Arqma Blockchain Explorer

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

Server Time: 2026-05-20 22:14:31 | Transaction Pool | Autorefresh is OFF | Go to stagenet explorer | Go to mainnet explorer

Network difficulty: 222000126 | Hard fork: v19 | Hash rate: 1.850 MH/s | Staking Requirement: 100000.000000000 ARQ | Fee: 0.000000050/byte + 0.000090000/output | Median block size limit: 1024.00 kB | Data From 00:00:53 [h:m:s] ago

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

Arqma emission (fees) is 38110204.239012659 (1032.279134209) as of 1946570 block

Transaction Pool

(No Of TXs: 1, Size: 1.9150 kB, Updated every 5 seconds)

Age [HH:MM:SS] Type Transaction Hash Fee/Per kB In/Out TX Size [kB]
00:10:26 e77afbdcf2b71961bb93151ea6ce1f5dc60de161ec667fe7e8be36862173a3d2 0.0003/0.0001 2/2 1.92

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]
1529730 01:273:22:51:50 5.2803 81fade9519446242c3d16578e5bd66a1bb288e05f5078abd0108130606c0c84f N/A 11.091672298 0/1 0.0996
96804089ecad7922972903ab9374c446704879f5fee652241116c732284ff7ad 0.000003420 ? 2/3 2.8164
f22bc6fcd60e85ca41f5c03f65da9e4ebdb077b0be8ab5c80a7158bc19c1f53a 0.000001860 ? 1/2 1.8398
1529729 01:273:22:52:29 0.0996 6e787d4672a0e198be89b85833a8231de127f6da9a26e67c78528cd6c53ea984 N/A 11.091672307 0/1 0.0996
1529728 01:273:22:54:14 6.7725 a125ddc98148c99233c7d35e74576c56382e27a1714ad1ebe6f24834935d9015 N/A 11.091684436 0/1 0.0996
2b5503873260eb9091f0f9485f86518fade8830a0e665d4be36f9bce304eafd9 0.000006840 ? 7/2 6.6729
1529727 01:273:22:56:22 0.0996 0db0b7fbc769211c627fefa6da10c9962cf6d2961b5e7670db007a83de21957a N/A 11.091682885 0/1 0.0996
1529726 01:273:22:56:43 0.0996 4bc379a62e789918cdab231f8063994bd9be5c42afd08cd1ba2d1ecbc19849a9 N/A 11.091688174 0/1 0.0996
1529725 01:273:22:57:49 0.0996 29d9d39a00c05a7fd2a656d4ecb8139ef2caa257bc714c59ca9ed2e8914c954f N/A 11.091693463 0/1 0.0996
1529724 01:273:22:58:53 0.0996 2c70d0c0b3168eec9df481052d8380777aba092267bbb2dc07bbce3b2f985613 N/A 11.091698752 0/1 0.0996
1529723 01:273:23:00:38 0.0996 1e9a26edc627bfa6dd449009a3453a9f75403f80db67fc5fd4d2117cee125d9a N/A 11.091704041 0/1 0.0996
1529722 01:273:23:01:42 0.0996 6a8f01197c5f58c11d7ba80d10506484afe1370005cc9ec7df8f572b930df28d N/A 11.091709330 0/1 0.0996
1529721 01:273:23:02:25 0.0996 3ade71075545b0df1cf09c25f3acdd451dbcd4dc0da093e469fa7b4ef99cc1eb N/A 11.091714619 0/1 0.0996
1529720 01:273:23:03:26 7.4170 cb5da87b74c0f1fbcdc8771fb81ae8ef041663edc2f9b31e1a5178902800d413 N/A 11.091727318 0/1 0.0996
4192aba9a76ad70b93d7723eb0e6a886142692e2aa8d4bfb53eb22b4013933f4 0.000001850 ? 1/2 1.8252
23089478a1a9c3a49b0bb7cff5bada43be27d2b3ccd64e5c90e82baaab56f422 0.000001860 ? 1/2 1.8369
e7c516c9740434a2c6be99e5238da6a1b9bed6a2b69d05d9b95851c76e3978ef 0.000001850 ? 1/2 1.8271
2f7fa1e92e4658143e8a80d42c065b9ba9668c7bd9f1d43c59eedbcd964ca0fe 0.000001850 ? 1/2 1.8281
1529719 01:273:23:04:51 0.0996 a3af09d42276bc451374db54d8ffedab47ccf9453bd8006359a215b01732bb5a N/A 11.091725197 0/1 0.0996
1529718 01:273:23:06:21 2.7305 738f86723a4a5a7931ef20fc5f0bab8a860b5d4cfc032ea2c20af9a818ee9c1a N/A 11.091733166 0/1 0.0996
2abddaba504db6ce9b763d244f559d279861ae38a4bea2aa93a71fd235403180 0.000002680 ? 2/2 2.6309
1529717 01:273:23:09:45 0.0996 b159771530bdea2293fe0691271e105d25f42fa3bbbb2574ac6959d6910c0980 N/A 11.091735775 0/1 0.0996
1529716 01:273:23:11:15 4.3604 f416a591b5f16655d6c4b60ec964ddcbd190dca9d853934ff37782cb9899b51b N/A 11.091745413 0/1 0.0996
9e0068c29f0e1bc8e6de1ca3e35a40f1fd0f98bd0709eab52afecdd178d01acd 0.000004350 ? 4/2 4.2607
1529715 01:273:23:21:26 5.9746 12cfcb9e6d7927e85ffc8dbae57f0d8460a40e20500bcfcfd6bcf5f735e712f0 N/A 11.091752362 0/1 0.0996
9a2a74d0137b5502702b4b1c2ecabc2186cc3ccfb5398fb198b098d63313343d 0.000006010 ? 6/2 5.8750
1529714 01:273:23:32:31 0.0996 3e749bc8ea6e25844ae02651ef72e6332858d3c6a7ae6cf11cff317a7d41db23 N/A 11.091751641 0/1 0.0996
1529713 01:273:23:36:09 10.8623 e282943afaa2543cdd03c46276ceee09eb72d5bf206dd2b20730c7ec1e46d496 N/A 11.091767860 0/1 0.0996
07bf52f8790406ca88a59c52166979cd9674947db5646416c703de6d035a6a9e 0.000002680 ? 2/2 2.6289
4b5f28be53d60f503bda9fcd37b3aff9f047be18e63e29bd8d62830759d44d5f 0.000002680 ? 2/2 2.6338
c3952cd0e3fdd7b0781064ae5eb06c71c5440d9dd0dafefec294a359a0843b6e 0.000001860 ? 1/2 1.8359
30bee04eaa8061db9cac532db6ce027b2528bd079a1a82f421acc18f3e73cca6 0.000001860 ? 1/2 1.8369
0f2d30a225eb21cf3eef93dbbe367b876f5a74a31910ae2675628cef2639d331 0.000001850 ? 1/2 1.8271
1529712 01:273:23:37:49 0.0996 8d6d4a9a8d85d523fbbec7880fd29bfec079e9d7d1ff2b6520315750ee91c200 N/A 11.091762219 0/1 0.0996
1529711 01:273:23:38:02 0.0996 c18c9602f6c005cc2e9c4bffd4d9f1aacf8282c2f971f94bc712c9fa4b2a45e8 N/A 11.091767508 0/1 0.0996
Prev
Current Page: 20842/97328
Next

Service Nodes

0 service nodes awaiting contributions, 0 decommissioned service nodes, and 52 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 (0)

(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.

Active Service Nodes (52)

Public Key Contributors Operator Fee (%) Staking Requirement Last Reward Height Last Uptimr Proof Expiry Date UTC (Estimated)
2f235e88eada0dcabd49b9f2ee0fcd1002dbfabfe7dc273dc445e1e8abc220c0 1/12 100000.000000000 1946519 00:10:32 Staking Infinitely
30f3281710c23bb2c9b11a8bc0a3f63876ad2d974a55f08db00dde2f1fce4f3e 1/12 100000.000000000 1946520 00:12:47 Staking Infinitely
81ea05da87ecfe7d707a13ded483e5a0ee257c3ff802cd01742185bc87d803d9 1/12 100000.000000000 1946521 00:01:38 Staking Infinitely
c99d98eadc123984ca4f9042e6e2e3460e43467a7136f61f7f0960ef92fec01e 1/12 100000.000000000 1946522 00:03:45 Staking Infinitely
5d21979e8b9332bfc583b3855b5e1b047080dce4609a21454595892ca797f514 1/12 100000.000000000 1946523 00:55:24 Staking Infinitely
28f7c771d9cd63b4c3d5c8261c153f7e05f23f67a562dc5c39635445e1d1d268 1/12 100000.000000000 1946524 00:13:14 Staking Infinitely
781efae048bb90829a0c7ce9f4c9c34e572d236955e91f4b3c86a85effa632d5 3/12 50 100000.000000000 1946525 00:29:10 Staking Infinitely
76e3e01fe63166ca4e448a2d9353486dbf966804c0eb51437d135fdd93e3eb3f 1/12 100000.000000000 1946526 00:07:30 Staking Infinitely
16927f2acef9455c357990988e651406fb3f5e6dcad09d28957d906b25ba9acc 1/12 100000.000000000 1946527 00:47:53 Staking Infinitely
25c736fc4171ff02f17977554a34af971fd88f979b31a4b0a2b842e7262f4bf0 4/12 35 100000.000000000 1946528 00:46:40 🔓 2026-05-27 07:34:31 (in 6 days)
+ 42 more ↪

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

Uptime quorum for height 1946568)

Public Key Last Uptime Proof Expiry Date UTC (Estimated)
Validators 10:
0: ab1264fe8acaba585069c1fb0afe0804a97bc00ef269c17231b7994024851111 00:46:26 Staking Infinitely (N/A)
1: 25c736fc4171ff02f17977554a34af971fd88f979b31a4b0a2b842e7262f4bf0 00:46:40 2026-05-27 07:34:31 (in 6 days)
2: 3a695a55e9442573865950ec85b393e7ade3a76690b62d0e992f32f246943bd1 00:59:36 2026-05-26 15:56:31 (in 6 days)
3: 33ef2ff577821dfc3e8ba0b6a7b62759f092c53d798cc1a9c5ba85f59f549efc 00:05:46 Staking Infinitely (N/A)
4: c442b8c2be6b9175211390d4dbf3d3c6b9c8132517335eabbffce8b68da71b36 00:02:42 Staking Infinitely (N/A)
5: 53b13c3b12f633765fad6a3af5e9910067af666c8c35940a5d0190ef05e86016 00:03:58 Staking Infinitely (N/A)
6: 30f3281710c23bb2c9b11a8bc0a3f63876ad2d974a55f08db00dde2f1fce4f3e 00:12:47 Staking Infinitely (N/A)
7: a5ae405941249e1cc812bdae01081cdbfe7963f1bc8d299e444effc2b6930195 00:02:41 Staking Infinitely (N/A)
8: aa78babccc4e6e29d3becac648489e6da5c375ae22566dd9cc65880210d81539 00:04:16 Staking Infinitely (N/A)
9: a382ea37422bc7715fb954fd567ae77c7b8db3bf92a2d4ac48025e0122832641 00:20:32 Staking Infinitely (N/A)
Nodes to test (42):
0: 94b370885630009cbe68165b641e51343bcb90aba151434230424f6e3ec4a6d2 00:32:48 Staking Infinitely (N/A)
1: 16927f2acef9455c357990988e651406fb3f5e6dcad09d28957d906b25ba9acc 00:47:53 Staking Infinitely (N/A)
2: e9ce4cbc023dd13600dd1b84e811838cccc09a169ab6cb51f537481242bddb1a 01:04:40 Staking Infinitely (N/A)
3: 64704fc7e91c0d73d5a05f608f0899b45e99fa711383057dcc59064a98c257ab 00:57:55 Staking Infinitely (N/A)
4: 45f9349a3ceee3a75d6142204286d37dacf81c1f9ec01a65e7b716269726635d 00:25:43 Staking Infinitely (N/A)
5: b98ee2847b18dc4e46be8e384d59157a67a5366ee8b03553c519b520e147ef65 00:55:31 Staking Infinitely (N/A)
6: cf8f65a97c31057a45dec63b065e23d0763c1ea88c7282fafd738e3e090ef01b 00:54:57 Staking Infinitely (N/A)
7: c6c5fce08eef76dca701248665f0586f83da2243ba13781899abc525b3572063 00:50:07 Staking Infinitely (N/A)
8: 139595b1c4670eb35a9cc6d32b6c351c53422d6ebf9405d0e2de6edb09afa5f2 00:37:28 Staking Infinitely (N/A)
9: 3cb0bba8f15c0902db46604f9fb6badeb0f611a645e4b29fb899342107c1f8c7 00:18:19 2026-05-28 18:42:31 (in 8 days)
+ 32 more ↪

Uptime quorum for height 1946567)

Public Key Last Uptime Proof Expiry Date UTC (Estimated)
Validators 10:
0: cf8f65a97c31057a45dec63b065e23d0763c1ea88c7282fafd738e3e090ef01b 00:54:57 Staking Infinitely (N/A)
1: 361f463346d3409705042d85617b51e1c61f8821cc3c21f16ce9034d5b761c1f 00:18:32 Staking Infinitely (N/A)
2: 30f9c742e16707fb9b0c9c2078ed750595e297e4a0f75b972794766e25447cfc 00:06:25 Staking Infinitely (N/A)
3: c99d98eadc123984ca4f9042e6e2e3460e43467a7136f61f7f0960ef92fec01e 00:03:45 Staking Infinitely (N/A)
4: 0a23d89cbd41b85c5bffec0f53289536393e1a91a6537caf7b2064d97f92f7bb 00:10:33 Staking Infinitely (N/A)
5: a382ea37422bc7715fb954fd567ae77c7b8db3bf92a2d4ac48025e0122832641 00:20:32 Staking Infinitely (N/A)
6: 12236cc40c8f77213e83e179cbf3bc3066a8e9b6a6666430791d76e39369dcbe 00:54:05 2026-05-27 07:34:31 (in 6 days)
7: 25c736fc4171ff02f17977554a34af971fd88f979b31a4b0a2b842e7262f4bf0 00:46:40 2026-05-27 07:34:31 (in 6 days)
8: c442b8c2be6b9175211390d4dbf3d3c6b9c8132517335eabbffce8b68da71b36 00:02:42 Staking Infinitely (N/A)
9: 4a9a479460d135c51723254462919ff51e4b692f2bc4aedafb26316494f45a64 00:08:36 Staking Infinitely (N/A)
Nodes to test (42):
0: 33ef2ff577821dfc3e8ba0b6a7b62759f092c53d798cc1a9c5ba85f59f549efc 00:05:46 Staking Infinitely (N/A)
1: 5d21979e8b9332bfc583b3855b5e1b047080dce4609a21454595892ca797f514 00:55:24 Staking Infinitely (N/A)
2: c338966f59c208f065e570e4631dced159118467b174e2cadc0bd59ff4768987 00:53:04 Staking Infinitely (N/A)
3: 3cb0bba8f15c0902db46604f9fb6badeb0f611a645e4b29fb899342107c1f8c7 00:18:19 2026-05-28 18:42:31 (in 8 days)
4: 3a695a55e9442573865950ec85b393e7ade3a76690b62d0e992f32f246943bd1 00:59:36 2026-05-26 15:56:31 (in 6 days)
5: ca0113d6999df9187b7959b602c7557cf9658a274fd89948c5aead79eb95a510 00:07:08 Staking Infinitely (N/A)
6: f9e9aa7608c8c134ff9c14ef92488c122b947fd27d8cfe31d6745546c462665b 00:06:55 Staking Infinitely (N/A)
7: b42fb5a319f9ef592ada30e483b64431d05386ba5692727d0e64a15802be3ef5 00:01:14 Staking Infinitely (N/A)
8: d3e9da49cf45266c3a0270253b0e2921dcbf939cfa52e5de31130d9ef5fb921d 00:28:35 Staking Infinitely (N/A)
9: b98ee2847b18dc4e46be8e384d59157a67a5366ee8b03553c519b520e147ef65 00:55:31 Staking Infinitely (N/A)
+ 32 more ↪

Uptime quorum for height 1946566)

Public Key Last Uptime Proof Expiry Date UTC (Estimated)
Validators 10:
0: c338966f59c208f065e570e4631dced159118467b174e2cadc0bd59ff4768987 00:53:04 Staking Infinitely (N/A)
1: 5d21979e8b9332bfc583b3855b5e1b047080dce4609a21454595892ca797f514 00:55:24 Staking Infinitely (N/A)
2: e9ce4cbc023dd13600dd1b84e811838cccc09a169ab6cb51f537481242bddb1a 01:04:40 Staking Infinitely (N/A)
3: 3cb0bba8f15c0902db46604f9fb6badeb0f611a645e4b29fb899342107c1f8c7 00:18:19 2026-05-28 18:42:31 (in 8 days)
4: c93716c955d7ced8be22fb112a0344fabde019949f2b26fedff327172ba6a973 00:39:29 Staking Infinitely (N/A)
5: 4a407bb5161d9ad488e4feb1ce4870d5076d223d24160476275f2e292c290d21 00:57:13 Staking Infinitely (N/A)
6: c6c5fce08eef76dca701248665f0586f83da2243ba13781899abc525b3572063 00:50:07 Staking Infinitely (N/A)
7: 139595b1c4670eb35a9cc6d32b6c351c53422d6ebf9405d0e2de6edb09afa5f2 00:37:28 Staking Infinitely (N/A)
8: 16927f2acef9455c357990988e651406fb3f5e6dcad09d28957d906b25ba9acc 00:47:53 Staking Infinitely (N/A)
9: af591de4390b7c96bab0312158a390b186bf4064e306538b51b5621bbc314185 01:00:13 Staking Infinitely (N/A)
Nodes to test (42):
0: 30f3281710c23bb2c9b11a8bc0a3f63876ad2d974a55f08db00dde2f1fce4f3e 00:12:47 Staking Infinitely (N/A)
1: bf84fec11377bd3f6a46c27484a8f46050274067047fefe4b15cfd566d68a671 00:55:22 Staking Infinitely (N/A)
2: 050e45639e86a90ca465c5194642d9fee300ac170acdbb2c0144fc8ebaaf6b82 00:06:10 Staking Infinitely (N/A)
3: 83b11eca71c4a2d77d256304fd422493ed4d290e3cb084bf76758d239fe9a0b4 00:23:26 Staking Infinitely (N/A)
4: c442b8c2be6b9175211390d4dbf3d3c6b9c8132517335eabbffce8b68da71b36 00:02:42 Staking Infinitely (N/A)
5: 0a23d89cbd41b85c5bffec0f53289536393e1a91a6537caf7b2064d97f92f7bb 00:10:33 Staking Infinitely (N/A)
6: 2c9277494767de038291669f392ceb66b3889c23c574ab42db08e0b48ee8a7bf 00:00:23 Staking Infinitely (N/A)
7: 45f9349a3ceee3a75d6142204286d37dacf81c1f9ec01a65e7b716269726635d 00:25:43 Staking Infinitely (N/A)
8: 81ea05da87ecfe7d707a13ded483e5a0ee257c3ff802cd01742185bc87d803d9 00:01:38 Staking Infinitely (N/A)
9: 93aeaadd2a426e4b78e8ddb88679d33d03e5e35c096095418db1dc69475c013f 00:11:57 2026-05-22 14:24:31 (in 1.7 days)
+ 32 more ↪

Checkpoint quorum for height 1946568 (determined by block 1946557)

Public Key Last Uptime Proof Expiry Date UTC (Estimated)
0: 16927f2acef9455c357990988e651406fb3f5e6dcad09d28957d906b25ba9acc 00:47:53 Staking Infinitely (N/A)
1: c338966f59c208f065e570e4631dced159118467b174e2cadc0bd59ff4768987 00:53:04 Staking Infinitely (N/A)
2: af591de4390b7c96bab0312158a390b186bf4064e306538b51b5621bbc314185 01:00:13 Staking Infinitely (N/A)
3: a382ea37422bc7715fb954fd567ae77c7b8db3bf92a2d4ac48025e0122832641 00:20:32 Staking Infinitely (N/A)
4: c93716c955d7ced8be22fb112a0344fabde019949f2b26fedff327172ba6a973 00:39:29 Staking Infinitely (N/A)
5: 5a67c6e399571ec4665cc61cc19a5e84eeab60cf51c4f75fac5eea24a33d87e0 00:14:20 Staking Infinitely (N/A)
6: b98ee2847b18dc4e46be8e384d59157a67a5366ee8b03553c519b520e147ef65 00:55:31 Staking Infinitely (N/A)
7: 4a9a479460d135c51723254462919ff51e4b692f2bc4aedafb26316494f45a64 00:08:36 Staking Infinitely (N/A)
8: de7f05e258ce90d2e33e7e62955c9f29daa1f9e5ab291884505203cf4cad83a8 00:44:45 Staking Infinitely (N/A)
9: 5d21979e8b9332bfc583b3855b5e1b047080dce4609a21454595892ca797f514 00:55:24 Staking Infinitely (N/A)
10: 3a695a55e9442573865950ec85b393e7ade3a76690b62d0e992f32f246943bd1 00:59:36 2026-05-26 15:56:31 (in 6 days)
11: 80a869c7963e4c92ccd1032749e29b33e7e943f4e70cbe8d9a3110115a0a53e3 00:45:50 Staking Infinitely (N/A)
12: 781efae048bb90829a0c7ce9f4c9c34e572d236955e91f4b3c86a85effa632d5 00:29:10 Staking Infinitely (N/A)
13: a5ae405941249e1cc812bdae01081cdbfe7963f1bc8d299e444effc2b6930195 00:02:41 Staking Infinitely (N/A)
14: 361f463346d3409705042d85617b51e1c61f8821cc3c21f16ce9034d5b761c1f 00:18:32 Staking Infinitely (N/A)
15: 81ea05da87ecfe7d707a13ded483e5a0ee257c3ff802cd01742185bc87d803d9 00:01:38 Staking Infinitely (N/A)
16: 0a23d89cbd41b85c5bffec0f53289536393e1a91a6537caf7b2064d97f92f7bb 00:10:33 Staking Infinitely (N/A)
17: 75ed97a747c6b790917a62befd733ec67df8a7b5a9861baa432521eaa788d2e2 00:04:30 Staking Infinitely (N/A)
18: 28f7c771d9cd63b4c3d5c8261c153f7e05f23f67a562dc5c39635445e1d1d268 00:13:14 Staking Infinitely (N/A)
19: 2c9277494767de038291669f392ceb66b3889c23c574ab42db08e0b48ee8a7bf 00:00:23 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
1946568 40cfb2873ba0fcd8ef4cd3b83929bb3af35ec0d45255881d08466e90962afcdc 1946568; 20/20 signatures:
1946564 a544eb0217bb8b7600a22d630ba11d853ad79d50338b28426f49f6a70133695e 1946564; 20/20 signatures:
1946520 65e66fdb5d527b26eb96f01894818a08635f17087dd2ce2e770b67a7328b48f8 1946520; 20/20 signatures:
1946460 1ede3e4f8d2518e921825d3ec94b9930a0d487694e781f69d6057ac9526be3eb 1946460; 20/20 signatures:
1946400 b24f01244b3f3598dd2fbd7766e3ca44b1466d2050b6a8448a6a10ab8dc8c89e 1946400; 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