Pith Number

pith:B6U2QKD4

pith:2021:B6U2QKD4QSXONTZLMTHUG22HNP

not attested not anchored not stored refs pending

SciCo: Hierarchical Cross-Document Coreference for Scientific Concepts

Arie Cattan, Daniel Weld, Doug Downey, Ido Dagan, Iz Beltagy, Sophie Johnson, Tom Hope

arxiv:2104.08809 v3 · 2021-04-18 · cs.CL · cs.IR · cs.LG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{B6U2QKD4QSXONTZLMTHUG22HNP}

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	2026-07-05T03:10:39.409445Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0fa9a8287c84aee6cf2b64cf436b476bed2c606dad29951e56375eec5ecff222

Aliases

arxiv: 2104.08809 · arxiv_version: 2104.08809v3 · doi: 10.48550/arxiv.2104.08809 · pith_short_12: B6U2QKD4QSXO · pith_short_16: B6U2QKD4QSXONTZL · pith_short_8: B6U2QKD4

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/B6U2QKD4QSXONTZLMTHUG22HNP \
  | 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: 0fa9a8287c84aee6cf2b64cf436b476bed2c606dad29951e56375eec5ecff222

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d4a164e61e7af0d57b52cce6e015bdbf5164d85d9d2ff38048265cdca62e0e6e",
    "cross_cats_sorted": [
      "cs.IR",
      "cs.LG"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2021-04-18T10:42:20Z",
    "title_canon_sha256": "a9737f2a44569590285d3cb61d15f5c109823a230c728b08a377ba6a6ab456b5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2104.08809",
    "kind": "arxiv",
    "version": 3
  }
}