Pith Number

pith:3VLWYMP7

pith:2010:3VLWYMP77XOGGKUA3O624HYWF2

not attested not anchored not stored refs pending

Unknowns and unknown unknowns: from dark sky to dark matter and dark energy

Yasushi Suto (Univ. of Tokyo)

arxiv:1007.1256 v1 · 2010-07-07 · astro-ph.CO · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{3VLWYMP77XOGGKUA3O624HYWF2}

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	2026-05-18T02:06:24.009783Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dd576c31fffddc632a80dbbdae1f162eb385a2a5b3f68fd7ee0ed861eadf366d

Aliases

arxiv: 1007.1256 · arxiv_version: 1007.1256v1 · doi: 10.48550/arxiv.1007.1256 · pith_short_12: 3VLWYMP77XOG · pith_short_16: 3VLWYMP77XOGGKUA · pith_short_8: 3VLWYMP7

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/3VLWYMP77XOGGKUA3O624HYWF2 \
  | 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: dd576c31fffddc632a80dbbdae1f162eb385a2a5b3f68fd7ee0ed861eadf366d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a2b1e49a9ba3d09d7cf0939016e5dae8b9fd578e57e425ae26a03f399000be62",
    "cross_cats_sorted": [
      "astro-ph.IM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2010-07-07T22:48:45Z",
    "title_canon_sha256": "3405055ed3612326d3f6ddf3d23e2d5d3b50851765cf978e4e8b7c62ea1719ff"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1007.1256",
    "kind": "arxiv",
    "version": 1
  }
}