Pith Number

pith:JVFI442Q

pith:2015:JVFI442QRGUGEI7DM7PTUEPAFD

not attested not anchored not stored refs pending

Quantum Cloning using Protective Measurement

C. S. Sudheer Kumar

arxiv:1503.04547 v2 · 2015-03-16 · 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{JVFI442QRGUGEI7DM7PTUEPAFD}

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	2026-05-18T02:18:03.431024Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4d4a8e735089a86223e367df3a11e028ff3ba9b22ae9057c9d49cbe4e0d4a12d

Aliases

arxiv: 1503.04547 · arxiv_version: 1503.04547v2 · doi: 10.48550/arxiv.1503.04547 · pith_short_12: JVFI442QRGUG · pith_short_16: JVFI442QRGUGEI7D · pith_short_8: JVFI442Q

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/JVFI442QRGUGEI7DM7PTUEPAFD \
  | 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: 4d4a8e735089a86223e367df3a11e028ff3ba9b22ae9057c9d49cbe4e0d4a12d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9da21265e6470dbee609e9386d02fcfde46caa4f1032fee808030842f192a881",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2015-03-16T07:26:33Z",
    "title_canon_sha256": "97af7885dee02ed1f9b69008bccff36aefae875c2207065ee7808226cbac890d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1503.04547",
    "kind": "arxiv",
    "version": 2
  }
}