Pith Number

pith:7EML5RUN

pith:2015:7EML5RUNUEFM6U5CENKQ6B676S

not attested not anchored not stored refs pending

How far can one send a photon?

Nicolas Gisin

arxiv:1508.00351 v2 · 2015-08-03 · 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{7EML5RUNUEFM6U5CENKQ6B676S}

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	2026-05-18T00:10:19.765973Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f918bec68da10acf53a223550f07dff4a31e6e7691a642af6593b3a6a5aaf813

Aliases

arxiv: 1508.00351 · arxiv_version: 1508.00351v2 · doi: 10.48550/arxiv.1508.00351 · pith_short_12: 7EML5RUNUEFM · pith_short_16: 7EML5RUNUEFM6U5C · pith_short_8: 7EML5RUN

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/7EML5RUNUEFM6U5CENKQ6B676S \
  | 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: f918bec68da10acf53a223550f07dff4a31e6e7691a642af6593b3a6a5aaf813

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8f9021d71ec0cddf93e674f0deb7d86e742372869469346ff014dfce05671723",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2015-08-03T09:10:31Z",
    "title_canon_sha256": "9d81bca23cc71573e45001f1c77406dd4d66fe1b593ee82637b6b02979c88131"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1508.00351",
    "kind": "arxiv",
    "version": 2
  }
}