Pith Number

pith:RL75KCCP

pith:2019:RL75KCCP6HBDNNJO34OZX4322G

not attested not anchored not stored refs pending

The challenges of modelling microphysics: ambipolar diffusion, chemistry, and cosmic rays in MHD shocks

B. Ercolano, D. Galli, J. P. Ramsey, M. Padovani, N. Vaytet, T. Grassi, T. Haugboelle

arxiv:1901.00504 v1 · 2019-01-02 · 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	2026-05-17T23:56:16.353788Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8affd5084ff1c236b52edf1d9bf37ad1ba0053d427353ac9c0ff5013df8ac72f

Aliases

arxiv: 1901.00504 · arxiv_version: 1901.00504v1 · doi: 10.48550/arxiv.1901.00504 · pith_short_12: RL75KCCP6HBD · pith_short_16: RL75KCCP6HBDNNJO · pith_short_8: RL75KCCP

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/RL75KCCP6HBDNNJO34OZX4322G \
  | 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: 8affd5084ff1c236b52edf1d9bf37ad1ba0053d427353ac9c0ff5013df8ac72f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cbbd803d54a80cce97ebee4bf2acb533f063b657fdbac9a1efa27152f96c98e2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2019-01-02T19:00:09Z",
    "title_canon_sha256": "42c1c69e503889c865a71ff461d1304bef78bbb84afd25ad67ba6647011edd8a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.00504",
    "kind": "arxiv",
    "version": 1
  }
}