Pith Number

pith:4ZBICGZJ

pith:2018:4ZBICGZJQBKYGREBOKHP76WD2U

not attested not anchored not stored refs pending

Acoustic flat lensing using an indefinite medium

A.D. Rakic, A.L. Vanel, C. Tronche, G. Dupont, J. Perchoux, K. Bertling, M. Dubois, R. Abdeddaim, R.V. Craster, S. Enoch, S. Guenneau, T. Antonakakis, Y. Achaoui

arxiv:1810.01777 v1 · 2018-10-02 · physics.class-ph

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

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	2026-05-17T23:50:12.203640Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e642811b298055834481728efffac3d527ee3862deb41d71cb953f20ecddd90a

Aliases

arxiv: 1810.01777 · arxiv_version: 1810.01777v1 · doi: 10.48550/arxiv.1810.01777 · pith_short_12: 4ZBICGZJQBKY · pith_short_16: 4ZBICGZJQBKYGREB · pith_short_8: 4ZBICGZJ

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/4ZBICGZJQBKYGREBOKHP76WD2U \
  | 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: e642811b298055834481728efffac3d527ee3862deb41d71cb953f20ecddd90a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "da5d4b3ca8347ce9240e10191583bed7beec4f6b6aadfa63275fbf0f6edb7a2c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.class-ph",
    "submitted_at": "2018-10-02T16:39:56Z",
    "title_canon_sha256": "2940de808799d7b153e21066a5943131dbf6ab7d6988f10f7aaad36fa9c11f56"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1810.01777",
    "kind": "arxiv",
    "version": 1
  }
}