Pith Number

pith:AKQHKD4R

pith:2018:AKQHKD4RDR7FP6MHKD3WDVLECS

not attested not anchored not stored refs pending

Dualities and Twins: Reflections on Hapgood

Adrian Kent (Centre for Quantum Information, DAMTP, Foundations, Perimeter Institute for Theoretical of Physics), U.K., University of Cambridge

arxiv:1807.01314 v1 · 2018-06-25 · physics.pop-ph · 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{AKQHKD4RDR7FP6MHKD3WDVLECS}

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	2026-05-18T00:11:44.652717Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

02a0750f911c7e57f98750f761d56414a5bc0365449606a14614901d37d82727

Aliases

arxiv: 1807.01314 · arxiv_version: 1807.01314v1 · doi: 10.48550/arxiv.1807.01314 · pith_short_12: AKQHKD4RDR7F · pith_short_16: AKQHKD4RDR7FP6MH · pith_short_8: AKQHKD4R

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/AKQHKD4RDR7FP6MHKD3WDVLECS \
  | 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: 02a0750f911c7e57f98750f761d56414a5bc0365449606a14614901d37d82727

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9c1ad06587ed216a7c589bcdea5cf1a26de9dabd2f722aa1d569c2ce47842374",
    "cross_cats_sorted": [
      "quant-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.pop-ph",
    "submitted_at": "2018-06-25T09:00:21Z",
    "title_canon_sha256": "e1ec70796e42b8bcf6925f8bb3a7f065b19ae214311a20e9023a9a357ca7c3c9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.01314",
    "kind": "arxiv",
    "version": 1
  }
}