Pith Number

pith:IJ4EW3UB

pith:2003:IJ4EW3UB2VQZX6TY6MR3FR3JPL

not attested not anchored not stored refs pending

Optical telecom networks as weak measurements with post-selection

Nicolas Brunner

arxiv:quant-ph/0309055 v1 · 2003-09-05 · 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{IJ4EW3UB2VQZX6TY6MR3FR3JPL}

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	2026-07-04T14:46:24.185106Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

42784b6e81d5619bfa78f323b2c7697ad79489efe93253cc1a31d52abe1a6c77

Aliases

arxiv: quant-ph/0309055 · arxiv_version: quant-ph/0309055v1 · doi: 10.48550/arxiv.quant-ph/0309055 · pith_short_12: IJ4EW3UB2VQZ · pith_short_16: IJ4EW3UB2VQZX6TY · pith_short_8: IJ4EW3UB

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/IJ4EW3UB2VQZX6TY6MR3FR3JPL \
  | 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: 42784b6e81d5619bfa78f323b2c7697ad79489efe93253cc1a31d52abe1a6c77

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "136ed3bf2900315889f8a5fe22855df6ae37d75b86f5513b9ef6d6d63b269237",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "quant-ph",
    "submitted_at": "2003-09-05T12:11:37Z",
    "title_canon_sha256": "edc3d3c243c6bace5eb4ee50e9999d341c0a209cd980ff6b461de5af3f9b28d4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "quant-ph/0309055",
    "kind": "arxiv",
    "version": 1
  }
}