Pith Number

pith:DBYH6GZW

pith:2021:DBYH6GZWQIWUUJSAU34T3NCLKV

not attested not anchored not stored refs pending

High Accuracy and Low Complexity Frequency Offset Estimation Based on All-Phase FFT for M-QAM Coherent Optical Systems

Qian Li

arxiv:2105.10394 v1 · 2021-05-15 · eess.SP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DBYH6GZWQIWUUJSAU34T3NCLKV}

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	2026-07-05T02:42:10.975768Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

18707f1b36822d4a2640a6f93db44b5550d7412c873f613a42cd40f8fe5acfd7

Aliases

arxiv: 2105.10394 · arxiv_version: 2105.10394v1 · doi: 10.48550/arxiv.2105.10394 · pith_short_12: DBYH6GZWQIWU · pith_short_16: DBYH6GZWQIWUUJSA · pith_short_8: DBYH6GZW

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/DBYH6GZWQIWUUJSAU34T3NCLKV \
  | 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: 18707f1b36822d4a2640a6f93db44b5550d7412c873f613a42cd40f8fe5acfd7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bba13059e53dd66d6835a55577a23520d7d726582b5d762341e5a99445fc8554",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "eess.SP",
    "submitted_at": "2021-05-15T10:34:45Z",
    "title_canon_sha256": "32df70e53b67cd85a619ad9a1dba157533acef5f6da7d0287910f39b48f4263a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2105.10394",
    "kind": "arxiv",
    "version": 1
  }
}