Pith Number

pith:UAQXUABT

pith:2019:UAQXUABTY4ORK73CLKIZWK3HEM

not attested not anchored not stored refs pending

Impossible measurements revisited

Graham Kells, Ian Jubb, Leron Borsten

arxiv:1912.06141 v3 · 2019-12-12 · quant-ph · gr-qc · hep-th

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UAQXUABTY4ORK73CLKIZWK3HEM}

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.

Cited by

2 papers in Pith

Rethinking quantum information in gravity and fields

Causal measurement in quantum field theory: spacetime

Receipt and verification

First computed	2026-07-05T03:22:56.822879Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a0217a0033c71d157f625a919b2b67230db142cbf1c91503b27e37be87d4ade5

Aliases

arxiv: 1912.06141 · arxiv_version: 1912.06141v3 · doi: 10.48550/arxiv.1912.06141 · pith_short_12: UAQXUABTY4OR · pith_short_16: UAQXUABTY4ORK73C · pith_short_8: UAQXUABT

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/UAQXUABTY4ORK73CLKIZWK3HEM \
  | 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: a0217a0033c71d157f625a919b2b67230db142cbf1c91503b27e37be87d4ade5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "aa8b275ad4036de3dba93b53eec7f5ce25d4ae9b123dcec1b2b7b6468e36aad8",
    "cross_cats_sorted": [
      "gr-qc",
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2019-12-12T19:00:01Z",
    "title_canon_sha256": "b863711602084c24be08a5a05c8324e14fc56e57bd6baf44566264af0463294d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1912.06141",
    "kind": "arxiv",
    "version": 3
  }
}