Pith Number

pith:BD2UZ3UR

pith:2021:BD2UZ3URUGQ7XW77JRCQ5BMYKK

not attested not anchored not stored refs pending

Learning to Estimate Hidden Motions with Global Motion Aggregation

Dylan Campbell, Hongdong Li, Richard Hartley, Shihao Jiang, Yao Lu

arxiv:2104.02409 v3 · 2021-04-06 · 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{BD2UZ3URUGQ7XW77JRCQ5BMYKK}

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	2026-07-05T03:01:55.487749Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

08f54cee91a1a1fbdbff4c450e859852b0554d0765910fa8897a5333e3cb48ba

Aliases

arxiv: 2104.02409 · arxiv_version: 2104.02409v3 · doi: 10.48550/arxiv.2104.02409 · pith_short_12: BD2UZ3URUGQ7 · pith_short_16: BD2UZ3URUGQ7XW77 · pith_short_8: BD2UZ3UR

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/BD2UZ3URUGQ7XW77JRCQ5BMYKK \
  | 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: 08f54cee91a1a1fbdbff4c450e859852b0554d0765910fa8897a5333e3cb48ba

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "05db6db1d0824ab40b05127923e4c956482fa695536da25cf3ee67b2bee81dfe",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2021-04-06T10:32:03Z",
    "title_canon_sha256": "cdb875498194260552aecf7091f50cb10efd5d9eb6c8cce401607e4974d19670"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2104.02409",
    "kind": "arxiv",
    "version": 3
  }
}