Pith Number

pith:2ORQ2B7R

pith:2016:2ORQ2B7R2VPZWQRTVHHSP5RUUT

not attested not anchored not stored refs pending

Quantum physics, fields and closed timelike curves: The D-CTC condition in quantum field theory

Juergen Tolksdorf, Rainer Verch

arxiv:1609.01496 v2 · 2016-09-06 · math-ph · gr-qc · hep-th · math.MP · 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{2ORQ2B7R2VPZWQRTVHHSP5RUUT}

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	2026-05-18T00:35:35.550717Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d3a30d07f1d55f9b4233a9cf27f634a4f5301b4fb9df816b39f8fa6c27ef0f00

Aliases

arxiv: 1609.01496 · arxiv_version: 1609.01496v2 · doi: 10.48550/arxiv.1609.01496 · pith_short_12: 2ORQ2B7R2VPZ · pith_short_16: 2ORQ2B7R2VPZWQRT · pith_short_8: 2ORQ2B7R

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/2ORQ2B7R2VPZWQRTVHHSP5RUUT \
  | 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: d3a30d07f1d55f9b4233a9cf27f634a4f5301b4fb9df816b39f8fa6c27ef0f00

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e18078d0eb437187d2edbcd68b9efbbfa25f5324cdf20036ca4975a9b869486c",
    "cross_cats_sorted": [
      "gr-qc",
      "hep-th",
      "math.MP",
      "quant-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math-ph",
    "submitted_at": "2016-09-06T11:35:13Z",
    "title_canon_sha256": "c72cbf08d13d673c2107ffafdc8ebaea6736725874b4199d762fa120dbacd4e6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1609.01496",
    "kind": "arxiv",
    "version": 2
  }
}