Pith Number

pith:EM5Q6E6T

pith:2015:EM5Q6E6TGOZITQB4JH2KFAGUGM

not attested not anchored not stored refs pending

Black Hole Thermodynamics Based on Unitary Evolutions

Yi-Xin Chen, Yu-Lei Feng

arxiv:1504.01505 v2 · 2015-04-07 · hep-th · gr-qc

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EM5Q6E6TGOZITQB4JH2KFAGUGM}

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	2026-05-18T01:29:31.692861Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

233b0f13d333b289c03c49f4a280d4333fdec90c495df85d140fbab3d1ad247e

Aliases

arxiv: 1504.01505 · arxiv_version: 1504.01505v2 · doi: 10.48550/arxiv.1504.01505 · pith_short_12: EM5Q6E6TGOZI · pith_short_16: EM5Q6E6TGOZITQB4 · pith_short_8: EM5Q6E6T

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/EM5Q6E6TGOZITQB4JH2KFAGUGM \
  | 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: 233b0f13d333b289c03c49f4a280d4333fdec90c495df85d140fbab3d1ad247e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9545c74ceef8269acfee17acc04d00fa9b58ac32018bc140e86f72f610df2217",
    "cross_cats_sorted": [
      "gr-qc"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "hep-th",
    "submitted_at": "2015-04-07T07:43:02Z",
    "title_canon_sha256": "1836b375d8f56243ad52805c562870ca949c2f8a4217ef34f08a0d16932b83f6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.01505",
    "kind": "arxiv",
    "version": 2
  }
}