Pith Number

pith:GG4KIDJB

pith:2009:GG4KIDJBDXT2YWMK3BIRYYWS6S

not attested not anchored not stored refs pending

Discovery of the Barium Isotopes

A. Fritsch, A. Schuh, A. Shore, J.Q. Ginepro, M. Heim, M. Thoennessen

arxiv:0908.1944 v1 · 2009-08-13 · nucl-ex

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

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	2026-05-18T02:34:37.868049Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

31b8a40d211de7ac598ad8511c62d2f4aa249f6a684767c8263dd721bbe1c5e9

Aliases

arxiv: 0908.1944 · arxiv_version: 0908.1944v1 · doi: 10.48550/arxiv.0908.1944 · pith_short_12: GG4KIDJBDXT2 · pith_short_16: GG4KIDJBDXT2YWMK · pith_short_8: GG4KIDJB

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/GG4KIDJBDXT2YWMK3BIRYYWS6S \
  | 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: 31b8a40d211de7ac598ad8511c62d2f4aa249f6a684767c8263dd721bbe1c5e9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0350deed5d326511e9268ea029c4058e629ad674993adef90102ed342bc8e3e3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "nucl-ex",
    "submitted_at": "2009-08-13T17:58:28Z",
    "title_canon_sha256": "3941f45e4844c96195b2f27590cacdf4fc41c04683a3eb0dc2eb50f83be8e209"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0908.1944",
    "kind": "arxiv",
    "version": 1
  }
}