Pith Number

pith:ZAQWDKC5

pith:2019:ZAQWDKC5XEKIA6LIVUZEURRWEB

not attested not anchored not stored refs pending

A shorter Archean day-length biases interpretations of the early Earth's climate

Christopher Spalding, Woodward W. Fischer

arxiv:1903.03817 v1 · 2019-03-09 · astro-ph.EP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ZAQWDKC5XEKIA6LIVUZEURRWEB}

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	2026-05-17T23:49:38.597016Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c82161a85db914807968ad324a46362062a5e5149b66359247df7eea3dbd396b

Aliases

arxiv: 1903.03817 · arxiv_version: 1903.03817v1 · doi: 10.48550/arxiv.1903.03817 · pith_short_12: ZAQWDKC5XEKI · pith_short_16: ZAQWDKC5XEKIA6LI · pith_short_8: ZAQWDKC5

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/ZAQWDKC5XEKIA6LIVUZEURRWEB \
  | 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: c82161a85db914807968ad324a46362062a5e5149b66359247df7eea3dbd396b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "67377235bd3b2819db3a996cd09199568f777c9ac14b7f5c8953933ccd1560d9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2019-03-09T15:33:37Z",
    "title_canon_sha256": "cc7925598ed1f31b42a0be4bbe0c9f56ff7126b317c7b33242088e4c930bca25"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.03817",
    "kind": "arxiv",
    "version": 1
  }
}