Pith Number

pith:UAVBVDDE

pith:2017:UAVBVDDETF2DE4QE5ILSAN3SWC

not attested not anchored not stored refs pending

Wolf-Rayet spin at low metallicity and its implication for Black Hole formation channels

Jorick S. Vink (Armagh Observatory, Planetarium), Tim J. Harries (University of Exeter)

arxiv:1703.09857 v1 · 2017-03-29 · astro-ph.SR · astro-ph.GA · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UAVBVDDETF2DE4QE5ILSAN3SWC}

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	2026-05-18T00:40:06.561361Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a02a1a8c649974327204ea17203772b0b54b8625789cdfafca1934d804dfa44d

Aliases

arxiv: 1703.09857 · arxiv_version: 1703.09857v1 · doi: 10.48550/arxiv.1703.09857 · pith_short_12: UAVBVDDETF2D · pith_short_16: UAVBVDDETF2DE4QE · pith_short_8: UAVBVDDE

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/UAVBVDDETF2DE4QE5ILSAN3SWC \
  | 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: a02a1a8c649974327204ea17203772b0b54b8625789cdfafca1934d804dfa44d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "04816307cdf57b57f9bfd164caae85976043a469b38294fd8d11b12a3fcd0103",
    "cross_cats_sorted": [
      "astro-ph.GA",
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2017-03-29T01:53:42Z",
    "title_canon_sha256": "06ee8aad267e45cf65c034ffe9a450d7ecad30c497e0ac14320954f71f712893"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1703.09857",
    "kind": "arxiv",
    "version": 1
  }
}