Pith Number

pith:QAOFQYGD

pith:2011:QAOFQYGDJUVQ76RSRJFFXWU73K

not attested not anchored not stored refs pending

Frequency metrology in quantum degenerate helium: Direct measurement of the 2 3S1 - 2 1S0 transition

J.S. Borbely, J. Simonet, K.S.E. Eikema, M.D. Hoogerland, R.A. Rozendaal, R. van Rooij, W. Vassen

arxiv:1105.4974 v1 · 2011-05-25 · physics.atom-ph · cond-mat.quant-gas

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QAOFQYGDJUVQ76RSRJFFXWU73K}

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	2026-05-18T02:01:51.144832Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

801c5860c34d2b0ffa328a4a5bda9fdaaa8f47b55c26f1c2770e9266a46c1260

Aliases

arxiv: 1105.4974 · arxiv_version: 1105.4974v1 · doi: 10.48550/arxiv.1105.4974 · pith_short_12: QAOFQYGDJUVQ · pith_short_16: QAOFQYGDJUVQ76RS · pith_short_8: QAOFQYGD

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/QAOFQYGDJUVQ76RSRJFFXWU73K \
  | 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: 801c5860c34d2b0ffa328a4a5bda9fdaaa8f47b55c26f1c2770e9266a46c1260

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bdbb7d73fd4baa2bd0b8033ad27ad995be3dfcd1f6faab80423675aada36e18c",
    "cross_cats_sorted": [
      "cond-mat.quant-gas"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.atom-ph",
    "submitted_at": "2011-05-25T09:20:30Z",
    "title_canon_sha256": "068b5c356b0994dd4284236e5a04b5ca5973d1e9792a0c1cfa4bcc66ce3d0ead"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1105.4974",
    "kind": "arxiv",
    "version": 1
  }
}