Pith Number

pith:PYFUH5FV

pith:2016:PYFUH5FVTCTB2XVGUFR55P6BVQ

not attested not anchored not stored refs pending

Probing the Interstellar Dust in Galaxies over > 10 Gyr of Cosmic History

Daniel E. Welty, Debopam Som, Donald G. York, Giovanni Vladilo, Monique C. Aller, Varsha P. Kulkarni

arxiv:1603.06434 v1 · 2016-03-21 · astro-ph.GA

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	2026-05-18T00:55:46.733348Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7e0b43f4b598a61d5ea6a163debfc1ac3f5938b0818b0d72bdc2fc36481ef263

Aliases

arxiv: 1603.06434 · arxiv_version: 1603.06434v1 · doi: 10.48550/arxiv.1603.06434 · pith_short_12: PYFUH5FVTCTB · pith_short_16: PYFUH5FVTCTB2XVG · pith_short_8: PYFUH5FV

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/PYFUH5FVTCTB2XVGUFR55P6BVQ \
  | 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: 7e0b43f4b598a61d5ea6a163debfc1ac3f5938b0818b0d72bdc2fc36481ef263

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "015ed719a8126a21b8c998529b8021950672e70d08887709fd3fc305029a9283",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2016-03-21T14:23:49Z",
    "title_canon_sha256": "67a46723d47fa750e7b634135b6727611ff8cae92b99e469f4e5c5b3656d0e93"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1603.06434",
    "kind": "arxiv",
    "version": 1
  }
}