Pith Number

pith:GJOAUHI2

pith:2020:GJOAUHI2SVOFMGCVOS5EWUH4D6

not attested not anchored not stored refs pending

Addressing machine learning concept drift reveals declining vaccine sentiment during the COVID-19 pandemic

Marcel Salath\'e, Martin M\"uller

arxiv:2012.02197 v2 · 2020-12-03 · cs.SI · 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{GJOAUHI2SVOFMGCVOS5EWUH4D6}

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	2026-07-05T01:57:22.466472Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

325c0a1d1a955c56185574ba4b50fc1fa010c183ee851f60f35ef860cc987bb7

Aliases

arxiv: 2012.02197 · arxiv_version: 2012.02197v2 · doi: 10.48550/arxiv.2012.02197 · pith_short_12: GJOAUHI2SVOF · pith_short_16: GJOAUHI2SVOFMGCV · pith_short_8: GJOAUHI2

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/GJOAUHI2SVOFMGCVOS5EWUH4D6 \
  | 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: 325c0a1d1a955c56185574ba4b50fc1fa010c183ee851f60f35ef860cc987bb7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "393d30209bb5a2fda8660ec43d51372791404b2b70237bc7521a983958de4359",
    "cross_cats_sorted": [
      "cs.CL"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.SI",
    "submitted_at": "2020-12-03T18:53:57Z",
    "title_canon_sha256": "82afef795c768e3c24f5a35ea0c7883aa9ca0111878889144656b34d9109ab6e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2012.02197",
    "kind": "arxiv",
    "version": 2
  }
}