Pith Number

pith:7A4JYP7W

pith:2017:7A4JYP7WHWB4H3PTW4NJK53F2Y

not attested not anchored not stored refs pending

Assessment of toxic metals and hazardous substances in tattoo inks using Sy-XRF, AAS and Raman spectroscopy

Ana Guilherme Buzanich, Cl\'audia Afonso, Helena Louren\c{c}o, Maria Lu\'isa Carvalho, Marta Manso, Martin Radtke, Mauro Guerra, Sofia Pessanha, Uwe Reinholz

arxiv:1708.07376 v2 · 2017-08-24 · physics.med-ph · physics.app-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{7A4JYP7WHWB4H3PTW4NJK53F2Y}

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	2026-05-18T00:21:51.051599Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f8389c3ff63d83c3edf3b71a957765d61ab8e099a2bc255b6fc3c29a42396ca0

Aliases

arxiv: 1708.07376 · arxiv_version: 1708.07376v2 · doi: 10.48550/arxiv.1708.07376 · pith_short_12: 7A4JYP7WHWB4 · pith_short_16: 7A4JYP7WHWB4H3PT · pith_short_8: 7A4JYP7W

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/7A4JYP7WHWB4H3PTW4NJK53F2Y \
  | 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: f8389c3ff63d83c3edf3b71a957765d61ab8e099a2bc255b6fc3c29a42396ca0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0e71e310479690e46c5a6025a43a91e4a84d258158baae298e6b172e42612550",
    "cross_cats_sorted": [
      "physics.app-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.med-ph",
    "submitted_at": "2017-08-24T12:40:47Z",
    "title_canon_sha256": "c3908dd3a46784bc0ed8fc002fc8daa5a44051bbf3f1f56435f8afe52dfb7f12"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1708.07376",
    "kind": "arxiv",
    "version": 2
  }
}