Pith Number

pith:W6FTIJ3Q

pith:2016:W6FTIJ3QUOTGDNXGZPAM5ZULP2

not attested not anchored not stored refs pending

Extinction law in the range 0.4-4.8 $\mu$m and the 8620 $\AA$ DIB towards the stellar cluster Westerlund 1

Augusto Damineli, Daniel S. C. Damineli, Felipe Navarete, Leonardo A. Almeida, Mairan Teodoro, Marcelo S.Rubinho, Robert D. Blum

arxiv:1607.04639 v2 · 2016-07-15 · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{W6FTIJ3QUOTGDNXGZPAM5ZULP2}

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	2026-05-18T01:07:15.726631Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b78b342770a3a661b6e6cbc0cee68b7eb811dcdad2a8a47db04d54e67bba141d

Aliases

arxiv: 1607.04639 · arxiv_version: 1607.04639v2 · doi: 10.48550/arxiv.1607.04639 · pith_short_12: W6FTIJ3QUOTG · pith_short_16: W6FTIJ3QUOTGDNXG · pith_short_8: W6FTIJ3Q

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/W6FTIJ3QUOTGDNXGZPAM5ZULP2 \
  | 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: b78b342770a3a661b6e6cbc0cee68b7eb811dcdad2a8a47db04d54e67bba141d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "191d7010f3cc6e2449039545949be6a258640297798eea765918505dfc6b4847",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2016-07-15T20:00:00Z",
    "title_canon_sha256": "18c5f12d3958d492b3dc694b2f6a9cb8dcca6252044a12b32f47b85646a0a408"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1607.04639",
    "kind": "arxiv",
    "version": 2
  }
}