Pith Number

pith:F6VGPDGL

pith:2014:F6VGPDGL66WM2HGXRK7BIZQDQD

not attested not anchored not stored refs pending

Quantum estimation of the Schwarzschild space-time parameters of the Earth

Animesh Datta, David Edward Bruschi, Ivette Fuentes, Rupert Ursin, Timothy C. Ralph

arxiv:1409.0234 v1 · 2014-08-31 · quant-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{F6VGPDGL66WM2HGXRK7BIZQDQD}

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	2026-05-18T02:32:07.294301Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2faa678ccbf7accd1cd78abe14660380cce57cd83ac3961ce04cad79d7b3177a

Aliases

arxiv: 1409.0234 · arxiv_version: 1409.0234v1 · doi: 10.48550/arxiv.1409.0234 · pith_short_12: F6VGPDGL66WM · pith_short_16: F6VGPDGL66WM2HGX · pith_short_8: F6VGPDGL

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/F6VGPDGL66WM2HGXRK7BIZQDQD \
  | 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: 2faa678ccbf7accd1cd78abe14660380cce57cd83ac3961ce04cad79d7b3177a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bcedb405442ff9021a62ff7e2a9d3e57630c48936154fe3aaf0216a8d85626e4",
    "cross_cats_sorted": [
      "gr-qc"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2014-08-31T16:44:10Z",
    "title_canon_sha256": "2907d83d7e68d77bcb7d3100d33154f8e1c4bef9af67669e9d7cb63c92feacbc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1409.0234",
    "kind": "arxiv",
    "version": 1
  }
}