Pith Number

pith:7PICTII4

pith:2017:7PICTII4EPFICNQADZS7K2WPMM

not attested not anchored not stored refs pending

Reply to L.Vaidman's comment on "Asking photons where they have been in plain language"

D. Sokolovski

arxiv:1704.02172 v1 · 2017-04-07 · 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{7PICTII4EPFICNQADZS7K2WPMM}

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	2026-05-18T00:46:50.533639Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fbd029a11c23ca8136001e65f56acf6335cb2f3c441b79eef6151bedcf979216

Aliases

arxiv: 1704.02172 · arxiv_version: 1704.02172v1 · doi: 10.48550/arxiv.1704.02172 · pith_short_12: 7PICTII4EPFI · pith_short_16: 7PICTII4EPFICNQA · pith_short_8: 7PICTII4

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/7PICTII4EPFICNQADZS7K2WPMM \
  | 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: fbd029a11c23ca8136001e65f56acf6335cb2f3c441b79eef6151bedcf979216

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "28432b0b5f1b0c72cc138305340fbb1d91729bf124a6da97b78cdbb6b491c708",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2017-04-07T10:31:34Z",
    "title_canon_sha256": "73610962301536de2dcca9a2dfb6602362d03af98f5eff2fbbe37d2b02fff0ea"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1704.02172",
    "kind": "arxiv",
    "version": 1
  }
}