Pith Number

pith:5QWVOAVO

pith:2020:5QWVOAVO4CLXCDZJIV2MYIRVVM

not attested not anchored not stored refs pending

Spin qudit tomography and state reconstruction error

Ana Maria Rey, Diego Barberena, Michael A. Perlin

arxiv:2012.06464 v2 · 2020-12-11 · 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{5QWVOAVO4CLXCDZJIV2MYIRVVM}

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	2026-07-05T03:42:38.718746Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ec2d5702aee097710f294574cc2235ab1823970fa22992bfea934d0f5e598607

Aliases

arxiv: 2012.06464 · arxiv_version: 2012.06464v2 · doi: 10.48550/arxiv.2012.06464 · pith_short_12: 5QWVOAVO4CLX · pith_short_16: 5QWVOAVO4CLXCDZJ · pith_short_8: 5QWVOAVO

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/5QWVOAVO4CLXCDZJIV2MYIRVVM \
  | 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: ec2d5702aee097710f294574cc2235ab1823970fa22992bfea934d0f5e598607

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "77baa220fed33b3720e56d8d00847e5e0e6ecfbf552ed3bceb306ea4ecd22da1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2020-12-11T16:35:09Z",
    "title_canon_sha256": "dd6529f9164e3251d72f8b0aaac3d2115cf476c0ba7a2e15c902e419a0c7a345"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2012.06464",
    "kind": "arxiv",
    "version": 2
  }
}