Pith Number

pith:EECBAFPT

pith:1999:EECBAFPTTGYE5DYVKGU3FJFXYJ

not attested not anchored not stored refs pending

Linear-scaling ab-initio calculations for large and complex systems

Alberto Garcia, Daniel Sanchez-Portal, Emilio Artacho, Jose M. Soler, Pablo Ordejon

arxiv:cond-mat/9904159 v1 · 1999-04-12 · cond-mat.mtrl-sci

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EECBAFPTTGYE5DYVKGU3FJFXYJ}

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	2026-05-18T01:39:29.080334Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

21041015f399b04e8f1551a9b2a4b7c24a3410991e360918be5a49f8be6d876f

Aliases

arxiv: cond-mat/9904159 · arxiv_version: cond-mat/9904159v1 · doi: 10.48550/arxiv.cond-mat/9904159 · pith_short_12: EECBAFPTTGYE · pith_short_16: EECBAFPTTGYE5DYV · pith_short_8: EECBAFPT

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/EECBAFPTTGYE5DYVKGU3FJFXYJ \
  | 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: 21041015f399b04e8f1551a9b2a4b7c24a3410991e360918be5a49f8be6d876f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b980b22d288e74de33ac0b9dca9286333ff456b6b893a86898524dbc199148c4",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "cond-mat.mtrl-sci",
    "submitted_at": "1999-04-12T16:01:39Z",
    "title_canon_sha256": "a391a34306c8f2c5bedbd4675e51d8f49333a98e8a14dbb36e24515f72ca86e9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "cond-mat/9904159",
    "kind": "arxiv",
    "version": 1
  }
}