Marco Cardenas (born June 29, 1967), better known by his stage name MC Magic, is a Mexican-born American rapper, singer and songwriter known for singing and rapping, both in English and Spanish. He is
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4da49cf58ace770c65d2606cbe5b75d6ccc6afb32e0361bdb1a38062bd0f33e. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/482f2f19-1407-4aca-a5ab-a75a85e2cbd0.json and https://artists.proofprofile.net/proofs/artist/482f2f19-1407-4aca-a5ab-a75a85e2cbd0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc214948428eac9aa931ac6b8ca595baa52e0c9342f6c6823d64fb9cd7b6e7217. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USCGH0726243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6657803adf21e4872b3c7401e603125f1bbdce17d2197bc005a1bb479e51c904. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USY280749935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b09ffcd0a1618ac62122c13a2ff0bac61359eb07e97f7a76e5afffb91c9f732. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USY280749936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e7b8447049a0e9822ebdd65b6f6d542175568ae52033d76c8d60a1e6169a0aa. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USY280749938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c3a80ede607d4362e7db6a5602816d6dc8669b1b071bdb5f251590b0af5d39f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USY280749940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8309d2b203bd7ba1dc9eba85ffdedd74b6b423ca57427b1f517b9b7c91fb2fb2. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USY280749941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeba2779904670bb60abcd12fc44df1eb3f0c73516cbcc0446daaec51094666a8. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USY280749942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d55089f974d0321d15446b4c87225b2c490791939e7d69fb1d18aafc2d5d1f9. Chain 2 (Bitcoin): anchored in block 958613 (2026-07-18T21:35:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USZXT0813890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x365e9e168929bfe0505fb1af3474884b54f1e52c48b705f97c7a0acac98cd4e8. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USZXT0813895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f673c084c508da285c61b200f5701697b838a8dfe6e04d0ad40c8017f597449. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USZXT0813896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60c46c35260bad774114fcfd3ef7a88d689a81f4215ba11c52ae762c9dbdef48. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USZXT0813897.
Toast to the Party (feat. Chino Brown, Fingazz & Jah Free) - Single
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31648498478e23e1d5e13f335fc790fa4f91487299b5fff3e913a3c3d3561c9d. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USZXT1061706.
Diggin (feat. Lil Cece, Snow White & Twista) - EP
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x989b853a32c1e456dc62edcd8417bbebdb26d69f26594c0e928265f5793789d2. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USZXT1018454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc601a8fea660e9770bc5f8ffd2fbf0cd038230e3bad3bb6ca1c35e48ce3eab93. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USZXT1061702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72e2cbb7b9fa252a491de6c20ec434a3bb06630bbfc46067e113e449449fb4b1. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USZXT1061845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f42614559bed66217c5c1f3505f6a050bd7da0dbcb74571bc845fb4164429f1. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USZXT1061850.
Magic City Christmas (feat. Abrina, Dj Class & Eli Fresh)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04ac5acd8f75a457270d829fe8d693340869cc193f6fa1be93b78f87fbc63196. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USQY51478297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2b4ff29c0a51f49e208df2dc0323c084f6b9459c1233677f2b635d7ee1f52b1. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA2P1913172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c58237de9d6cc4dda0756e66c807ab1235889862e5b739031633a511020a51f. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T02:05:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA2P2415511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8a495d7c919313a05d5f682d1854a034b3e4a4f72996968bd7dd4628c19c159. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA2P2435276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6f645298f30db8f0ed191983678c4262cd6cd84f9472ea3a730db7d3e2bb732. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA2P2449999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27bf5f2df51833f5afe54668ed332e3aee74fb540fb7e590ba1136bde1fdd89c. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA2P2450000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4a1c7dc4dec97c946d459fe4b04822b36e56d2df44dc17489f945626f51227b. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:22:31Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA2P2449998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0803b261067a46e4eb047f8d12524d16a74059be8b060c7bdecb37a063ff2ef1. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA2P2450004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f59762e55838c90cd024a96ad7c4741547bd9edfefb148247f139ba683605e5. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA2P2465177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f233380954b85ea16ee4cb2f46e09f7af6b291481751b80bea6a79c7468447a. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAEC1935880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78cf3264ccd66a19f379a66e3fec3245fe9bcfac73e1b7eb01896c01b832f002. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUYG1060940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56d34d997d8165ce0810c53b8cd65164689ed2f8ef48363e724b2751c9b8b95c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUYG1047639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e899b3146e3db4b24a6c30d84c78dc4467ac994b6e3286bf0701aa774ae4476. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USLD91757643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x733cca7de44f39089a5aed0dde91e11ce1227898c1b16d660b7907358e58d2a6. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USDNB1452704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa8c19c6451d9055b1d6bd11b772d0c66aa14802a248c7a031b50e11df322c58. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USPRZ1100125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7284dfd733bfa02539232a2d4bb0a184f551af6da9eab49f88e12358a3b6ff57. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USDNB0853004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32a00243900bde1b3c75c77606a75a38d9ee67096d455b30a68ab5c0605a88f9. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USPRZ1010200.
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc3f207b80656a4151bde2fab92d81f1f5e727eba2f3274d10314bc1721fad3a. Chain 2 (Bitcoin): anchored in block 960218 (2026-07-30T06:57:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMFME1309482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22092629efadad8d86c1c51268183696fd9d93d3b3f6685fef39bb45f7666bf5. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMFME1309487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7534b7830880316e0a3ef9d3848f10e4caeb57d9d76f50755fc3af59e0ddd1b. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USDY41945762.