Pith Number

pith:HHEK2BTC

pith:2015:HHEK2BTCA3ZEDOVV3O3FC3HXG4

not attested not anchored not stored refs pending

Tomography is necessary for universal entanglement detection with single-copy observables

Bei Zeng, Dawei Lu, Guilu Long, Jianxin Chen, Jonathan Baugh, Nengkun Yu, Raymond Laflamme, Tao Xin, Xinhua Peng, Zhengfeng Ji

arxiv:1511.00581 v1 · 2015-11-02 · 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{HHEK2BTCA3ZEDOVV3O3FC3HXG4}

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	2026-05-18T01:12:30.501552Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

39c8ad066206f241bab5dbb6516cf73719af8b291cc386a359667dc454073dbb

Aliases

arxiv: 1511.00581 · arxiv_version: 1511.00581v1 · doi: 10.48550/arxiv.1511.00581 · pith_short_12: HHEK2BTCA3ZE · pith_short_16: HHEK2BTCA3ZEDOVV · pith_short_8: HHEK2BTC

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/HHEK2BTCA3ZEDOVV3O3FC3HXG4 \
  | 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: 39c8ad066206f241bab5dbb6516cf73719af8b291cc386a359667dc454073dbb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "aa49d31207b27f29e84ce781422ef8a4aaa1c9e045530dd9e0523bc3ebb1e2f1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2015-11-02T16:54:01Z",
    "title_canon_sha256": "475ff3dfb09175c049bb18e8c01b71c7539f3d1a1063eeee0411ac3026eac9a8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1511.00581",
    "kind": "arxiv",
    "version": 1
  }
}