Pith Number

pith:BFEGNYBJ

pith:2017:BFEGNYBJFXG74L2CWNARF7L2AJ

not attested not anchored not stored refs pending

Quantum Stopwatch: How To Store Time in a Quantum Memory

Giulio Chiribella, Masahito Hayashi, Yuxiang Yang

arxiv:1703.05876 v5 · 2017-03-17 · 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{BFEGNYBJFXG74L2CWNARF7L2AJ}

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	2026-05-17T23:55:30.019618Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

094866e0292dcdfe2f42b34112fd7a024b952424fadaf38f43d54ac36107d99b

Aliases

arxiv: 1703.05876 · arxiv_version: 1703.05876v5 · doi: 10.48550/arxiv.1703.05876 · pith_short_12: BFEGNYBJFXG7 · pith_short_16: BFEGNYBJFXG74L2C · pith_short_8: BFEGNYBJ

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/BFEGNYBJFXG74L2CWNARF7L2AJ \
  | 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: 094866e0292dcdfe2f42b34112fd7a024b952424fadaf38f43d54ac36107d99b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "40506b2cd43e4969611e44d11f032516fdd2e0f826205dc17899c22bdefae9ea",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2017-03-17T03:27:31Z",
    "title_canon_sha256": "ec54a9a5bdf35e641498227245b62063805729321e13d31d62642cb95f70b979"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1703.05876",
    "kind": "arxiv",
    "version": 5
  }
}