Pith Number

pith:AF4JYDVN

pith:2015:AF4JYDVNXD2M2INGDNYV3KUG5S

not attested not anchored not stored refs pending

Single-Step Tunable Group Delay Phaser for Real-Time Spectrum Sniffing

Christophe Caloz, Qingfeng Zhang, Rui Wang, Tongfeng Guo, Yifan Chen

arxiv:1501.05750 v1 · 2015-01-23 · physics.optics

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{AF4JYDVNXD2M2INGDNYV3KUG5S}

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	2026-05-18T02:28:49.085926Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

01789c0eadb8f4cd21a61b715daa86ec8d78d81926c3545b14e59f07b2439b2f

Aliases

arxiv: 1501.05750 · arxiv_version: 1501.05750v1 · doi: 10.48550/arxiv.1501.05750 · pith_short_12: AF4JYDVNXD2M · pith_short_16: AF4JYDVNXD2M2ING · pith_short_8: AF4JYDVN

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/AF4JYDVNXD2M2INGDNYV3KUG5S \
  | 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: 01789c0eadb8f4cd21a61b715daa86ec8d78d81926c3545b14e59f07b2439b2f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f4e89297a144d05a1d60bba8460bbe6d0be2a651c1286d04353f6381237fdfaa",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2015-01-23T09:33:52Z",
    "title_canon_sha256": "56422465f8793a6c8717f359375bee70857c845188a27d6c628bfa3df8b3fadd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1501.05750",
    "kind": "arxiv",
    "version": 1
  }
}