Marília Dias Mendonça (; 22 July 1995 – 5 November 2021) was a Brazilian singer, songwriter and instrumentalist, posthumously recognized in Brazil as the Queen of Sofrência, a subgenre of sertanejo mu
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 0xf82531716e523560254949283388591de9b9176b9dbd0285823e42031ee62679. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fab64368-460e-4bb0-9b20-39ebc2a96900.json and https://artists.proofprofile.net/proofs/artist/fab64368-460e-4bb0-9b20-39ebc2a96900.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 0xe7378ad459b06868425e41edd0059e57e410f35c7394785aae41749d70f95668. 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/BRWNV2200185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28a4cdbb152c251d53145d1e1be827c996e4b1e55bc9a79447af44241ebde95b. 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/BRUM71707006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x846396e2835d21924e2f74d7578ddb79f302b53ec5999fe592cbcf3868b89048. 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/BRUM71900076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d90d908c55ecd1b460280e8182b48cf984946378c3523189e038908e37524f7. 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/BRUM72101642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2389d3f8a4b1081c5bdced1285318ee23ceeb9f652a6b54c697a2bca1b456d2f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BRD1E1700015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86efb9f742c04ab3d1caf7004309b4051a0369fccb19827b7c12ea76475d052f. 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/BRRGE1606106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe108cb121e8232bcf791995c10afe7dcc9cb1866957c12b2ee1bb8827272f89f. 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/BRWNV2100081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebeac3604eb34fa79bc5dcde1cafd93c9a7895a542dc6df98c4b8c2eb856788b. 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/BCK5V2100002.
Eu Quero Ser Seu Anjo (Ao Vivo em Goiânia)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe56d7d136b8e194c8e0d34993d8da3adc41e9693be1039c6c3684f46bbeaceb. 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/BR1841600107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe56d7d136b8e194c8e0d34993d8da3adc41e9693be1039c6c3684f46bbeaceb. 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/BR1841600107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8fa968ec82603465f36f6a8c154cb22fb16c41f0d804441e19414ec2d2a13df. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZ5AB1872146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0529e2e11e0bd9afd2acbc18cfe4eacbeb42233772fad4e56d75e641e44dbf4. 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/BRYRN1700063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd647b21104dee98fbd2d1e44663790fad044ceab019a38bf8323149b9ad30176. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/US7VG1523163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6439d8a2cbe12d79465d627fc9a300a8e47adfe17b3f40ca0a3e083e068a1fae. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BRZGF1500013.