Pith Number

pith:7BTCVRNK

pith:2021:7BTCVRNK6G4MLOOXCP45L7ZXD6

not attested not anchored not stored refs pending

Exceptional points in lossy media enable decay-free wave propagation

Alexander Yulaev, Brian J. Roxworthy, Daron A. Westly, Kartik Srinivasan, Qing Li, Sangsik Kim, Vladimir A. Aksyuk

arxiv:2110.04341 v1 · 2021-10-08 · 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{7BTCVRNK6G4MLOOXCP45L7ZXD6}

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	2026-07-05T05:23:07.151674Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f8662ac5aaf1b8c5b9d713f9d5ff371f8468b29f48a22eedc16865e32e86de12

Aliases

arxiv: 2110.04341 · arxiv_version: 2110.04341v1 · doi: 10.48550/arxiv.2110.04341 · pith_short_12: 7BTCVRNK6G4M · pith_short_16: 7BTCVRNK6G4MLOOX · pith_short_8: 7BTCVRNK

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/7BTCVRNK6G4MLOOXCP45L7ZXD6 \
  | 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: f8662ac5aaf1b8c5b9d713f9d5ff371f8468b29f48a22eedc16865e32e86de12

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7a0076efc7e52ece9c265ea804ccbc367b66636f2c905ee45ec1a99e5c03e264",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2021-10-08T19:08:58Z",
    "title_canon_sha256": "74b1bc1f772ae6804b1dbfaa63599a1832a951dc2e951fb8e97d5768c8d0271d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2110.04341",
    "kind": "arxiv",
    "version": 1
  }
}