Pith Number

pith:CISDAEPR

pith:2018:CISDAEPRE5OG52IGAXKXPKTCAU

not attested not anchored not stored refs pending

Dating glacier ice of the last millennium by quantum technology

Andrea Fischer, Arne Kersting, Helene Hoffmann, Lisa Ringena, Markus K. Oberthaler, Maximilian Schmidt, Pascal Bohleber, Philip Hopkins, Sven Ebser, Werner Aeschbach, Zhongyi Feng

arxiv:1811.03955 v2 · 2018-11-09 · physics.app-ph · physics.atom-ph · physics.geo-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{CISDAEPRE5OG52IGAXKXPKTCAU}

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	2026-05-17T23:43:04.335285Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

12243011f1275c6ee90605d577aa62053545424da153a36973f639642432a2aa

Aliases

arxiv: 1811.03955 · arxiv_version: 1811.03955v2 · doi: 10.48550/arxiv.1811.03955 · pith_short_12: CISDAEPRE5OG · pith_short_16: CISDAEPRE5OG52IG · pith_short_8: CISDAEPR

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/CISDAEPRE5OG52IGAXKXPKTCAU \
  | 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: 12243011f1275c6ee90605d577aa62053545424da153a36973f639642432a2aa

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1c4c06fae10fa5860fee09e9b1147cf00e3d1f02c3eeea3a2167d638ce6e36ae",
    "cross_cats_sorted": [
      "physics.atom-ph",
      "physics.geo-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.app-ph",
    "submitted_at": "2018-11-09T15:07:31Z",
    "title_canon_sha256": "eaadc4a8ba6ec9fd0ba44adc758a775a8ff0d86aa84b17867ea1e9811168e989"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1811.03955",
    "kind": "arxiv",
    "version": 2
  }
}