Pith Number

pith:C4RDMQT4

pith:2015:C4RDMQT4UZSTCL32TVS7UQWCAW

not attested not anchored not stored refs pending

Spectral Variations of the Sky: Constraints on Alternate Universes

R. Chary

arxiv:1510.00126 v2 · 2015-10-01 · 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{C4RDMQT4UZSTCL32TVS7UQWCAW}

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	2026-05-18T01:22:00.836106Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

172236427ca665312f7a9d65fa42c2058ed6c6bc4c7d970e5ad9d29b07b1d7ae

Aliases

arxiv: 1510.00126 · arxiv_version: 1510.00126v2 · doi: 10.48550/arxiv.1510.00126 · pith_short_12: C4RDMQT4UZST · pith_short_16: C4RDMQT4UZSTCL32 · pith_short_8: C4RDMQT4

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/C4RDMQT4UZSTCL32TVS7UQWCAW \
  | 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: 172236427ca665312f7a9d65fa42c2058ed6c6bc4c7d970e5ad9d29b07b1d7ae

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "91741b87677ee5d1424cd20122b55ffc5a1705e482a3c812d92fa8fffe610894",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2015-10-01T07:24:58Z",
    "title_canon_sha256": "0b605ebc7e1f39e744e4559842bcf69ad1814c9ae1e4843d6aa617c74cefd096"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1510.00126",
    "kind": "arxiv",
    "version": 2
  }
}