Show Celestia Blobs on Arbitrum chains

[ulyanas]

For Arbitrum Orbit chains that use Celestia DA, Blockscout has to show Celestia Blobs in Batches similar to OP chains.

Ideally on the batch page we need to show:

1. Celestia blob details: commitment and height under the toggle "Show data availability info"/"Hide data availability info" (like for AnyTrust)
2. a link to Celenium explorer. The link should be composed as following:

   1. Convert the commitment from hex to base64 and URL-encode it:

      commitment = url_encode(hex_to_base64(commitment)) = "Pr5aQ%2FR%2Fv2nbAD5UO7J%2BSHWSnt4vqaJdCfC9CC1dIPA%3D"

   2. Repeat the process with the namespace (namespace must be configured through an env variable as a hex string, e.g. ca1de12a9905be97beaf for Rari Testnet):

      namespace = url_encode(hex_to_base64(namespace)) = "AAAAAAAAAAAAAAAAAAAAAAAAAMod4SqZBb6Xvq8%3D"

   3. Construct the URL using the namespace as the hash (URL to the Celenium must be configured through an env variable): https://mocha.celenium.io/blob?commitment=Pr5aQ%2FR%2Fv2nbAD5UO7J%2BSHWSnt4vqaJdCfC9CC1dIPA%3D&hash=AAAAAAAAAAAAAAAAAAAAAAAAAMod4SqZBb6Xvq8%3D&height=4520041

The batch page must be available by both URLs:

• https://blockscout.url/batches/{batch_id}
  • API: https://blockscout.url/api/v2/arbitrum/batches/{batch_id}
• https://blockscout.url/batches/celestia/{height}/{commitment}
  • API: https://blockscout.url/api/v2/arbitrum/batches/da/celestia/{height}/{commitment}

We have a test deployment via Autoscout:

• Batch page in Blockscout UI: https://rari-testnet.cloud.blockscout.com/batches/80377
• Batch information by ID through Blockscout API:

  curl --request GET \
    --url https://rari-testnet.cloud.blockscout.com/api/v2/arbitrum/batches/80377
  

  {
  	"after_acc": "0x5567cc1bc43f75e1952633f6c8aeea9cbd0d0eba3633289fe8a5b674268bc3be",
  	"before_acc": "0x4a71bddc2cf848b2531a99352fc468bf03ccb7af471d6d25b05342f2eaf2f8d0",
  	"commitment_transaction": {
  		"block_number": 121020339,
  		"hash": "0xda4bd0b4a9ea3ae0c7e020ada411aea2e52cde1e5f87116f1c931eb3d6eeeede",
  		"status": "finalized",
  		"timestamp": "2025-02-04T17:49:34.000000Z"
  	},
  	"data_availability": {
  		"batch_data_container": "in_celestia",
  		"height": 4520041,
  		"transaction_commitment": "0x3ebe5a43f47fbf69db003e543bb27e4875929ede2fa9a25d09f0bd082d5d20f0"
  	},
  	"end_block": 740509,
  	"number": 80377,
  	"start_block": 740502,
  	"transactions_count": 23
  }

• Batch information by Celestia data through Blockscout API:

  curl --request GET \
    --url https://rari-testnet.cloud.blockscout.com/api/v2/arbitrum/batches/da/celestia/4520041/0x3ebe5a43f47fbf69db003e543bb27e4875929ede2fa9a25d09f0bd082d5d20f0
  

  {
  	"after_acc": "0x5567cc1bc43f75e1952633f6c8aeea9cbd0d0eba3633289fe8a5b674268bc3be",
  	"before_acc": "0x4a71bddc2cf848b2531a99352fc468bf03ccb7af471d6d25b05342f2eaf2f8d0",
  	"commitment_transaction": {
  		"block_number": 121020339,
  		"hash": "0xda4bd0b4a9ea3ae0c7e020ada411aea2e52cde1e5f87116f1c931eb3d6eeeede",
  		"status": "finalized",
  		"timestamp": "2025-02-04T17:49:34.000000Z"
  	},
  	"data_availability": {
  		"batch_data_container": "in_celestia",
  		"height": 4520041,
  		"transaction_commitment": "0x3ebe5a43f47fbf69db003e543bb27e4875929ede2fa9a25d09f0bd082d5d20f0"
  	},
  	"end_block": 740509,
  	"number": 80377,
  	"start_block": 740502,
  	"transactions_count": 23
  }

Custom backend: https://hub.docker.com/layers/blockscout/blockscout-arbitrum/6.10.1-alpha.9/images/sha256-ccb3f9b63a1c30e595a175dab85c83fcb1271927b6c524dae21fb1ae7bc7d3c6
(need to ask DevOps team to deploy it properly)

[ulyanas]

Could you please also fix Batch data container value naming?
celestia > Celestia
anytrust > AnyTrust

[tom2drum]

New ENV variable value for Rari-testnet
NEXT_PUBLIC_ROLLUP_DA_CELESTIA_NAMESPACE=0x00000000000000000000000000000000000000ca1de12a9905be97beaf