Pith Number

pith:FUJVZR2C

pith:2018:FUJVZR2CSHBYXWLF2MWDO7ZUN5

not attested not anchored not stored refs pending

Ewald sphere construction for structural colors

Alexander Yu. Petrov, Dirk Jalas, Hagen Renner, Lukas Maiwald, Manfred Eich, Slawa Lang

arxiv:1803.01755 v1 · 2018-03-05 · physics.optics

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	2026-05-18T00:16:25.435576Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2d135cc74291c38bd965d32c377f346f5b30e7920f4be8930f9d9283e3171dc8

Aliases

arxiv: 1803.01755 · arxiv_version: 1803.01755v1 · doi: 10.48550/arxiv.1803.01755 · pith_short_12: FUJVZR2CSHBY · pith_short_16: FUJVZR2CSHBYXWLF · pith_short_8: FUJVZR2C

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/FUJVZR2CSHBYXWLF2MWDO7ZUN5 \
  | 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: 2d135cc74291c38bd965d32c377f346f5b30e7920f4be8930f9d9283e3171dc8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f39d3cdafbfd02b851ae62b363f20d545aa63224cef769c260652d64b3f550da",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2018-03-05T16:14:35Z",
    "title_canon_sha256": "19643fd964804d2163cea3ef0876f72361e1558f5f5fa74e283d75c27c29d62b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1803.01755",
    "kind": "arxiv",
    "version": 1
  }
}