Pith Number

pith:4EJSQJJC

pith:2025:4EJSQJJCTGXTG3QNEZFFVQ7E6V

not attested not anchored not stored refs pending

Doppler Pulse Amplification

Amir Bahrami, Christophe Caloz, Klaas De Kinder

arxiv:2506.01447 v3 · 2025-06-02 · 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{4EJSQJJCTGXTG3QNEZFFVQ7E6V}

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	2026-07-05T11:45:58.530708Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e11328252299af336e0d264a5ac3e4f569464922b7c3f11eb632c9703c5c8fe5

Aliases

arxiv: 2506.01447 · arxiv_version: 2506.01447v3 · doi: 10.48550/arxiv.2506.01447 · pith_short_12: 4EJSQJJCTGXT · pith_short_16: 4EJSQJJCTGXTG3QN · pith_short_8: 4EJSQJJC

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/4EJSQJJCTGXTG3QNEZFFVQ7E6V \
  | 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: e11328252299af336e0d264a5ac3e4f569464922b7c3f11eb632c9703c5c8fe5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d50b2bed62ce998509d7e58dfd41df9f9aeec2e4aa92a6d46785f1e14cc222d5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2025-06-02T09:05:36Z",
    "title_canon_sha256": "c3a6ceb5ce08e4ab4094bc45931d988a0af75b5a6cefc7bb116c9612947d7ec3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2506.01447",
    "kind": "arxiv",
    "version": 3
  }
}