Pith Number

pith:M5U3PEU5

pith:2014:M5U3PEU5BHTNT44CAEBKQC3YM2

not attested not anchored not stored refs pending

Instantaneous Quantum Channel Estimation during Quantum Information Processing

Yuichiro Fujiwara

arxiv:1405.6267 v1 · 2014-05-24 · quant-ph · cs.IT · math.IT

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{M5U3PEU5BHTNT44CAEBKQC3YM2}

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	2026-05-18T02:51:07.645666Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6769b7929d09e6d9f3820102a80b786694c8a99a0f28f5a48e9f5063619e2566

Aliases

arxiv: 1405.6267 · arxiv_version: 1405.6267v1 · doi: 10.48550/arxiv.1405.6267 · pith_short_12: M5U3PEU5BHTN · pith_short_16: M5U3PEU5BHTNT44C · pith_short_8: M5U3PEU5

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/M5U3PEU5BHTNT44CAEBKQC3YM2 \
  | 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: 6769b7929d09e6d9f3820102a80b786694c8a99a0f28f5a48e9f5063619e2566

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "51dab05802ded042a115c154c286304da5c33f1a79b07e76df34d8d0eff0729a",
    "cross_cats_sorted": [
      "cs.IT",
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2014-05-24T04:22:02Z",
    "title_canon_sha256": "68fc80c14ce2d66582adb00b0dde41657a3014e9b41f7c42b04fb3e4c8100e27"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1405.6267",
    "kind": "arxiv",
    "version": 1
  }
}