Pith Number

pith:UFBBG2Y2

pith:2019:UFBBG2Y2ZZI45RMRLR4TK7XERW

not attested not anchored not stored refs pending

Strategyproof Mechanism for Two Heterogeneous Facilities with Constant Approximation Ratio

Jialin Zhang, Minming Li, Pinyan Lu, Yuhao Yao

arxiv:1907.08918 v1 · 2019-07-21 · cs.DS · cs.GT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UFBBG2Y2ZZI45RMRLR4TK7XERW}

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	2026-05-17T23:40:02.735777Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a142136b1ace51cec5915c79357ee48d8c99b843a7d5146950b00760cbf80ed4

Aliases

arxiv: 1907.08918 · arxiv_version: 1907.08918v1 · doi: 10.48550/arxiv.1907.08918 · pith_short_12: UFBBG2Y2ZZI4 · pith_short_16: UFBBG2Y2ZZI45RMR · pith_short_8: UFBBG2Y2

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/UFBBG2Y2ZZI45RMRLR4TK7XERW \
  | 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: a142136b1ace51cec5915c79357ee48d8c99b843a7d5146950b00760cbf80ed4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a27ae5a7f34d131a70e5b7b4abb3559953f70137063e7a0368a6b7b8a84ed3b7",
    "cross_cats_sorted": [
      "cs.GT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2019-07-21T05:55:46Z",
    "title_canon_sha256": "920e6dbc4df4d562e298571f5c403e03a054b99e3f2fcb94109a794bb67b37e0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1907.08918",
    "kind": "arxiv",
    "version": 1
  }
}