Pith Number

pith:HRWQNFZC

pith:2017:HRWQNFZCSIR5XI62FUWEVP5ODN

not attested not anchored not stored refs pending

Bellwethers: A Baseline Method For Transfer Learning

Rahul Krishna, Tim Menzies

arxiv:1703.06218 v4 · 2017-03-17 · cs.SE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HRWQNFZCSIR5XI62FUWEVP5ODN}

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	2026-05-18T00:25:23.893171Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3c6d0697229223dba3da2d2c4abfae1b57b9c3e2e572d35ddefa1b7599530be7

Aliases

arxiv: 1703.06218 · arxiv_version: 1703.06218v4 · doi: 10.48550/arxiv.1703.06218 · pith_short_12: HRWQNFZCSIR5 · pith_short_16: HRWQNFZCSIR5XI62 · pith_short_8: HRWQNFZC

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/HRWQNFZCSIR5XI62FUWEVP5ODN \
  | 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: 3c6d0697229223dba3da2d2c4abfae1b57b9c3e2e572d35ddefa1b7599530be7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "312c2782a156d78cdc696760be6baa537d74c66bb3d3c76624f9d2660f5eccd3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SE",
    "submitted_at": "2017-03-17T23:54:01Z",
    "title_canon_sha256": "9988d8054c01c8d95d76ab7be0dfb5bec686ef855a10aa58c1d07b06d7348d82"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1703.06218",
    "kind": "arxiv",
    "version": 4
  }
}