Mariana Fernandes de Sousa (born 19 February 2001), known professionally as Mari Fernandez, is a Brazilian singer, songwriter, businesswoman and instrumentalist. She became known for the songs "Não,
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 0x456f41374708b672882429f36f5314708e1f2c74cddc80140952edfedfd98b7e. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e9c40535-3f15-4a75-acb8-a2b2592d643c.json and https://artists.proofprofile.net/proofs/artist/e9c40535-3f15-4a75-acb8-a2b2592d643c.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 0x8ef4805372c479348da548355339bc5abf8b9db890888af90de38ace979b13ea. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/BCFWR2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e912e7ae932c82f57741b8ea7b82993d5b3ad56c3dafffef0fe0f9dd8c9717d. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/BCZT72100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ac306d5f0f4c7b6de015fb9234c9eb9eae883e7219596afbc470294d57e23f3. 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/BR90B2101892.
Luau Amazon Music Mari Fernandez (Amazon Original)
Ainda Não Tô Pronta (Ao Vivo No Casa Filtr)
Ainda Não Tô Pronta - Ao Vivo No Casa Filtr
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fe836d6234950d6d1c8041241e722d869565e79e0c5ee02c2981b3c24ee25c1. 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/BRSME2102417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04e2e10c545ee16301e8b06e56424f5f2bb6e0fe74864e4550950ad6663e44e3. 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/BCZT72200027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46f07a904a46172824375b45a7e9a77be7fde3995d51edd70f8799451d48f7ca. 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/BCZT72200022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ae79d041a14bf4f6142321ad31676fa0a885e501cba1aa6c567f79f52666712. 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/BRSME2102423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ac6494c58c28a60dc0c79a17e719e0a98aec0e52084da02e244a10f3a406206. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/BCZT72200034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b2e34d35d1ce0100b61892afa3190a9ccaee0e2a4098db09e2cfd3ff592cc46. 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/BCZT72200018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9020601320be17b048ab4b645404111045e182646634bf568778a4928a8a76b5. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/BCZT72200031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ce4abf5c70da4e286d54d45131d000fdf4d12d0df6d2b977194f8b6f6e04968. 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/BCFWR2100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x501ef63bdc008a872fbe6c697911e980dacaa3d6df3f8ee08e8da02fc1515f2b. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), 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/BCZT72200028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f202d1293bbe6c173660a8de8a70adf6ed1c9c3f533fd904f60081d98ed0202. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:47:00Z), 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/BCZT72200029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46f07a904a46172824375b45a7e9a77be7fde3995d51edd70f8799451d48f7ca. 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/BCZT72200022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb386ebb52028b4b26ac23195858805bc253b558345aeb9c9ff7a8587b3c016d. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/BCZT72200067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaee2d5e1d91c20c875e3b6dc3378032cdc3f091274204e95a6564b3fddb0058f. 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/BCZT72300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ea293c16cc627bc1c55978d27d338eff666c27d72327e73471f16b15a830e14. 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/BCZT72300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1835dc073cc7d82debeacaca80551a0166abe7add39e7ab671a0fff1d60f8196. 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/BCZT72400040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eb6a66394788e742334e84ab0bd6c4d94a2841d436e0426f18cd9216c69cc32. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/BCZT72400121.
Se Quiser (Anytime) / Lábios Divididos (Labios Compartidos) / Vivendo de Solidão [Ao Vivo]
Mari no Barzinho (Ao Vivo em BH), Vol. 1
Meu Tchau É Uma Vez Só (Ao Vivo | Teaser)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x406b5d33c7c41ddfe29685236b06e1323152233d73ce8c844edf771508e279e2. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/BRWNV2200220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bc0d2327656eebdde504617609a051cad7255dd0d1a568f806f2a3aa17c3529. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/BCZT72100014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46f07a904a46172824375b45a7e9a77be7fde3995d51edd70f8799451d48f7ca. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/BCZT72200022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ce4abf5c70da4e286d54d45131d000fdf4d12d0df6d2b977194f8b6f6e04968. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BCFWR2100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd42366568e162c21764d89ec1617d9042b154bc5eb4c9e7eddf13b2db23503d. 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/BCZT72200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04e2e10c545ee16301e8b06e56424f5f2bb6e0fe74864e4550950ad6663e44e3. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BCZT72200027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8e091411f3f2ca1eddf8ea25ba5cf85be94402b364b5d5dcd01d49847cae577. 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/BRUM72300031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22272d09272f50271fdb2e7955f343cafa2a0fd5eb240e68f374c1f84e058a8a. 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/BRUM72202323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x219c7a65149af3b0982593c687e2f33813b0b8828cc8aa7ef822209d318e942b. 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/BCCIW2200081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12f12c082f537c69da30a3e11bbb429fe16e3be2e92cf93b1e60b28c6deace56. 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/BKKNP2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3ea47882fd83eb9656399aeb9f5142720f988c12bdf6f3444f5d1788edde569. 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/BCDMP2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbc1ca33bf50df1eec279530455ad91e259e50d21b5b8b274795cc4231df14e2. 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/BC7JC2100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c1959f323b11a38b1e86ddafe66b22bc5f0c146d0152ef6f949a627344878e2. 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/BC7SK2200100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c1959f323b11a38b1e86ddafe66b22bc5f0c146d0152ef6f949a627344878e2. 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/BC7SK2200100.