Pith Number

pith:QCMIQU5C

pith:2014:QCMIQU5CB5JESBVV3D4EWTRWR5

not attested not anchored not stored refs pending

Irreversible Thermodynamics of the Universe: Constraints from Planck Data

Atreyee Biswas, Subenoy Chakraborty, Subhajit Saha

arxiv:1404.1220 v1 · 2014-04-04 · 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{QCMIQU5CB5JESBVV3D4EWTRWR5}

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	2026-05-18T01:14:53.536140Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

80988853a20f524906b5d8f84b4e368f4accab27b9d409caed62baf563e9ecb6

Aliases

arxiv: 1404.1220 · arxiv_version: 1404.1220v1 · doi: 10.48550/arxiv.1404.1220 · pith_short_12: QCMIQU5CB5JE · pith_short_16: QCMIQU5CB5JESBVV · pith_short_8: QCMIQU5C

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/QCMIQU5CB5JESBVV3D4EWTRWR5 \
  | 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: 80988853a20f524906b5d8f84b4e368f4accab27b9d409caed62baf563e9ecb6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9176393f6660bc9e4b2a85ff17cc27a9023c572347b4974ae22c512ebb8daa62",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2014-04-04T11:41:30Z",
    "title_canon_sha256": "117c068693a0396baf38dcba67390a92e6ae28026597854d9ba9fb4ce1bce3d5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1404.1220",
    "kind": "arxiv",
    "version": 1
  }
}