Pith Number

pith:PFQDMXGL

pith:2013:PFQDMXGLKKT6G7LMRYJDVPYLXS

not attested not anchored not stored refs pending

Testing randomness with photons

Jeremy L. O'Brien, Jonathan C. F. Matthews, Peter S. Turner, Rebecca Whittaker

arxiv:1312.1940 v1 · 2013-12-06 · 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{PFQDMXGLKKT6G7LMRYJDVPYLXS}

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	2026-05-18T00:10:57.487041Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7960365ccb52a7e37d6c8e123abf0bbc9bca9f743dc9f0ae2a16e931da3c9b7f

Aliases

arxiv: 1312.1940 · arxiv_version: 1312.1940v1 · doi: 10.48550/arxiv.1312.1940 · pith_short_12: PFQDMXGLKKT6 · pith_short_16: PFQDMXGLKKT6G7LM · pith_short_8: PFQDMXGL

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/PFQDMXGLKKT6G7LMRYJDVPYLXS \
  | 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: 7960365ccb52a7e37d6c8e123abf0bbc9bca9f743dc9f0ae2a16e931da3c9b7f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8e3677f07fb00672eac26cfbd6a7550d3e670c64e2f378914254beb1b49f55c2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2013-12-06T17:37:15Z",
    "title_canon_sha256": "a020e0804bd371766fbeda62d5de071e5c2a910b583f300e05f0a0fd9e3cfc3c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1312.1940",
    "kind": "arxiv",
    "version": 1
  }
}