Pith Number

pith:Z7T4HQH6

pith:2020:Z7T4HQH6JY65CF2MLJSNPK2PR5

not attested not anchored not stored refs pending

Same Features, Different Day: Weakly Supervised Feature Learning for Seasonal Invariance

Jaime Spencer, Richard Bowden, Simon Hadfield

arxiv:2003.13431 v1 · 2020-03-30 · 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{Z7T4HQH6JY65CF2MLJSNPK2PR5}

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	2026-07-05T00:51:23.189969Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cfe7c3c0fe4e3dd1174c5a64d7ab4f8f689f129362339281a2027c104b599a9a

Aliases

arxiv: 2003.13431 · arxiv_version: 2003.13431v1 · doi: 10.48550/arxiv.2003.13431 · pith_short_12: Z7T4HQH6JY65 · pith_short_16: Z7T4HQH6JY65CF2M · pith_short_8: Z7T4HQH6

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/Z7T4HQH6JY65CF2MLJSNPK2PR5 \
  | 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: cfe7c3c0fe4e3dd1174c5a64d7ab4f8f689f129362339281a2027c104b599a9a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "de3390e8b9ab545806ec2cfc8839cb593b2d3a0dcd6c63ad3e7faab38869efcc",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2020-03-30T12:56:44Z",
    "title_canon_sha256": "3ec4731bbb1373b4ee00a055e1c54c69c635d39ef7d695b4661dec8e9f64b9db"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2003.13431",
    "kind": "arxiv",
    "version": 1
  }
}