Pith Number

pith:MWPMWJYL

pith:2019:MWPMWJYLA2HIR2IGLZMNCKYDUM

not attested not anchored not stored refs pending

The Materials Science Procedural Text Corpus: Annotating Materials Synthesis Procedures with Shallow Semantic Structures

Andrew McCallum, Edward Kim, Elsa Olivetti, Emma Strubell, Haw-Shiuan Chang, Jeffrey Flanigan, Kevin Huang, Sheshera Mysore, Zach Jensen

arxiv:1905.06939 v2 · 2019-05-16 · cs.CL · 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{MWPMWJYLA2HIR2IGLZMNCKYDUM}

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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	2026-05-17T23:40:38.768561Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

659ecb270b068e88e9065e58d12b03a32c73e3bfe361aa27e85029dbf9378f56

Aliases

arxiv: 1905.06939 · arxiv_version: 1905.06939v2 · doi: 10.48550/arxiv.1905.06939 · pith_short_12: MWPMWJYLA2HI · pith_short_16: MWPMWJYLA2HIR2IG · pith_short_8: MWPMWJYL

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/MWPMWJYLA2HIR2IGLZMNCKYDUM \
  | 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: 659ecb270b068e88e9065e58d12b03a32c73e3bfe361aa27e85029dbf9378f56

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "710e116ce1e529e2426070f40142034f7bfd8b3c9d98f34ec576bdcb2a82c453",
    "cross_cats_sorted": [
      "cs.LG"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-sa/4.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2019-05-16T17:57:35Z",
    "title_canon_sha256": "d81564c78fb32731aee1e1e4bd7e5dd4e2ca7b84f8727d723e5b5d47da670cec"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1905.06939",
    "kind": "arxiv",
    "version": 2
  }
}