Pith Number

pith:DTCPQHFL

pith:2018:DTCPQHFLYC2SBGULYEXXK3NHGA

not attested not anchored not stored refs pending

New measurement of the $1S-3S$ transition frequency of hydrogen: contribution to the proton charge radius puzzle

Fran\c{c}ois Biraben, Fran\c{c}ois Nez, H\'el\`ene Fleurbaey, Jocelyne Gu\'ena, Lucile Julien, Marie Bonnaud, Michel Abgrall, Sandrine Galtier, Simon Thomas

arxiv:1801.08816 v2 · 2018-01-26 · 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{DTCPQHFLYC2SBGULYEXXK3NHGA}

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	2026-05-18T00:16:50.217533Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1cc4f81cabc0b5209a8bc12f756da7301ad33c1c23f97d0448fe5c82e1dfe76b

Aliases

arxiv: 1801.08816 · arxiv_version: 1801.08816v2 · doi: 10.48550/arxiv.1801.08816 · pith_short_12: DTCPQHFLYC2S · pith_short_16: DTCPQHFLYC2SBGUL · pith_short_8: DTCPQHFL

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/DTCPQHFLYC2SBGULYEXXK3NHGA \
  | 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: 1cc4f81cabc0b5209a8bc12f756da7301ad33c1c23f97d0448fe5c82e1dfe76b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e79e7d1283a435a8c86e6512d08c03ef29947faafc63953379306de124c73e40",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.atom-ph",
    "submitted_at": "2018-01-26T14:05:37Z",
    "title_canon_sha256": "f3fb9a590463e3cb544d641e5ffd1c18587c4171a151c496c4c1bdb9cf9048a5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1801.08816",
    "kind": "arxiv",
    "version": 2
  }
}