Pith Number

pith:4VMGQC2D

pith:2015:4VMGQC2DAH7LTME7XXKGZWRESY

not attested not anchored not stored refs pending

Protective Measurements: Probing Single Quantum Systems

Delhi), Hyderabad), JMI, N.D. Hari Dass (TIFR-TCIS, Tabish Qureshi (Center for Theoretical Physics

arxiv:1505.01591 v1 · 2015-05-07 · 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{4VMGQC2DAH7LTME7XXKGZWRESY}

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	2026-05-18T01:24:43.741257Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e558680b4301feb9b09fbdd46cda24960f6e19dd19d02b62448ca7efcd6e1b7c

Aliases

arxiv: 1505.01591 · arxiv_version: 1505.01591v1 · doi: 10.48550/arxiv.1505.01591 · pith_short_12: 4VMGQC2DAH7L · pith_short_16: 4VMGQC2DAH7LTME7 · pith_short_8: 4VMGQC2D

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/4VMGQC2DAH7LTME7XXKGZWRESY \
  | 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: e558680b4301feb9b09fbdd46cda24960f6e19dd19d02b62448ca7efcd6e1b7c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "88d950a83392f2185ebd9ec64a7820b03d7114b90eeec892fa9c3ecd0d8e9414",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2015-05-07T05:33:32Z",
    "title_canon_sha256": "6dcf880efaf7a6d9df41e920a733a8acec396c5b603ca5bbd4b8c9b27a7961f0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1505.01591",
    "kind": "arxiv",
    "version": 1
  }
}