Pith Number

pith:FZGPUQTD

pith:2021:FZGPUQTD77SUGPY3CAYA6UO2PM

not attested not anchored not stored refs pending

An Adaptive All-Pass Filter for Time-Varying Delay Estimation

Beth Jelfs, Christopher Gilliam, Kamran Ghorbani, Shuai Sun

arxiv:2101.02406 v1 · 2021-01-07 · 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{FZGPUQTD77SUGPY3CAYA6UO2PM}

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	2026-07-05T02:49:52.702264Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2e4cfa4263ffe5433f1b10300f51da7b17d0ba1832e194dfbe940c7fec3615cf

Aliases

arxiv: 2101.02406 · arxiv_version: 2101.02406v1 · doi: 10.48550/arxiv.2101.02406 · pith_short_12: FZGPUQTD77SU · pith_short_16: FZGPUQTD77SUGPY3 · pith_short_8: FZGPUQTD

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/FZGPUQTD77SUGPY3CAYA6UO2PM \
  | 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: 2e4cfa4263ffe5433f1b10300f51da7b17d0ba1832e194dfbe940c7fec3615cf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a8e992436d6cc4bf4a337aedc5f66b3bda5aa658ab8a52220eaa7d82fd2f85d0",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "eess.SP",
    "submitted_at": "2021-01-07T07:11:23Z",
    "title_canon_sha256": "f09a068522e7714c7eee780e1ebb9dd90e648f9b3c50e2894c5823f5c319abcb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2101.02406",
    "kind": "arxiv",
    "version": 1
  }
}