Pith Number

pith:HI7BWZ5N

pith:2005:HI7BWZ5NYVZRSA2IXJ3RAVH7IS

not attested not anchored not stored refs pending

Quantum Theory Looks at Time Travel

Daniel M. Greenberger, Karl Svozil

arxiv:quant-ph/0506027 v2 · 2005-06-03 · 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{HI7BWZ5NYVZRSA2IXJ3RAVH7IS}

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	2026-05-18T01:37:57.771254Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3a3e1b67adc573190348ba771054ff44a642c2b5198084edbcc02a8f28b1a09d

Aliases

arxiv: quant-ph/0506027 · arxiv_version: quant-ph/0506027v2 · doi: 10.48550/arxiv.quant-ph/0506027 · pith_short_12: HI7BWZ5NYVZR · pith_short_16: HI7BWZ5NYVZRSA2I · pith_short_8: HI7BWZ5N

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/HI7BWZ5NYVZRSA2IXJ3RAVH7IS \
  | 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: 3a3e1b67adc573190348ba771054ff44a642c2b5198084edbcc02a8f28b1a09d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "470b30170ac2d2b890810f0595a30dc4d9de5b8873a742434aee97c1ceed56d6",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "quant-ph",
    "submitted_at": "2005-06-03T08:03:19Z",
    "title_canon_sha256": "93a99ee9be4f1817c99b9e869deaba8b9e60f179a5602ab4d5d8667e6380ae06"
  },
  "schema_version": "1.0",
  "source": {
    "id": "quant-ph/0506027",
    "kind": "arxiv",
    "version": 2
  }
}