Pith Number

pith:F5R6DA7G

pith:2018:F5R6DA7GL5VROOO57MATWWQD57

not attested not anchored not stored refs pending

Measuring the quantum state of a photon pair entangled in frequency and time

Alex O.C. Davis, Brian J. Smith, Valerian Thiel

arxiv:1809.03727 v1 · 2018-09-11 · 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{F5R6DA7GL5VROOO57MATWWQD57}

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	2026-05-18T00:05:59.995033Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2f63e183e65f6b1739ddfb013b5a03efdc1f440d58140cf96966d9987ac5b6e2

Aliases

arxiv: 1809.03727 · arxiv_version: 1809.03727v1 · doi: 10.48550/arxiv.1809.03727 · pith_short_12: F5R6DA7GL5VR · pith_short_16: F5R6DA7GL5VROOO5 · pith_short_8: F5R6DA7G

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/F5R6DA7GL5VROOO57MATWWQD57 \
  | 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: 2f63e183e65f6b1739ddfb013b5a03efdc1f440d58140cf96966d9987ac5b6e2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9350353fc69b7cc4482640f81b3d40f9cea0db6dd1989f40852918fc30ea7687",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2018-09-11T08:20:28Z",
    "title_canon_sha256": "df458b036c3cae77be94f57cba4daeb26cf0bdb928664495cb3c58d7342b3321"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1809.03727",
    "kind": "arxiv",
    "version": 1
  }
}