Pith Number

pith:2WXJROQ5

pith:2011:2WXJROQ52GXXK5234TR5DPATKZ

not attested not anchored not stored refs pending

Estimation of Coupling Constants of a Three-Spin Chain: Case Study of Hamiltonian Tomography with NMR

Daniel Burgarth, Elham Hosseini Lapasar, Koji Maruyama, Mikio Nakahara, Takeji Takui, Yasushi Kondo

arxiv:1111.1381 v1 · 2011-11-06 · 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{2WXJROQ52GXXK5234TR5DPATKZ}

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	2026-05-18T04:03:55.691572Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d5ae98ba1dd1af75775be4e3d1bc13565bd406678f4dfd85cc4c8dec3efb2103

Aliases

arxiv: 1111.1381 · arxiv_version: 1111.1381v1 · doi: 10.48550/arxiv.1111.1381 · pith_short_12: 2WXJROQ52GXX · pith_short_16: 2WXJROQ52GXXK523 · pith_short_8: 2WXJROQ5

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/2WXJROQ52GXXK5234TR5DPATKZ \
  | 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: d5ae98ba1dd1af75775be4e3d1bc13565bd406678f4dfd85cc4c8dec3efb2103

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "49c2673ea5c5264f0cc80880bb2ecfa95ecd39f725b95d10e9ff37fa718a322b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2011-11-06T07:41:49Z",
    "title_canon_sha256": "a27254d9a81f73ac9d5433f106ca087ab93034e92bc341960a3e61df3359a8c0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1111.1381",
    "kind": "arxiv",
    "version": 1
  }
}