7TDY4D7CBH2A}

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	2026-05-17T23:52:46.522407Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

19aa3c02b8ac1f264bf31e383f8827d02a45d31201cac9a4342885ebff7a83df

Aliases

arxiv: 1902.09145 · arxiv_version: 1902.09145v1 · doi: 10.48550/arxiv.1902.09145 · pith_short_12: DGVDYAVYVQPS · pith_short_16: DGVDYAVYVQPSMS7T · pith_short_8: DGVDYAVY

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/DGVDYAVYVQPSMS7TDY4D7CBH2A \
  | 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: 19aa3c02b8ac1f264bf31e383f8827d02a45d31201cac9a4342885ebff7a83df

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "198b372ad7a0f9fd9efc3bdb995c6421596aa7363330e2b0d9561e8ff431acd7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2019-02-25T08:58:10Z",
    "title_canon_sha256": "4e8f84b48727d56164a5508d4c1d4bf2f7acdbbb890d1373a99d3332032a4daa"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.09145",
    "kind": "arxiv",
    "version": 1
  }
}