Pith Number

pith:JHCF5DBV

pith:2001:JHCF5DBVIJNB2USYJ5VF34RQ3A

not attested not anchored not stored refs pending

Master Equation for Retrodiction of Quantum Communication Signals

David T. Pegg, John Jeffers, Ottavia Jedrkiewicz, Stephen M. Barnett

arxiv:quant-ph/0107139 v1 · 2001-07-27 · 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{JHCF5DBVIJNB2USYJ5VF34RQ3A}

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	2026-05-18T01:05:04.881298Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

49c45e8c35425a1d52584f6a5df230d8180279d29d77a0aa992955f24acd5cfb

Aliases

arxiv: quant-ph/0107139 · arxiv_version: quant-ph/0107139v1 · doi: 10.48550/arxiv.quant-ph/0107139 · pith_short_12: JHCF5DBVIJNB · pith_short_16: JHCF5DBVIJNB2USY · pith_short_8: JHCF5DBV

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/JHCF5DBVIJNB2USYJ5VF34RQ3A \
  | 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: 49c45e8c35425a1d52584f6a5df230d8180279d29d77a0aa992955f24acd5cfb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "217155e02fa95b6466853982449c497c57397bf5a48eaa498a76e62047ef4321",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "quant-ph",
    "submitted_at": "2001-07-27T14:19:35Z",
    "title_canon_sha256": "de96fcca6e6af7599788efcbb7bb4eb882a5a54f44cb249eea609377b145958f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "quant-ph/0107139",
    "kind": "arxiv",
    "version": 1
  }
}