Pith Number

pith:ZYIUAOA7

pith:2020:ZYIUAOA7MX5LFR7OUM43FYZBTO

not attested not anchored not stored refs pending

An Analysis of the Shapes of Interstellar Extinction Curves. VIII. The Optical Extinction Structure

D. Massa, E.L. Fitzpatrick, K.D. Gordon

arxiv:2001.10880 v1 · 2020-01-29 · astro-ph.SR · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ZYIUAOA7MX5LFR7OUM43FYZBTO}

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	2026-07-05T00:46:58.755077Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ce1140381f65fab2c7eea339b2e3219b99da8bed67b98a8b05ea74815d7129e9

Aliases

arxiv: 2001.10880 · arxiv_version: 2001.10880v1 · doi: 10.48550/arxiv.2001.10880 · pith_short_12: ZYIUAOA7MX5L · pith_short_16: ZYIUAOA7MX5LFR7O · pith_short_8: ZYIUAOA7

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/ZYIUAOA7MX5LFR7OUM43FYZBTO \
  | 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: ce1140381f65fab2c7eea339b2e3219b99da8bed67b98a8b05ea74815d7129e9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3971b002775a7a9d226dd5a3bcfa27d9ba3657fa6e1cca5f3c8caebd954cc90d",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2020-01-29T15:06:26Z",
    "title_canon_sha256": "8ca048dab99a68081579032a80aabd2565602c1a8b7808dc7061c8a2f54ec2da"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2001.10880",
    "kind": "arxiv",
    "version": 1
  }
}