Pith Number

pith:3UPYRYMZ

pith:2014:3UPYRYMZWHDC4NHETQ5XC3S2SH

not attested not anchored not stored refs pending

Analogue transformation acoustics and the compression of spacetime

A. Mart\'inez, C. Barcel\'o, C. Garc\'ia-Meca, G. Jannes, J. S\'anchez-Dehesa, S. Carloni

arxiv:1407.1630 v1 · 2014-07-07 · gr-qc · cond-mat.mes-hall · cond-mat.mtrl-sci

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{3UPYRYMZWHDC4NHETQ5XC3S2SH}

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	2026-05-18T02:42:45.896446Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dd1f88e199b1c62e34e49c3b716e5a91ea86f2ed9e8b5bd44f8a39bfdcf216f8

Aliases

arxiv: 1407.1630 · arxiv_version: 1407.1630v1 · doi: 10.48550/arxiv.1407.1630 · pith_short_12: 3UPYRYMZWHDC · pith_short_16: 3UPYRYMZWHDC4NHE · pith_short_8: 3UPYRYMZ

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/3UPYRYMZWHDC4NHETQ5XC3S2SH \
  | 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: dd1f88e199b1c62e34e49c3b716e5a91ea86f2ed9e8b5bd44f8a39bfdcf216f8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3ba86b2405f93d70202b2bb35931e26ced378ede28f3f6e801568647a76b18ef",
    "cross_cats_sorted": [
      "cond-mat.mes-hall",
      "cond-mat.mtrl-sci"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2014-07-07T09:02:57Z",
    "title_canon_sha256": "495539f397cf978ee16844b7dff5c657b59c447a2e2909325084c269c7cc87aa"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1407.1630",
    "kind": "arxiv",
    "version": 1
  }
}