Pith Number

pith:ZLCHZIFX

pith:2021:ZLCHZIFX6FX565QRNIPVNVRWLA

not attested not anchored not stored refs pending

Interpretable Self-supervised Multi-task Learning for COVID-19 Information Retrieval and Extraction

Nima Ebadi, Peyman Najafirad

arxiv:2106.08252 v1 · 2021-06-15 · cs.IR · 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{ZLCHZIFX6FX565QRNIPVNVRWLA}

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	2026-07-05T02:49:38.785538Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cac47ca0b7f16fdf76116a1f56d636582a12ebb42f4733015525a97b608a08f4

Aliases

arxiv: 2106.08252 · arxiv_version: 2106.08252v1 · doi: 10.48550/arxiv.2106.08252 · pith_short_12: ZLCHZIFX6FX5 · pith_short_16: ZLCHZIFX6FX565QR · pith_short_8: ZLCHZIFX

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/ZLCHZIFX6FX565QRNIPVNVRWLA \
  | 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: cac47ca0b7f16fdf76116a1f56d636582a12ebb42f4733015525a97b608a08f4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "25614c3f64290ab9c39b24e948bd90fb2706d8c74aa8c673c1543d06ed12d5b2",
    "cross_cats_sorted": [
      "cs.CL"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.IR",
    "submitted_at": "2021-06-15T16:01:44Z",
    "title_canon_sha256": "f7e4776ed6dd95ef7f01c0a04c5f11deb2c0c1d6167840b72854d6bdc57fa91d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2106.08252",
    "kind": "arxiv",
    "version": 1
  }
}