Pith Number

pith:BZ6QWJR4

pith:2011:BZ6QWJR4HMN2YZVCOGGBXCOWTJ

not attested not anchored not stored refs pending

Enhanced lifetime of positronium atoms via collective radiative effects

Christoph H. Keitel, Karen Z. Hatsagortsyan, Mihai Macovei, Ni Cui

arxiv:1112.1621 v1 · 2011-12-07 · quant-ph · physics.atom-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{BZ6QWJR4HMN2YZVCOGGBXCOWTJ}

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	2026-05-18T03:53:31.588275Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0e7d0b263c3b1bac66a2718c1b89d69a78c9917c4d88009b22fff40a0658f7d2

Aliases

arxiv: 1112.1621 · arxiv_version: 1112.1621v1 · doi: 10.48550/arxiv.1112.1621 · pith_short_12: BZ6QWJR4HMN2 · pith_short_16: BZ6QWJR4HMN2YZVC · pith_short_8: BZ6QWJR4

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/BZ6QWJR4HMN2YZVCOGGBXCOWTJ \
  | 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: 0e7d0b263c3b1bac66a2718c1b89d69a78c9917c4d88009b22fff40a0658f7d2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ca48175e9d5eee65227cd2cf8aca4d384dd9fb191a30cbedbee1e1c124aa3098",
    "cross_cats_sorted": [
      "physics.atom-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2011-12-07T16:50:49Z",
    "title_canon_sha256": "0ca10073b60228ef3fad3092a854dd686483f3e863d72419c0ab24654ffdf1cd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1112.1621",
    "kind": "arxiv",
    "version": 1
  }
}