Pith Number

pith:XMHUWNHR

pith:2025:XMHUWNHR7FIDBRQVYTJLPPJD5L

not attested not anchored not stored refs pending

Measurement and preparation protocols for quantum field theory on curved spacetimes

Christopher J. Fewster

arxiv:2508.21426 v1 · 2025-08-29 · gr-qc

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XMHUWNHR7FIDBRQVYTJLPPJD5L}

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	2026-07-05T12:01:34.645791Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bb0f4b34f1f95030c615c4d2b7bd23eaf886c24e5efffd03736f99d8c2000344

Aliases

arxiv: 2508.21426 · arxiv_version: 2508.21426v1 · doi: 10.48550/arxiv.2508.21426 · pith_short_12: XMHUWNHR7FID · pith_short_16: XMHUWNHR7FIDBRQV · pith_short_8: XMHUWNHR

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/XMHUWNHR7FIDBRQVYTJLPPJD5L \
  | 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: bb0f4b34f1f95030c615c4d2b7bd23eaf886c24e5efffd03736f99d8c2000344

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9d46f13817ebd217a8835f907bfe283fdd0a679b644ad08aff3175b32616a769",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2025-08-29T08:55:45Z",
    "title_canon_sha256": "7c6a2d4d4c9015f899bb36d688e9d302ab0f747c98246cba6f35475108d64723"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2508.21426",
    "kind": "arxiv",
    "version": 1
  }
}