Arqma Blockchain Explorer

(No Javascript | No Cookies | No Web Analytics Trackers | No Images | Open Sourced)

Server Time: 2026-11-11 12:55:22 | Transaction Pool | Autorefresh is OFF | Go to stagenet explorer | Go to mainnet explorer

Network difficulty: 12400130 | Hard fork: v19 | Hash rate: 103.334 kH/s | Staking Requirement: 100000.000000000 ARQ | Fee: 0.000000050/byte + 0.000090000/output | Median block size limit: 1024.00 kB | Data From 00:00:01 [h:m:s] ago

TX Types Legend: Registration: 🏁 | Contribution: ⚑ | Recommission: 👍 | Decommission: 👎 | Deregister: 🚫 | IP Change Penalty: 📋 | Stake Unlock: 🔓

Arqma emission (fees) is 41481831.239012659 (1063.558611759) as of 2062833 block

Transaction Pool

(No Of TXs: 0, Size: 0.0000 kB, Updated every 5 seconds)

Age [HH:MM:SS] Type Transaction Hash Fee/Per kB In/Out TX Size [kB]

Transactions In Older Blocks

(Median size of 100 blocks: 1024.00 kB)

Height Age [y:d:h:m:s] Size [kB] Type Transaction Hash Fee Outputs In/Out TX Size [kB]
1422333 02:235:04:29:07 0.0996 8e32f14079d383a994898051557b17e450fef9d60dd05661f929886f5fa4d6e6 N/A 11.674476928 0/1 0.0996
1422332 02:235:04:30:59 0.0996 00a7fcae92b49a5c9817a3b1cea094a16ec3a281b5b040824a5dabc4e63deef5 N/A 11.674482495 0/1 0.0996
1422331 02:235:04:31:43 5.3633 e28ce312dd5b8ac02d5a071918a52b8d1bdcee84e263ceb8ea235baaab8352f9 N/A 11.674493432 0/1 0.0996
bece884343082c71e56bb49fa3d396e8c5c7191c9c169e14fa910dc454e078b9 0.000002680 ? 2/2 2.6260
4828e717f28ecc19e8a1e1db09d0517a86cce307ba20aa3c3dec368737e656e2 0.000002690 ? 2/2 2.6377
1422330 02:235:04:35:24 0.0996 3e5e82c3a90aac5f17a63ed59d1978dba436a259f0d1378bb0bf144c5aee07eb N/A 11.674493628 0/1 0.0996
1422329 02:235:04:43:38 8.3867 40e7044f5c68bdb46f6c0c1d3f8d8674d8a3695613ce9d4400280d38a9bb10ee N/A 11.674507695 0/1 0.0996
6e092f20d2867e0d63caa9c0e05ea3fb804a33294e493178b2267aee28dd42b6 0.000008500 ? 9/2 8.2871
1422328 02:235:04:56:00 0.0996 4942cae028addaa412a8872b4b092d6f6ac8b1ee536ce52cbcae82464b7513c4 N/A 11.674504762 0/1 0.0996
1422327 02:235:04:57:18 0.0996 d932ebde42b9e0ad560cdda2357537312614d8ee37e3bd1a0df7413d287b99f1 N/A 11.674510329 0/1 0.0996
1422326 02:235:05:01:04 0.0996 1076688e1f5ebc995f31dd5d6c6c1bb7d699deb25bac71c8228d9dd0f737a871 N/A 11.674515896 0/1 0.0996
1422325 02:235:05:03:25 0.0996 f8d0a787789bc20164b715b27649b9c821ec9f8c343abd4afae0195efb6bbe6d N/A 11.674521463 0/1 0.0996
1422324 02:235:05:04:12 21.2979 e0524aaa729104c89c959608d211aff04d277fae3bdb6c327a83f4352a8bde86 N/A 11.674548790 0/1 0.0996
8c11be53870015b2964dc868346f898c793c1048a6ff4074a1513ad7d0bc3fa1 0.000021760 ? 25/2 21.1982
1422323 02:235:05:09:04 0.0996 34f05ab3f4a5f20e063be8450a5ea9c0330d92764c7dbcac3e6e1fd7328f30f1 N/A 11.674532596 0/1 0.0996
1422322 02:235:05:09:41 0.0996 f239e5566dbc0b9c5743ecfee15964c7ac070fda03b7693ac3f4d71766492bf0 N/A 11.674538163 0/1 0.0996
1422321 02:235:05:12:18 0.0996 351867171a136800391a846d9b44dc0d4eb793e7670378c6e4ce3d5a1025b0dc N/A 11.674543730 0/1 0.0996
1422320 02:235:05:12:26 0.0996 62bbc9efc080d955fe7feeb74b1c79dd8578832e240de50c6cf4a3e0198018c4 N/A 11.674549297 0/1 0.0996
1422319 02:235:05:12:40 0.0996 ea15f3cdb532aae7fb969665296add741e00f1c2e5b829b3857946fe7dac1d2f N/A 11.674554864 0/1 0.0996
1422318 02:235:05:13:26 0.0996 665d9d618bca625372b9589408419856a3884374a8ab881c9a3a0a3ebe902c79 N/A 11.674560431 0/1 0.0996
1422317 02:235:05:13:46 0.0996 3bd2b8914fd31c591915fb7824ec0f5e3afc9a7f20a1fe8f7b2366cc229c0523 N/A 11.674565998 0/1 0.0996
1422316 02:235:05:15:23 0.0996 20c570e1d9a60b4c81185a1582d823f448ff6c983dead5758603fcd6bc5c4465 N/A 11.674571564 0/1 0.0996
1422315 02:235:05:16:07 5.9658 81a3a900dd45c7fe074b7c4cf8fa66983658b21cb3eb2b237c966ecfb46f1e68 N/A 11.674583141 0/1 0.0996
60854ee95dd7ed8a5ed3bda6a130f6583ac18a8665dcf9a937af57b518c37d81 0.000006010 ? 6/2 5.8662
1422314 02:235:05:19:04 0.0996 4bce5ca06e6fef98e49e86a78a1389f6113365a142a667902bb1b7a8c16f38ba N/A 11.674582698 0/1 0.0996
Prev
Current Page: 32025/103141
Next

Service Nodes

0 service nodes awaiting contributions, 5 decommissioned service nodes, and 40 active service nodes.

Service Nodes Awaiting Contributions (0)

Public Key Contributors Operator Fee (%) Contributed Open For Contribution Min. Contribution Expiry Date UTC (Estimated)

Inactive/Decommissioned Service Nodes (5)

(These service nodes are currently decommissioned for failing network obligations, are not earning rewards, and face deregistration soon)

Public Key Contributors Operator Fee (%) Decommission Height Last Uptime Proof Blocks until Dereg.
c338966f59c208f065e570e4631dced159118467b174e2cadc0bd59ff4768987 1/12 2058211 05:19:06:57 None (deregistration imminent!)
4891102bd9138ff3246de548e768dc3105a976540a06987d7ec79bfa9762e592 1/12 2058211 00:28:02 None (deregistration imminent!)
3a695a55e9442573865950ec85b393e7ade3a76690b62d0e992f32f246943bd1 1/12 2058211 00:27:01 None (deregistration imminent!)
361f463346d3409705042d85617b51e1c61f8821cc3c21f16ce9034d5b761c1f 1/12 2058213 05:19:19:27 None (deregistration imminent!)
8481f7ee5c2cac4312f37dfeb10131a2e64b1f8ec3fbd477056eae13afae9ffb 1/12 2058218 00:29:23 None (deregistration imminent!)

Active Service Nodes (40)

Public Key Contributors Operator Fee (%) Staking Requirement Last Reward Height Last Uptimr Proof Expiry Date UTC (Estimated)
75ed97a747c6b790917a62befd733ec67df8a7b5a9861baa432521eaa788d2e2 1/12 100000.000000000 2062794 00:14:18 Staking Infinitely
2c9277494767de038291669f392ceb66b3889c23c574ab42db08e0b48ee8a7bf 1/12 100000.000000000 2062795 00:13:38 Staking Infinitely
781efae048bb90829a0c7ce9f4c9c34e572d236955e91f4b3c86a85effa632d5 1/12 100000.000000000 2062796 00:12:13 Staking Infinitely
848ad910440f790d4a687cad83b333f99dec1fb47bae617c7a02db65b2f1c244 2/12 30 100000.000000000 2062797 00:40:25 Staking Infinitely
80a869c7963e4c92ccd1032749e29b33e7e943f4e70cbe8d9a3110115a0a53e3 1/12 100000.000000000 2062798 00:04:31 Staking Infinitely
ab1264fe8acaba585069c1fb0afe0804a97bc00ef269c17231b7994024851111 1/12 100000.000000000 2062799 00:25:41 Staking Infinitely
139595b1c4670eb35a9cc6d32b6c351c53422d6ebf9405d0e2de6edb09afa5f2 1/12 100000.000000000 2062800 00:18:59 Staking Infinitely
c6c5fce08eef76dca701248665f0586f83da2243ba13781899abc525b3572063 1/12 100000.000000000 2062801 00:00:27 Staking Infinitely
d0c12445039e0a505ac7ed209987dae411ba6e5ff44de6a16290a3ed4d2dd8b0 1/12 100000.000000000 2062802 00:47:50 Staking Infinitely
d3e9da49cf45266c3a0270253b0e2921dcbf939cfa52e5de31130d9ef5fb921d 1/12 100000.000000000 2062803 00:40:44 Staking Infinitely
+ 30 more ↪

click here to see the full service node lists (at most only 10 of each list are shown here)

Uptime quorum for height 2062831)

Public Key Last Uptime Proof Expiry Date UTC (Estimated)
Validators 10:
0: c0671e35dbd790174fbcd06c6694f094b85616147105cba63ce17ed82861e6ef 00:23:33 Staking Infinitely (N/A)
1: ea0b61a95cb6928e1f9c4656c52fffff6be197bc062cb88aac78744fae30108e 00:03:55 Staking Infinitely (N/A)
2: 8657c397133e857f186f33100dabde6f6129bb24f712ac0c35cf58c76ed55638 00:13:56 Staking Infinitely (N/A)
3: ff589e7960742d37662170d9deedca2875bdb20e56d3e847ca409d724ce1513c 00:28:35 Staking Infinitely (N/A)
4: 2c9277494767de038291669f392ceb66b3889c23c574ab42db08e0b48ee8a7bf 00:13:38 Staking Infinitely (N/A)
5: 0a23d89cbd41b85c5bffec0f53289536393e1a91a6537caf7b2064d97f92f7bb 00:12:47 Staking Infinitely (N/A)
6: 4a407bb5161d9ad488e4feb1ce4870d5076d223d24160476275f2e292c290d21 00:39:52 Staking Infinitely (N/A)
7: af591de4390b7c96bab0312158a390b186bf4064e306538b51b5621bbc314185 01:04:30 Staking Infinitely (N/A)
8: 0f709021b1005db0d397f474bd5c0df052cfc5571e02d97cd1015e5e5fbdb75e 00:03:57 Staking Infinitely (N/A)
9: 2083e7a16cef72aced08ba92106bf9cff6725bede937ff82c1156fd7fa2f3c7a 00:50:45 Staking Infinitely (N/A)
Nodes to test (35):
0: 781efae048bb90829a0c7ce9f4c9c34e572d236955e91f4b3c86a85effa632d5 00:12:13 Staking Infinitely (N/A)
1: afb246351ed7e9eadff997ae1ebcfcdd297bfabfc15398a8202ffcf1e3ceeb54 00:15:03 Staking Infinitely (N/A)
2: 078b975522c60602de3efe3c67b0c56cca233d676621baa061b52dfd5cd95aa5 00:13:54 Staking Infinitely (N/A)
3: 3a695a55e9442573865950ec85b393e7ade3a76690b62d0e992f32f246943bd1 00:27:01 2026-11-21 08:49:22 (in 10 days)
4: 61e2be6d333af323b8a750ca47475615ab2d46e9bcd9952050e58aa526144d72 00:46:58 Staking Infinitely (N/A)
5: 210e9b3fbb83325a9491bcd0eaae2d6fa38424f3ddae681d2562d1d2def18ee6 00:45:17 Staking Infinitely (N/A)
6: d3e9da49cf45266c3a0270253b0e2921dcbf939cfa52e5de31130d9ef5fb921d 00:40:44 Staking Infinitely (N/A)
7: 75ed97a747c6b790917a62befd733ec67df8a7b5a9861baa432521eaa788d2e2 00:14:18 Staking Infinitely (N/A)
8: ab1264fe8acaba585069c1fb0afe0804a97bc00ef269c17231b7994024851111 00:25:41 Staking Infinitely (N/A)
9: c9839bdce086483c6fae8ede8600e4410c5dcd2a431148689480ddfd4c6c9363 00:02:17 Staking Infinitely (N/A)
+ 25 more ↪

Uptime quorum for height 2062830)

Public Key Last Uptime Proof Expiry Date UTC (Estimated)
Validators 10:
0: ea0b61a95cb6928e1f9c4656c52fffff6be197bc062cb88aac78744fae30108e 00:03:55 Staking Infinitely (N/A)
1: 050e45639e86a90ca465c5194642d9fee300ac170acdbb2c0144fc8ebaaf6b82 00:25:38 Staking Infinitely (N/A)
2: 4a407bb5161d9ad488e4feb1ce4870d5076d223d24160476275f2e292c290d21 00:39:52 Staking Infinitely (N/A)
3: d8c32dc9adb51fd5fa02f49733cd1d1d5e963030e2700b80e6a5ff8274e0d623 00:13:57 Staking Infinitely (N/A)
4: afb246351ed7e9eadff997ae1ebcfcdd297bfabfc15398a8202ffcf1e3ceeb54 00:15:03 Staking Infinitely (N/A)
5: c0671e35dbd790174fbcd06c6694f094b85616147105cba63ce17ed82861e6ef 00:23:33 Staking Infinitely (N/A)
6: 5bdd85d7e9169eaef5712ec27fcabf3fb206c1b3ee8149ff3ab94a59e8ca4caf 00:43:01 Staking Infinitely (N/A)
7: 210e9b3fbb83325a9491bcd0eaae2d6fa38424f3ddae681d2562d1d2def18ee6 00:45:17 Staking Infinitely (N/A)
8: af591de4390b7c96bab0312158a390b186bf4064e306538b51b5621bbc314185 01:04:30 Staking Infinitely (N/A)
9: 1afa41446b3b542142527a0209142817a76a6bf3428f780b6a3b27513f884a4d 01:03:22 Staking Infinitely (N/A)
Nodes to test (35):
0: ff589e7960742d37662170d9deedca2875bdb20e56d3e847ca409d724ce1513c 00:28:35 Staking Infinitely (N/A)
1: 848ad910440f790d4a687cad83b333f99dec1fb47bae617c7a02db65b2f1c244 00:40:25 Staking Infinitely (N/A)
2: 8657c397133e857f186f33100dabde6f6129bb24f712ac0c35cf58c76ed55638 00:13:56 Staking Infinitely (N/A)
3: 781efae048bb90829a0c7ce9f4c9c34e572d236955e91f4b3c86a85effa632d5 00:12:13 Staking Infinitely (N/A)
4: 0a23d89cbd41b85c5bffec0f53289536393e1a91a6537caf7b2064d97f92f7bb 00:12:47 Staking Infinitely (N/A)
5: 078b975522c60602de3efe3c67b0c56cca233d676621baa061b52dfd5cd95aa5 00:13:54 Staking Infinitely (N/A)
6: 80a869c7963e4c92ccd1032749e29b33e7e943f4e70cbe8d9a3110115a0a53e3 00:04:31 Staking Infinitely (N/A)
7: ab1264fe8acaba585069c1fb0afe0804a97bc00ef269c17231b7994024851111 00:25:41 Staking Infinitely (N/A)
8: 4a9a479460d135c51723254462919ff51e4b692f2bc4aedafb26316494f45a64 00:43:46 Staking Infinitely (N/A)
9: 0b09899be6193bb10bb252ee33e199780786497486deb4e1eeb2f21059dad52c 00:28:41 Staking Infinitely (N/A)
+ 25 more ↪

Uptime quorum for height 2062829)

Public Key Last Uptime Proof Expiry Date UTC (Estimated)
Validators 10:
0: 80a869c7963e4c92ccd1032749e29b33e7e943f4e70cbe8d9a3110115a0a53e3 00:04:31 Staking Infinitely (N/A)
1: d8c32dc9adb51fd5fa02f49733cd1d1d5e963030e2700b80e6a5ff8274e0d623 00:13:57 Staking Infinitely (N/A)
2: 2c9277494767de038291669f392ceb66b3889c23c574ab42db08e0b48ee8a7bf 00:13:38 Staking Infinitely (N/A)
3: d3e9da49cf45266c3a0270253b0e2921dcbf939cfa52e5de31130d9ef5fb921d 00:40:44 Staking Infinitely (N/A)
4: 0b09899be6193bb10bb252ee33e199780786497486deb4e1eeb2f21059dad52c 00:28:41 Staking Infinitely (N/A)
5: 0f709021b1005db0d397f474bd5c0df052cfc5571e02d97cd1015e5e5fbdb75e 00:03:57 Staking Infinitely (N/A)
6: 0a23d89cbd41b85c5bffec0f53289536393e1a91a6537caf7b2064d97f92f7bb 00:12:47 Staking Infinitely (N/A)
7: 5bdd85d7e9169eaef5712ec27fcabf3fb206c1b3ee8149ff3ab94a59e8ca4caf 00:43:01 Staking Infinitely (N/A)
8: 45f9349a3ceee3a75d6142204286d37dacf81c1f9ec01a65e7b716269726635d 01:00:11 Staking Infinitely (N/A)
9: 078b975522c60602de3efe3c67b0c56cca233d676621baa061b52dfd5cd95aa5 00:13:54 Staking Infinitely (N/A)
Nodes to test (35):
0: c98ab9fca45aec5e9c8ea6f7dd0660b3567e3691d3cfbc4e4b035e737706160b 00:29:49 Staking Infinitely (N/A)
1: 781efae048bb90829a0c7ce9f4c9c34e572d236955e91f4b3c86a85effa632d5 00:12:13 Staking Infinitely (N/A)
2: 2772f9140b7e96fdeda176b2c6f077c49268b51997227552ff053b78624b8fd6 00:14:00 Staking Infinitely (N/A)
3: c338966f59c208f065e570e4631dced159118467b174e2cadc0bd59ff4768987 05:19:06:57 2026-11-21 08:21:22 (in 10 days)
4: 61e2be6d333af323b8a750ca47475615ab2d46e9bcd9952050e58aa526144d72 00:46:58 Staking Infinitely (N/A)
5: 2083e7a16cef72aced08ba92106bf9cff6725bede937ff82c1156fd7fa2f3c7a 00:50:45 Staking Infinitely (N/A)
6: afb246351ed7e9eadff997ae1ebcfcdd297bfabfc15398a8202ffcf1e3ceeb54 00:15:03 Staking Infinitely (N/A)
7: 1afa41446b3b542142527a0209142817a76a6bf3428f780b6a3b27513f884a4d 01:03:22 Staking Infinitely (N/A)
8: 4a9a479460d135c51723254462919ff51e4b692f2bc4aedafb26316494f45a64 00:43:46 Staking Infinitely (N/A)
9: d0c12445039e0a505ac7ed209987dae411ba6e5ff44de6a16290a3ed4d2dd8b0 00:47:50 Staking Infinitely (N/A)
+ 25 more ↪

Checkpoint quorum for height 2062832 (determined by block 2062821)

Public Key Last Uptime Proof Expiry Date UTC (Estimated)
0: afb246351ed7e9eadff997ae1ebcfcdd297bfabfc15398a8202ffcf1e3ceeb54 00:15:03 Staking Infinitely (N/A)
1: d8c32dc9adb51fd5fa02f49733cd1d1d5e963030e2700b80e6a5ff8274e0d623 00:13:57 Staking Infinitely (N/A)
2: 8657c397133e857f186f33100dabde6f6129bb24f712ac0c35cf58c76ed55638 00:13:56 Staking Infinitely (N/A)
3: 781efae048bb90829a0c7ce9f4c9c34e572d236955e91f4b3c86a85effa632d5 00:12:13 Staking Infinitely (N/A)
4: 45d356dd899759aa4af68034e6c9442cf4e92cc9304096403c92285357f8c03f 00:43:00 Staking Infinitely (N/A)
5: c6c5fce08eef76dca701248665f0586f83da2243ba13781899abc525b3572063 00:00:27 Staking Infinitely (N/A)
6: af591de4390b7c96bab0312158a390b186bf4064e306538b51b5621bbc314185 01:04:30 Staking Infinitely (N/A)
7: 1afa41446b3b542142527a0209142817a76a6bf3428f780b6a3b27513f884a4d 01:03:22 Staking Infinitely (N/A)
8: 139595b1c4670eb35a9cc6d32b6c351c53422d6ebf9405d0e2de6edb09afa5f2 00:18:59 Staking Infinitely (N/A)
9: 75ed97a747c6b790917a62befd733ec67df8a7b5a9861baa432521eaa788d2e2 00:14:18 Staking Infinitely (N/A)
10: 0b09899be6193bb10bb252ee33e199780786497486deb4e1eeb2f21059dad52c 00:28:41 Staking Infinitely (N/A)
11: ea0b61a95cb6928e1f9c4656c52fffff6be197bc062cb88aac78744fae30108e 00:03:55 Staking Infinitely (N/A)
12: 4a9a479460d135c51723254462919ff51e4b692f2bc4aedafb26316494f45a64 00:43:46 Staking Infinitely (N/A)
13: 4a407bb5161d9ad488e4feb1ce4870d5076d223d24160476275f2e292c290d21 00:39:52 Staking Infinitely (N/A)
14: 0f709021b1005db0d397f474bd5c0df052cfc5571e02d97cd1015e5e5fbdb75e 00:03:57 Staking Infinitely (N/A)
15: ab1264fe8acaba585069c1fb0afe0804a97bc00ef269c17231b7994024851111 00:25:41 Staking Infinitely (N/A)
16: c0671e35dbd790174fbcd06c6694f094b85616147105cba63ce17ed82861e6ef 00:23:33 Staking Infinitely (N/A)
17: 2772f9140b7e96fdeda176b2c6f077c49268b51997227552ff053b78624b8fd6 00:14:00 Staking Infinitely (N/A)
18: 078b975522c60602de3efe3c67b0c56cca233d676621baa061b52dfd5cd95aa5 00:13:54 Staking Infinitely (N/A)
19: 050e45639e86a90ca465c5194642d9fee300ac170acdbb2c0144fc8ebaaf6b82 00:25:38 Staking Infinitely (N/A)

Note: The quorum shown here is the currently active voting height which is not necessarily the latest quorum. Quorums can only be voted on after a number of blocks have transpired.

Click here to see the last 1hrs worth of the stored quorum states

Last 5 checkpoints

Height Block hash Checkpoint Quorum
2062832 c1d486854dc01b6ad3964e6f14cada290c2d4fd0b6d9143983552ba287772c17 2062832; 20/20 signatures: ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓
2062828 d6e5720598a217f246b6ccd7406d965eb26c8a086bfd8deb1dea857acb82d3d4 2062828; 20/20 signatures: ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓
2062800 5de52aa27e1cc864f5040813051148479ac04217ea0174904264d9d4d0028281 2062800; 20/20 signatures: ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓
2062740 fc56a38394036e5d0e2c21317a6bb89360ca1571ec1cc45c7f9e52bb54e1f45c 2062740; 20/20 signatures: ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓
2062680 23670fcd646d658ca1bf8836787800f7efdf190caf3599a0291c4f5f6e94a4c7 2062680; 20/20 signatures: ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓

Check here to see the last 50 checkpoints

No javascript / No web analytics trackers / No cookies / No external resources / Open Sourced
Explorer Version (api): patches-2025-08-25-05fdb31 (8.0) Arqma Version: 10.0.0-4b067e8c_Release
Latest source code
Forked from: onion-monero-blockchain-explorer
Copyright (C), 2019-2025 arqma.com