Pith Number

pith:7U25WA6U

pith:2021:7U25WA6U7ZCD4XI4ZG26HS6BLB

not attested not anchored not stored refs pending

Twenty-three millisecond electron spin coherence of erbium ions in a natural-abundance crystal

Andreas Erb, Daniel Est\`eve, Daniel Flanigan, Denis Vion, Emmanuel Flurin, Eric Billaud, Marianne Le Dantec, Milo\v{s} Ran\v{c}i\'c, Patrice Bertet, Philippe Goldner, Ren Bao Liu, Sen Lin, Sylvain Bertaina, Thierry Chaneli\`ere, Vishal Ranjan

arxiv:2106.14974 v1 · 2021-06-28 · quant-ph · cond-mat.mes-hall

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7U25WA6U7ZCD4XI4ZG26HS6BLB}

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	2026-07-05T02:53:03.966505Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fd35db03d4fe443e5d1cc9b5e3cbc1586a833792dad07488198b4286cf9cbd23

Aliases

arxiv: 2106.14974 · arxiv_version: 2106.14974v1 · doi: 10.48550/arxiv.2106.14974 · pith_short_12: 7U25WA6U7ZCD · pith_short_16: 7U25WA6U7ZCD4XI4 · pith_short_8: 7U25WA6U

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/7U25WA6U7ZCD4XI4ZG26HS6BLB \
  | 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: fd35db03d4fe443e5d1cc9b5e3cbc1586a833792dad07488198b4286cf9cbd23

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "54b48095cd332527ca3dad9f98e646f3a3341be69ebaa8db6d9d938940dc8a20",
    "cross_cats_sorted": [
      "cond-mat.mes-hall"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2021-06-28T20:45:11Z",
    "title_canon_sha256": "bc151c4feabb364bcd37b9e49a1e38fa16394868b511f35cc7eddf365b0ab7b3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2106.14974",
    "kind": "arxiv",
    "version": 1
  }
}