Pith Number

pith:KKRCXBIK

pith:2018:KKRCXBIKLN7QHALDSXDF3P2SJD

not attested not anchored not stored refs pending

Uniform-Velocity Spacetime Crystals

Christophe Caloz, Maksim Skorobogatiy, M\'ario G. Silveirinha, Nima Chamanara, Zo\'e-Lise Deck-L\'eger

arxiv:1808.02863 v2 · 2018-08-08 · 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{KKRCXBIKLN7QHALDSXDF3P2SJD}

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	2026-05-17T23:41:58.241671Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

52a22b850a5b7f03816395c65dbf5248dbbee7427fcfde0f03d92298c66409c2

Aliases

arxiv: 1808.02863 · arxiv_version: 1808.02863v2 · doi: 10.48550/arxiv.1808.02863 · pith_short_12: KKRCXBIKLN7Q · pith_short_16: KKRCXBIKLN7QHALD · pith_short_8: KKRCXBIK

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/KKRCXBIKLN7QHALDSXDF3P2SJD \
  | 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: 52a22b850a5b7f03816395c65dbf5248dbbee7427fcfde0f03d92298c66409c2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4948fe42bbd9a5b45ab1197998a2eb5601931fdfbae8f9847a285e35898f4f02",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2018-08-08T17:06:46Z",
    "title_canon_sha256": "b3f53517b029c52327bb4a432452175bb7caf3042f61dbfa524edfbff1a04b79"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.02863",
    "kind": "arxiv",
    "version": 2
  }
}