Pith Number

pith:PDGGLHAM

pith:2014:PDGGLHAMC4LA2C25CHP2NLZCUE

not attested not anchored not stored refs pending

Quantum Test of the Universality of Free Fall

Albert Roura, Christian Schubert, Dennis Schlippert, Ernst M. Rasel, Henning Albers, Jonas Hartwig, Logan L. Richardson, Wolfgang Ertmer, Wolfgang P. Schleich

arxiv:1406.4979 v1 · 2014-06-19 · physics.atom-ph · gr-qc

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PDGGLHAMC4LA2C25CHP2NLZCUE}

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	2026-05-18T02:49:11.370098Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

78cc659c0c17160d0b5d11dfa6af22a126a75791f75d3ecca863d343252c5355

Aliases

arxiv: 1406.4979 · arxiv_version: 1406.4979v1 · doi: 10.48550/arxiv.1406.4979 · pith_short_12: PDGGLHAMC4LA · pith_short_16: PDGGLHAMC4LA2C25 · pith_short_8: PDGGLHAM

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/PDGGLHAMC4LA2C25CHP2NLZCUE \
  | 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: 78cc659c0c17160d0b5d11dfa6af22a126a75791f75d3ecca863d343252c5355

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2f3a2df717f2cf93734f249b43372e83dcbd640efc5f95e3ab982899280886a9",
    "cross_cats_sorted": [
      "gr-qc"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.atom-ph",
    "submitted_at": "2014-06-19T08:36:57Z",
    "title_canon_sha256": "f53acff76049a7d3c975ca68d5c62eb9a5ceb05ec191db6878f39dee9fb9b30b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1406.4979",
    "kind": "arxiv",
    "version": 1
  }
}