Pith Number

pith:SERFRMKD

pith:2017:SERFRMKDQK2B22YEOKDP4ZTAJ7

not attested not anchored not stored refs pending

Twelve years before the quantum no-cloning theorem

Juan Ortigoso

arxiv:1707.06910 v2 · 2017-07-21 · physics.hist-ph · 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{SERFRMKDQK2B22YEOKDP4ZTAJ7}

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	2026-05-18T00:22:46.342599Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

912258b14382b41d6b047286fe66604fe2e9133f878d7120fb2b9d13815d2f52

Aliases

arxiv: 1707.06910 · arxiv_version: 1707.06910v2 · doi: 10.48550/arxiv.1707.06910 · pith_short_12: SERFRMKDQK2B · pith_short_16: SERFRMKDQK2B22YE · pith_short_8: SERFRMKD

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/SERFRMKDQK2B22YEOKDP4ZTAJ7 \
  | 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: 912258b14382b41d6b047286fe66604fe2e9133f878d7120fb2b9d13815d2f52

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cbf6c2302a1552a90f12f36e598ce8867945c99c7300df9f776adf7d6a543cf5",
    "cross_cats_sorted": [
      "quant-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.hist-ph",
    "submitted_at": "2017-07-21T14:20:00Z",
    "title_canon_sha256": "c65f2ea2f4b2248b65e46f535659de08a5a152e1fbe046e62ee83414cb36f098"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1707.06910",
    "kind": "arxiv",
    "version": 2
  }
}