Pith Number

pith:XDK6SHP7

pith:2022:XDK6SHP7SWLSWNAPR525LPOTG7

not attested not anchored not stored refs pending

Oolong: Investigating What Makes Transfer Learning Hard with Controlled Studies

Alex Tamkin, Isabel Papadimitriou, Zhengxuan Wu

arxiv:2202.12312 v2 · 2022-02-24 · cs.CL

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XDK6SHP7SWLSWNAPR525LPOTG7}

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	2026-07-05T07:36:48.823420Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b8d5e91dff95972b340f8f75d5bdd337c09a3afb2859a6b3688ad8554495bc7c

Aliases

arxiv: 2202.12312 · arxiv_version: 2202.12312v2 · doi: 10.48550/arxiv.2202.12312 · pith_short_12: XDK6SHP7SWLS · pith_short_16: XDK6SHP7SWLSWNAP · pith_short_8: XDK6SHP7

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/XDK6SHP7SWLSWNAPR525LPOTG7 \
  | 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: b8d5e91dff95972b340f8f75d5bdd337c09a3afb2859a6b3688ad8554495bc7c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e8778266d82b273618dba6fc7f0b6fd50c0586ff66125052488359ae578d0d2a",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2022-02-24T19:00:39Z",
    "title_canon_sha256": "f8c359f38671fd4b68b1448c374aa0f0a73d717f7e6090570f39c1f695fffef2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2202.12312",
    "kind": "arxiv",
    "version": 2
  }
}