Pith Number

pith:L3UZIUFV

pith:2021:L3UZIUFV53VVDIDA3MU7P2ACSA

not attested not anchored not stored refs pending

Self-Supervised Pretraining Improves Self-Supervised Pretraining

Ani Nrusimha, Bo Li, Colorado J. Reed, Devin Guillory, Kurt Keutzer, Richard Mao, Sayna Ebrahimi, Sean Metzger, Shanghang Zhang, Trevor Darrell, Vivek Vijaykumar, Xiangyu Yue

arxiv:2103.12718 v2 · 2021-03-23 · 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{L3UZIUFV53VVDIDA3MU7P2ACSA}

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	2026-07-05T02:26:18.743596Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5ee99450b5eeeb51a060db29f7e80290155f229674bb5a7114e94ccd94e6ad51

Aliases

arxiv: 2103.12718 · arxiv_version: 2103.12718v2 · doi: 10.48550/arxiv.2103.12718 · pith_short_12: L3UZIUFV53VV · pith_short_16: L3UZIUFV53VVDIDA · pith_short_8: L3UZIUFV

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/L3UZIUFV53VVDIDA3MU7P2ACSA \
  | 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: 5ee99450b5eeeb51a060db29f7e80290155f229674bb5a7114e94ccd94e6ad51

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c5c1a5290263b21340c5f11e3d5e1def0fa6643f5c7cf3f5d7836119f336f0d1",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2021-03-23T17:37:51Z",
    "title_canon_sha256": "7445f24fe471e385907e70a0bfb0bb66d64a2297b94008e663334fe7aea3d33d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2103.12718",
    "kind": "arxiv",
    "version": 2
  }
}