Pith Number

pith:ODCAK3XM

pith:2017:ODCAK3XMEGTN2VVZ3J4Q6UMHRL

not attested not anchored not stored refs pending

Over the horizon: distinguishing the Schwarzschild spacetime and the $\mathbb{RP}^3$ spacetime using an Unruh-DeWitt detector

Eduardo Martin-Martinez, Keith K. Ng, Robert B. Mann

arxiv:1706.08978 v1 · 2017-06-27 · 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{ODCAK3XMEGTN2VVZ3J4Q6UMHRL}

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	2026-05-18T00:32:42.501141Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

70c4056eec21a6dd56b9da790f51878ac7e026b490a2beb89fb5c684a50b0caa

Aliases

arxiv: 1706.08978 · arxiv_version: 1706.08978v1 · doi: 10.48550/arxiv.1706.08978 · pith_short_12: ODCAK3XMEGTN · pith_short_16: ODCAK3XMEGTN2VVZ · pith_short_8: ODCAK3XM

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/ODCAK3XMEGTN2VVZ3J4Q6UMHRL \
  | 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: 70c4056eec21a6dd56b9da790f51878ac7e026b490a2beb89fb5c684a50b0caa

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "83026fc60f522836301b87f0a541acb632dbb3d1b6041febe02ab44e5d609a1f",
    "cross_cats_sorted": [
      "gr-qc",
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2017-06-27T18:00:06Z",
    "title_canon_sha256": "c54b5d02bb45ea3416b368b6bed62490a0e18636b8191dc9bfdeb34179f95609"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1706.08978",
    "kind": "arxiv",
    "version": 1
  }
}