Pith Number

pith:IE43QR6O

pith:2013:IE43QR6O2XMF5J5CFCTRZUTHZB

not attested not anchored not stored refs pending

A general parametric model for the dynamic dark energy

S. Sello

arxiv:1308.0449 v1 · 2013-08-02 · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IE43QR6O2XMF5J5CFCTRZUTHZB}

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	2026-05-18T03:16:50.430766Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4139b847ced5d85ea7a228a71cd267c847409abe8abc6adc64dbdf15069e668c

Aliases

arxiv: 1308.0449 · arxiv_version: 1308.0449v1 · doi: 10.48550/arxiv.1308.0449 · pith_short_12: IE43QR6O2XMF · pith_short_16: IE43QR6O2XMF5J5C · pith_short_8: IE43QR6O

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/IE43QR6O2XMF5J5CFCTRZUTHZB \
  | 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: 4139b847ced5d85ea7a228a71cd267c847409abe8abc6adc64dbdf15069e668c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8ff209b4c68d65076af6004039b7b58272d37693436faeaebeb33179a2ca883b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-08-02T10:00:04Z",
    "title_canon_sha256": "ade3ec82e45dbd3282fb0cb458f943bbfec8668d0ab8380fc26cf28ecd466b13"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1308.0449",
    "kind": "arxiv",
    "version": 1
  }
}