Pith Number

pith:E5AH5IZS

pith:2019:E5AH5IZSPWKZS44XN6NQGPB7FL

not attested not anchored not stored refs pending

Core Semantic First: A Top-down Approach for AMR Parsing

Deng Cai, Wai Lam

arxiv:1909.04303 v2 · 2019-09-10 · cs.CL · cs.AI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{E5AH5IZSPWKZS44XN6NQGPB7FL}

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	2026-07-05T00:04:10.987017Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

27407ea3327d959973976f9b033c3f2ae07c5a1440bab3af129f109f33d70757

Aliases

arxiv: 1909.04303 · arxiv_version: 1909.04303v2 · doi: 10.48550/arxiv.1909.04303 · pith_short_12: E5AH5IZSPWKZ · pith_short_16: E5AH5IZSPWKZS44X · pith_short_8: E5AH5IZS

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/E5AH5IZSPWKZS44XN6NQGPB7FL \
  | 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: 27407ea3327d959973976f9b033c3f2ae07c5a1440bab3af129f109f33d70757

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "73d629f76fae33180d5a3fa15f1002578eb75aa0da8b918f00a377cf7f02865a",
    "cross_cats_sorted": [
      "cs.AI"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2019-09-10T05:51:12Z",
    "title_canon_sha256": "3144fd4fe967570581998ac340c675176aebf6326dea5c36b055db7d33ec74af"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1909.04303",
    "kind": "arxiv",
    "version": 2
  }
}