Pith Number

pith:B3DMQ7EK

pith:2009:B3DMQ7EKD3MPPA6H73TK5WCZ3Q

not attested not anchored not stored refs pending

Fermi surfaces and quantum oscillations in underdoped high-Tc superconductors YBa2Cu3O6.5 and YBa2Cu4O8

Hyoung Joon Choi, Hyungju Oh, Marvin L. Cohen, Steven G. Louie

arxiv:0912.2450 v1 · 2009-12-12 · cond-mat.supr-con · cond-mat.str-el

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{B3DMQ7EKD3MPPA6H73TK5WCZ3Q}

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	2026-05-18T03:37:42.095233Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0ec6c87c8a1ed8f783c7fee6aed859dc0fa557b92889f82c1d4d616e5c897ea0

Aliases

arxiv: 0912.2450 · arxiv_version: 0912.2450v1 · doi: 10.48550/arxiv.0912.2450 · pith_short_12: B3DMQ7EKD3MP · pith_short_16: B3DMQ7EKD3MPPA6H · pith_short_8: B3DMQ7EK

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/B3DMQ7EKD3MPPA6H73TK5WCZ3Q \
  | 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: 0ec6c87c8a1ed8f783c7fee6aed859dc0fa557b92889f82c1d4d616e5c897ea0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "76283f024f51dfe143e6baa4f72c0924974014f9d94936684413f16b5be7880e",
    "cross_cats_sorted": [
      "cond-mat.str-el"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cond-mat.supr-con",
    "submitted_at": "2009-12-12T20:09:42Z",
    "title_canon_sha256": "cce2e04c3aaa720c3c926e19c0bb1fb83518db2bd87041a5a6bdc0739c346e5b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0912.2450",
    "kind": "arxiv",
    "version": 1
  }
}