Pith Number

pith:IYJJWYWQ

pith:2009:IYJJWYWQHCLT2VOBT2PO4AHF2R

not attested not anchored not stored refs pending

Black hole entropy and SU(2) Chern-Simons theory

Alejandro Perez, Jonathan Engle, Karim Noui

arxiv:0905.3168 v3 · 2009-05-19 · gr-qc · hep-th

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IYJJWYWQHCLT2VOBT2PO4AHF2R}

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	2026-05-18T02:34:46.308964Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

46129b62d038973d55c19e9eee00e5d44c5efb7a51afd937bf54ef66ceb415a3

Aliases

arxiv: 0905.3168 · arxiv_version: 0905.3168v3 · doi: 10.48550/arxiv.0905.3168 · pith_short_12: IYJJWYWQHCLT · pith_short_16: IYJJWYWQHCLT2VOB · pith_short_8: IYJJWYWQ

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/IYJJWYWQHCLT2VOBT2PO4AHF2R \
  | 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: 46129b62d038973d55c19e9eee00e5d44c5efb7a51afd937bf54ef66ceb415a3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9cc45c8e471d4009738fa76a3113dfa3808640a5a98c2daa413be01817fa2a62",
    "cross_cats_sorted": [
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2009-05-19T20:58:47Z",
    "title_canon_sha256": "aea2839d4e6cab53f8ce25dd8c4dfd107aefd0665fe27231622610860f60e432"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0905.3168",
    "kind": "arxiv",
    "version": 3
  }
}