Pith Number

pith:MUMEGKC7

pith:2020:MUMEGKC7JHQHTL7THTPFNMYET7

not attested not anchored not stored refs pending

Pinned QMA: The power of fixing a few qubits in proofs

Daniel Nagaj, Dominik Hangleiter, Jens Eisert, Martin Schwarz

arxiv:2001.03636 v2 · 2020-01-10 · 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{MUMEGKC7JHQHTL7THTPFNMYET7}

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	2026-07-05T02:05:38.605018Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

651843285f49e079aff33cde56b3049fe8f839c8f4b0b4d4a8e6e80905413470

Aliases

arxiv: 2001.03636 · arxiv_version: 2001.03636v2 · doi: 10.48550/arxiv.2001.03636 · pith_short_12: MUMEGKC7JHQH · pith_short_16: MUMEGKC7JHQHTL7T · pith_short_8: MUMEGKC7

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/MUMEGKC7JHQHTL7THTPFNMYET7 \
  | 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: 651843285f49e079aff33cde56b3049fe8f839c8f4b0b4d4a8e6e80905413470

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e71cc943b22a72beb2047f0e4c6492dcb5c61dc449e7ad722f6d812276ef1432",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2020-01-10T19:20:29Z",
    "title_canon_sha256": "11c02ba17d2e69ba3aab3b868ce0fcbbcb5a990a9ff6f466da070864fd0ccbe6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2001.03636",
    "kind": "arxiv",
    "version": 2
  }
}