Pith Number

pith:PMPB56HQ

pith:2016:PMPB56HQK2HK5KXKP5DSYXA6ZD

not attested not anchored not stored refs pending

A Rn-220 source for the calibration of low-background experiments

Andrew Brown, Darryl Masson, Ethan Brown, Hardy Simgen, Jochen Schreiner, Mayra Cervantes, Rafael F. Lang, Sean MacMullin

arxiv:1602.01138 v2 · 2016-02-02 · physics.ins-det · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PMPB56HQK2HK5KXKP5DSYXA6ZD}

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	2026-05-18T01:13:37.715169Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7b1e1ef8f0568eaeaaea7f472c5c1ec8d7959d2d914ad6165a28fb9b9a8254bd

Aliases

arxiv: 1602.01138 · arxiv_version: 1602.01138v2 · doi: 10.48550/arxiv.1602.01138 · pith_short_12: PMPB56HQK2HK · pith_short_16: PMPB56HQK2HK5KXK · pith_short_8: PMPB56HQ

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/PMPB56HQK2HK5KXKP5DSYXA6ZD \
  | 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: 7b1e1ef8f0568eaeaaea7f472c5c1ec8d7959d2d914ad6165a28fb9b9a8254bd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a5cb738305f3ac3d46152416404d1eda8647b70477876ff1f37ec88d9d614dbc",
    "cross_cats_sorted": [
      "astro-ph.IM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.ins-det",
    "submitted_at": "2016-02-02T22:30:09Z",
    "title_canon_sha256": "622a17de57a18134cdad3e3d8a963734d529620773ae0c4d2bb0d1f1e567c5ce"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1602.01138",
    "kind": "arxiv",
    "version": 2
  }
}