Pith Number

pith:5HSIV27V

pith:2005:5HSIV27VDMA37IG3BQCFX6K4LY

not attested not anchored not stored refs pending

Two-way quantum communication channels

Andrew M. Childs, Debbie W. Leung, Hoi-Kwong Lo

arxiv:quant-ph/0506039 v1 · 2005-06-05 · 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{5HSIV27VDMA37IG3BQCFX6K4LY}

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	2026-05-18T02:35:06.829795Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e9e48aebf51b01bfa0db0c045bf95c5e1af4f5cf9429da22526329fba53e60d2

Aliases

arxiv: quant-ph/0506039 · arxiv_version: quant-ph/0506039v1 · doi: 10.48550/arxiv.quant-ph/0506039 · pith_short_12: 5HSIV27VDMA3 · pith_short_16: 5HSIV27VDMA37IG3 · pith_short_8: 5HSIV27V

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/5HSIV27VDMA37IG3BQCFX6K4LY \
  | 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: e9e48aebf51b01bfa0db0c045bf95c5e1af4f5cf9429da22526329fba53e60d2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f34b29476800098cfba577c20f8bb593a308bc99c9058a24c6cc70691058a0c8",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "quant-ph",
    "submitted_at": "2005-06-05T19:10:59Z",
    "title_canon_sha256": "3699d3da2f9fbcc0c43788ea3f08ddb4b1aacdaf316316837a22471ac72ed88e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "quant-ph/0506039",
    "kind": "arxiv",
    "version": 1
  }
}