Federico Galvis Patiño (1991), better known by his stage name Maréh, is a Colombian singer and songwriter. He has performed his music on stages in Colombia, Mexico, Peru, Spain, and the United States
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 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 0xce7fbe96fb4ee5c9a8f9906f3385859b002c48e4c4e10c3360a343fe2ecccc7c. 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/e6fefabc-b933-4696-8011-02ece3f44e62.json and https://artists.proofprofile.net/proofs/artist/e6fefabc-b933-4696-8011-02ece3f44e62.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 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 0xf70defbb096964460e949926cf783833e7e638b724fcd1369c73c549857c03f2. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/COA921801101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd18757851665cb1799ed37021557346f05d45350296ab2f7a1a0d739995e16cb. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/COA921801103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x134b66ab2c921b8cfdcd38b2756471cafc8af6dc45f9be3d3a14e86bfee724dc. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/COA921801106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf70defbb096964460e949926cf783833e7e638b724fcd1369c73c549857c03f2. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/COA921801101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd18757851665cb1799ed37021557346f05d45350296ab2f7a1a0d739995e16cb. 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/COA921801103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cd2b5dc33f3f651a7d57ac3d5db650b6d7f68b1b86f0486ee79262c1ab09e22. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/COA921801110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e4bf7bcc15008f6e1ab3b02da5af1c1b178a73121a39b200416ec1d10a16b3a. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/COA921801111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x911c7e7ed295bcfc6980291273677af2b50064780b3008fda4db2d811bc19637. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/COA921801112.
Amuleto (Acoustic) [feat. Edward Ramirez & Hugo Candelario]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x290d0108993fe3253638a07facd4f44f2312e07155c9b3f0106283e0fa9abc59. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/QM6MZ1894187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d89ec95896d83dd349ff9ef6f556b009ec77495da14454bd6208a8f4d72b650. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GBMA21834531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bf4ba8b98fc3e0c8ba4c76e657c3707817b2778185da860fa77bd7c33698d88. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/COA921801104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09bac6a749d67df2bfd471ca1269a0592196350d9162b63fb36d1204f8bb7277. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/GBLFP1938220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d5b2fdadcb88fac797aaacd3ef27454e7e9f1f87bf23df369cde7b5d519043e. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GBMA22095656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30ab438e0dd86314cdd614b4febfd42fa3a7bd6f04f256769ef0414dd9a179ad. 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/UKXN22048219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1530bfd3ef0d345df1dba9ae6f33cefbe9dc2ab7235b77a554c58a6602de3e47. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/UKXN22099516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54e82cb53f495c052041bffbe964f375db111cb7ea896e35ee99250c53195017. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GX3Q92098329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc623c78b80cfcd6e7694daa97027e36636fbd64da74d387d870685749497911. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GX3Q92098362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd91a964f092a6be1cf984cdc694db320dd98650aaf8b7af4b37984db39f2a60. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/GX3Q92098355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10fff8de80b665f44d0448e104257f60b63d285414804b3d8662bc2886b2eee4. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GX3Q92098357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64a6428b067ebc8dda06044d2e3b9f2555cf539545ee35e567724638023ab4dc. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/GX3Q92098358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ca7c24fc96dece4672cee587e7d0dafe8b99cdd31a45f0188590d3aa6ec2c03. 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/GX3Q92554206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd47e13da8280b3d51fbee739ffa4ca3888ff33692609c977b59d215b7f0bfe36. Chain 2 (Bitcoin): anchored in block 958666 (2026-07-19T05:00:30Z), 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/GX3Q92554205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a16800d99e034122f55d78aed6a8d72e41581ac9695f778ab5133a9f907e02b. 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/QZ7362000294.