Pith Number

pith:63MUZDRJ

pith:2004:63MUZDRJW4KBW6ZNUMVRSBFCPC

not attested not anchored not stored refs pending

Lifetime and hyperfine splitting measurements on the 7s and 6p levels in rubidium

2), (2) Department of Physics, Astronomy, College Park, E. Gomez (1), G. D. Sprouse (1) ((1) Department of Physics, L. A. Orozco (1, Maryland), New York, S. Aubin (1), State University of New York, Stony Brook, University of Maryland

arxiv:physics/0409077 v1 · 2004-09-16 · physics.atom-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{63MUZDRJW4KBW6ZNUMVRSBFCPC}

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	2026-05-18T01:38:08.234380Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f6d94c8e29b7141b7b2da32b1904a278841101b16e93b5d65f34ff40049c5241

Aliases

arxiv: physics/0409077 · arxiv_version: physics/0409077v1 · doi: 10.48550/arxiv.physics/0409077 · pith_short_12: 63MUZDRJW4KB · pith_short_16: 63MUZDRJW4KBW6ZN · pith_short_8: 63MUZDRJ

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/63MUZDRJW4KBW6ZNUMVRSBFCPC \
  | 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: f6d94c8e29b7141b7b2da32b1904a278841101b16e93b5d65f34ff40049c5241

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f1c50314f94b0dd991fbe3d4fb4ee38e416defa84360f76bfe690622fe35279e",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "physics.atom-ph",
    "submitted_at": "2004-09-16T13:31:48Z",
    "title_canon_sha256": "6bcdeb8407d77ad9ed4ea4be9b8057b3103bfb6c569497ef8938be6c88ba9a18"
  },
  "schema_version": "1.0",
  "source": {
    "id": "physics/0409077",
    "kind": "arxiv",
    "version": 1
  }
}