Pith Number

pith:BHLLQKNK

pith:2012:BHLLQKNKP5DUQWIRF5DIMVYZQD

not attested not anchored not stored refs pending

Constraining dark energy

Ulf H. Danielsson

arxiv:1204.3311 v2 · 2012-04-15 · hep-th · 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{BHLLQKNKP5DUQWIRF5DIMVYZQD}

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	2026-05-18T01:57:52.372699Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

09d6b829aa7f474859112f4686571980dfdbaa8ac34eaa14ceabae6d15daadaa

Aliases

arxiv: 1204.3311 · arxiv_version: 1204.3311v2 · doi: 10.48550/arxiv.1204.3311 · pith_short_12: BHLLQKNKP5DU · pith_short_16: BHLLQKNKP5DUQWIR · pith_short_8: BHLLQKNK

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/BHLLQKNKP5DUQWIRF5DIMVYZQD \
  | 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: 09d6b829aa7f474859112f4686571980dfdbaa8ac34eaa14ceabae6d15daadaa

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "637ce23f3a7b712c352d5beb3f3b525cd623cc610aad6d8a7b9aee38909698cf",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "hep-th",
    "submitted_at": "2012-04-15T19:06:39Z",
    "title_canon_sha256": "5f13e2333829ec79a0f9a41729a1c4ff04c017cdbc633c0472c4eb1cb355dda0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1204.3311",
    "kind": "arxiv",
    "version": 2
  }
}