Pith Number

pith:ZMRQ3TKD

pith:2018:ZMRQ3TKDWPUVN4GH5O4YSJR4HS

not attested not anchored not stored refs pending

Climate entropy production recorded in a deep Antarctic ice core

Elizabeth Bradley, James W. C. White, Joshua Garland, Michael Neuder, Tyler R. Jones

arxiv:1806.10936 v2 · 2018-06-20 · physics.geo-ph · physics.data-an

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ZMRQ3TKDWPUVN4GH5O4YSJR4HS}

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	2026-05-18T00:01:19.420564Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cb230dcd43b3e956f0c7ebb989263c3c9374934027b55a06eac7104ecab1ff8b

Aliases

arxiv: 1806.10936 · arxiv_version: 1806.10936v2 · doi: 10.48550/arxiv.1806.10936 · pith_short_12: ZMRQ3TKDWPUV · pith_short_16: ZMRQ3TKDWPUVN4GH · pith_short_8: ZMRQ3TKD

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/ZMRQ3TKDWPUVN4GH5O4YSJR4HS \
  | 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: cb230dcd43b3e956f0c7ebb989263c3c9374934027b55a06eac7104ecab1ff8b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c64c5871fb048342e559e3c76b47ddab486895b430c3e9b60d7bc0188f548ca4",
    "cross_cats_sorted": [
      "physics.data-an"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.geo-ph",
    "submitted_at": "2018-06-20T21:57:31Z",
    "title_canon_sha256": "346bb8ff4af15f33c7a80840ad0c6f150665eede447308171a877f70e8cc1f29"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1806.10936",
    "kind": "arxiv",
    "version": 2
  }
}