Pith Number

pith:XGW25UDS

pith:2019:XGW25UDSKX5ZIMSFLRH67EDMM2

not attested not anchored not stored refs pending

On optimal cloning and incompatibility

Arindam Mitra, Prabha Mandayam

arxiv:1908.04182 v2 · 2019-08-12 · 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{XGW25UDSKX5ZIMSFLRH67EDMM2}

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	2026-07-05T03:15:06.416278Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b9adaed07255fb9432455c4fef906c66b266e42b3076cfd657fc1d5be03ef1af

Aliases

arxiv: 1908.04182 · arxiv_version: 1908.04182v2 · doi: 10.48550/arxiv.1908.04182 · pith_short_12: XGW25UDSKX5Z · pith_short_16: XGW25UDSKX5ZIMSF · pith_short_8: XGW25UDS

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/XGW25UDSKX5ZIMSFLRH67EDMM2 \
  | 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: b9adaed07255fb9432455c4fef906c66b266e42b3076cfd657fc1d5be03ef1af

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b1cae31f0935aa9ce21b45e306739d0cee1ef50f3be45f8952fec32569f26c1c",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2019-08-12T14:48:07Z",
    "title_canon_sha256": "142be7e918e19ad4cd290c20e430f4978c39834091b1add7fdeff724d7f94a5e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.04182",
    "kind": "arxiv",
    "version": 2
  }
}