Pith Number

pith:XEL4TRN4

pith:2020:XEL4TRN4R7BD5TI3P2JEMSPU44

not attested not anchored not stored refs pending

Improving Policy-Constrained Kidney Exchange via Pre-Screening

Duncan C McElfresh, John P Dickerson, Michael Curry, Tuomas Sandholm

arxiv:2010.12069 v1 · 2020-10-22 · 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{XEL4TRN4R7BD5TI3P2JEMSPU44}

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	2026-07-05T01:45:33.374950Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b917c9c5bc8fc23ecd1b7e924649f4e70da2c3662e68481c8168940ecebe67b9

Aliases

arxiv: 2010.12069 · arxiv_version: 2010.12069v1 · doi: 10.48550/arxiv.2010.12069 · pith_short_12: XEL4TRN4R7BD · pith_short_16: XEL4TRN4R7BD5TI3 · pith_short_8: XEL4TRN4

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/XEL4TRN4R7BD5TI3P2JEMSPU44 \
  | 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: b917c9c5bc8fc23ecd1b7e924649f4e70da2c3662e68481c8168940ecebe67b9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "07e9a838e829e24fa6ba5c764d6c6a95c334b5612da26e7ea7c8acdef170db20",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.AI",
    "submitted_at": "2020-10-22T21:07:36Z",
    "title_canon_sha256": "49ac4ed47f41d58177ef355f25e4db2a78a2ad7960aa7b6ed437122b8e5fcef5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2010.12069",
    "kind": "arxiv",
    "version": 1
  }
}