Pith Number

pith:2QB75W4D

pith:2013:2QB75W4DVG4NIH4K4PBZN4MQP2

not attested not anchored not stored refs pending

Quantum instruments as a foundation for both states and observables

Andrew N. Jordan, Justin Dressel

arxiv:1305.2816 v1 · 2013-05-13 · 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{2QB75W4DVG4NIH4K4PBZN4MQP2}

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	2026-05-18T03:16:16.439497Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d403fedb83a9b8d41f8ae3c396f1907ea8a02869e92751d41ea2f50718cc9068

Aliases

arxiv: 1305.2816 · arxiv_version: 1305.2816v1 · doi: 10.48550/arxiv.1305.2816 · pith_short_12: 2QB75W4DVG4N · pith_short_16: 2QB75W4DVG4NIH4K · pith_short_8: 2QB75W4D

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/2QB75W4DVG4NIH4K4PBZN4MQP2 \
  | 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: d403fedb83a9b8d41f8ae3c396f1907ea8a02869e92751d41ea2f50718cc9068

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dd43c43631798bd3a83730429fe5c88e360cf9fc2a5bb67f2e884854bf48fa67",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2013-05-13T15:48:39Z",
    "title_canon_sha256": "2134af7f480402eb5fa9fc66cf6ddfa7f553e47d64a939c672cc6ed2e8ec85d1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1305.2816",
    "kind": "arxiv",
    "version": 1
  }
}