Pith Number

pith:DWL75FAI

pith:2011:DWL75FAI3E4BXDPJAYHOFNUHPX

not attested not anchored not stored refs pending

The Future of Time: UTC and the Leap Second

David Finkleman, John Seago, P. Kenneth Seidelmann, Rob Seaman, Steve Allen

arxiv:1106.3141 v1 · 2011-06-16 · astro-ph.IM · physics.hist-ph · physics.pop-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{DWL75FAI3E4BXDPJAYHOFNUHPX}

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	2026-05-18T04:19:54.136182Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1d97fe9408d9381b8de9060ee2b6877dfad3ea1078cb35e5bb1df3ab295c6320

Aliases

arxiv: 1106.3141 · arxiv_version: 1106.3141v1 · doi: 10.48550/arxiv.1106.3141 · pith_short_12: DWL75FAI3E4B · pith_short_16: DWL75FAI3E4BXDPJ · pith_short_8: DWL75FAI

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/DWL75FAI3E4BXDPJAYHOFNUHPX \
  | 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: 1d97fe9408d9381b8de9060ee2b6877dfad3ea1078cb35e5bb1df3ab295c6320

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d577d34d90d49fb22e6a80852e42889d44c2205c03f4d6390042f118c27f4971",
    "cross_cats_sorted": [
      "physics.hist-ph",
      "physics.pop-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2011-06-16T05:04:27Z",
    "title_canon_sha256": "5b0eb4e19f516fd59b65fa625c95a1139272e57885b943f0e3570086ef4ebce4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1106.3141",
    "kind": "arxiv",
    "version": 1
  }
}