Pith Number

pith:7UAO2PWW

pith:2008:7UAO2PWWJF4DRZ2E5WJ4TRA72U

not attested not anchored not stored refs pending

Superconductivity in undoped T' cuprates with Tc over 30 K

Akio Tsukada, Aya Utsuki, Hideki Yamamoto, Michio Naito, Osamu Matsumoto, Takaaki Manabe

arxiv:0805.4463 v1 · 2008-05-29 · cond-mat.supr-con

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

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	2026-05-18T03:24:18.583787Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fd00ed3ed6497838e744ed93c9c41fd501e2b5d903d46610a4fa574686870ded

Aliases

arxiv: 0805.4463 · arxiv_version: 0805.4463v1 · doi: 10.48550/arxiv.0805.4463 · pith_short_12: 7UAO2PWWJF4D · pith_short_16: 7UAO2PWWJF4DRZ2E · pith_short_8: 7UAO2PWW

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/7UAO2PWWJF4DRZ2E5WJ4TRA72U \
  | 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: fd00ed3ed6497838e744ed93c9c41fd501e2b5d903d46610a4fa574686870ded

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "90b26ceb42852c4a749abb457004a8fb7778b136816c355007d4c885f2db6c54",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cond-mat.supr-con",
    "submitted_at": "2008-05-29T03:13:13Z",
    "title_canon_sha256": "c2a818895e0ba7168a99174da9db0f2a44463d1ceb2fef6f8ef936e74cbd2855"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0805.4463",
    "kind": "arxiv",
    "version": 1
  }
}