Pith Number

pith:4WRMIXKR

pith:2021:4WRMIXKR5I2YM2QWUGL33LUBQY

not attested not anchored not stored refs pending

Staying in Shape: Learning Invariant Shape Representations using Contrastive Learning

Jeffrey Gu, Serena Yeung

arxiv:2107.03552 v1 · 2021-07-08 · 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{4WRMIXKR5I2YM2QWUGL33LUBQY}

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	2026-07-05T02:56:07.147813Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e5a2c45d51ea35866a16a197bdae81862bc5d5781b7b132bd220305c9eabed6d

Aliases

arxiv: 2107.03552 · arxiv_version: 2107.03552v1 · doi: 10.48550/arxiv.2107.03552 · pith_short_12: 4WRMIXKR5I2Y · pith_short_16: 4WRMIXKR5I2YM2QW · pith_short_8: 4WRMIXKR

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/4WRMIXKR5I2YM2QWUGL33LUBQY \
  | 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: e5a2c45d51ea35866a16a197bdae81862bc5d5781b7b132bd220305c9eabed6d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ad144ed51c5897194132f887f6015c9138d143cefb13a82a8b88f35e2e9a0330",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2021-07-08T00:53:24Z",
    "title_canon_sha256": "2e1143165cd0f5dd27e8f1ea64ec0e432a639e0d476eedd42b44d208daad6abb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2107.03552",
    "kind": "arxiv",
    "version": 1
  }
}