Pith Number

pith:HDIIA5RA

pith:2006:HDIIA5RATBSYH2H3NPNV3OU5DH

not attested not anchored not stored refs pending

Dark Energy in the Dark Ages

Eric V. Linder

arxiv:astro-ph/0603584 v2 · 2006-03-21 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HDIIA5RATBSYH2H3NPNV3OU5DH}

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	2026-05-18T01:40:32.152096Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

38d0807620986583e8fb6bdb5dba9d19dbeb63c81f7b21ccba9b80ad7053bcc9

Aliases

arxiv: astro-ph/0603584 · arxiv_version: astro-ph/0603584v2 · doi: 10.48550/arxiv.astro-ph/0603584 · pith_short_12: HDIIA5RATBSY · pith_short_16: HDIIA5RATBSYH2H3 · pith_short_8: HDIIA5RA

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/HDIIA5RATBSYH2H3NPNV3OU5DH \
  | 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: 38d0807620986583e8fb6bdb5dba9d19dbeb63c81f7b21ccba9b80ad7053bcc9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6fa320f5bfe2f6dc0652f634b8b01293e17e9f3e2e27d7f64187844251144b25",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2006-03-21T18:40:29Z",
    "title_canon_sha256": "a6f7654cb47e405e5e94f0ff7ebf8f1f77bb1d8d69034563daba44932a117666"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0603584",
    "kind": "arxiv",
    "version": 2
  }
}