Pith Number

pith:SKL66TKA

pith:2015:SKL66TKA2OTH5KAKKFZQJ7JRHU

not attested not anchored not stored refs pending

How essential are unstructured clinical narratives and information fusion to clinical trial recruitment?

Albert M. Lai, Eric Fosler-Lussier, James L. Chen, Preethi Raghavan

arxiv:1502.04049 v1 · 2015-02-13 · cs.CY · cs.AI · 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{SKL66TKA2OTH5KAKKFZQJ7JRHU}

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	2026-05-18T02:27:00.389965Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9297ef4d40d3a67ea80a517304fd313d3ae08bf5adaa8eba4a5f2f57c09e535e

Aliases

arxiv: 1502.04049 · arxiv_version: 1502.04049v1 · doi: 10.48550/arxiv.1502.04049 · pith_short_12: SKL66TKA2OTH · pith_short_16: SKL66TKA2OTH5KAK · pith_short_8: SKL66TKA

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/SKL66TKA2OTH5KAKKFZQJ7JRHU \
  | 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: 9297ef4d40d3a67ea80a517304fd313d3ae08bf5adaa8eba4a5f2f57c09e535e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b6bad691b62d886a18257f9dcdc4f5e4d59f25025629da3bab82c648cfdcc3df",
    "cross_cats_sorted": [
      "cs.AI",
      "cs.CL"
    ],
    "license": "http://creativecommons.org/licenses/by/3.0/",
    "primary_cat": "cs.CY",
    "submitted_at": "2015-02-13T16:28:40Z",
    "title_canon_sha256": "1796f020cd7140e88bfe6e2eb350ee473858db68a4a461ae36157707b9a8c10d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1502.04049",
    "kind": "arxiv",
    "version": 1
  }
}