Pith Number

pith:R6R4OMSY

pith:2026:R6R4OMSYRN6KZVZKCFQOMFIZWJ

not attested not anchored not stored refs pending

Estimation of a sparse multi-qubit Hamiltonian via compressed sensing

Juntao Tu, Shuixin Xiao, Shuming Cheng, Yuanlong Wang, Zhibo Hou

arxiv:2607.04669 v1 · 2026-07-06 · 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{R6R4OMSYRN6KZVZKCFQOMFIZWJ}

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	2026-07-07T02:19:30.740532Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8fa3c732588b7cacd72a1160e61519b258dcb7de2cb603373ae78be09f378e7e

Aliases

arxiv: 2607.04669 · arxiv_version: 2607.04669v1 · doi: 10.48550/arxiv.2607.04669 · pith_short_12: R6R4OMSYRN6K · pith_short_16: R6R4OMSYRN6KZVZK · pith_short_8: R6R4OMSY

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/R6R4OMSYRN6KZVZKCFQOMFIZWJ \
  | 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: 8fa3c732588b7cacd72a1160e61519b258dcb7de2cb603373ae78be09f378e7e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a7ff448a24bde1ac3d8e075a5b7677b2b887608e073c0b33285c695ef4411a4f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2026-07-06T04:51:30Z",
    "title_canon_sha256": "65ce0dc96a6dba507fb6d6bd7b515fd5181fd44b2499fa37f995ff9a5ff9237e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.04669",
    "kind": "arxiv",
    "version": 1
  }
}