Pith Number

pith:OSDZLNWE

pith:2019:OSDZLNWEFJRGL4TAZG3IZSMYJI

not attested not anchored not stored refs pending

One-out-of-$m$ spacetime-constrained oblivious transfer

Dami\'an Pital\'ua-Garc\'ia

arxiv:1907.02475 v1 · 2019-07-04 · quant-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OSDZLNWEFJRGL4TAZG3IZSMYJI}

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	2026-05-17T23:41:28.477132Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

748795b6c42a6265f260c9b68cc9984a16268ad5c6cde71e7b6005caca8baace

Aliases

arxiv: 1907.02475 · arxiv_version: 1907.02475v1 · doi: 10.48550/arxiv.1907.02475 · pith_short_12: OSDZLNWEFJRG · pith_short_16: OSDZLNWEFJRGL4TA · pith_short_8: OSDZLNWE

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/OSDZLNWEFJRGL4TAZG3IZSMYJI \
  | 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: 748795b6c42a6265f260c9b68cc9984a16268ad5c6cde71e7b6005caca8baace

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fb4d5395665575f398de734fb93efd53251237f4987826c9a7d5f68f059ec3ed",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2019-07-04T16:05:42Z",
    "title_canon_sha256": "b8287509c31f1b62724d94fa36449cbdfc085445de23a8674f059d995a210294"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1907.02475",
    "kind": "arxiv",
    "version": 1
  }
}