Pith Number

pith:3WRAH7UH

pith:2019:3WRAH7UHGBDIUEQXQ2TFR73EUW

not attested not anchored not stored refs pending

Observers' measurements of time and length in premetric electrodynamics

Christian Pfeifer

arxiv:1903.04444 v1 · 2019-03-11 · gr-qc · hep-th

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{3WRAH7UHGBDIUEQXQ2TFR73EUW}

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	2026-05-17T23:51:35.344684Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dda203fe8730468a121786a658ff64a59995bc74e297f2673205e9cfde4036a4

Aliases

arxiv: 1903.04444 · arxiv_version: 1903.04444v1 · doi: 10.48550/arxiv.1903.04444 · pith_short_12: 3WRAH7UHGBDI · pith_short_16: 3WRAH7UHGBDIUEQX · pith_short_8: 3WRAH7UH

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/3WRAH7UHGBDIUEQXQ2TFR73EUW \
  | 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: dda203fe8730468a121786a658ff64a59995bc74e297f2673205e9cfde4036a4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "299c34c65e311df245723ac261bac21d6b7934656e2903d6ce403c1499b3804b",
    "cross_cats_sorted": [
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2019-03-11T17:07:53Z",
    "title_canon_sha256": "b60d251caa792e0759b46e725e86e532133867ccc53b52e79933651f8e101112"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.04444",
    "kind": "arxiv",
    "version": 1
  }
}