Pedro do Espirito Santo Sampaio (born December 21, 1997) is a Brazilian singer, music producer and DJ, known for the songs "Sentadão", "ESCADA DO PRÉDIO", with Marina Sena, and "Chama Ela", in partner
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 0xae24a140e8fd0f6738b56721f93f4fb6a39251a2cf1cbcc4c8b932ee7bc0f913. 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/44ea534b-53d4-4ffe-ad66-f1678a9779f3.json and https://artists.proofprofile.net/proofs/artist/44ea534b-53d4-4ffe-ad66-f1678a9779f3.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 0xf0c8d00277e54999a0976a669ac3a385d4a5345a74f83409f98db689fd4b9f34. 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/BRWMB2301411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fe01b3d5d579bbf04db9cc1a9baab65b443c99aa5ebd11f3a6d2e60b4e441d9. 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/USUG12309805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d16d39f0a3b52a2d2f5a8ee04d36421b5f0f1162ec1d94afd15f52c8326a5b4. 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/BRRGE1908455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa8ced1207a5c2a19e98fb031c49d0b0bf887a1714f5367c32dee099d903f81c. 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/BCM112300086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec7e28a99d544516dbc0a834cf80551f1da2f0071907156a41b90baa3e16bdcd. 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/BRWMB2400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0c8d00277e54999a0976a669ac3a385d4a5345a74f83409f98db689fd4b9f34. 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/BRWMB2301411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ab9b8c9d399bea0bff54ae4b972d4b6265fa0135256faafcb3e3e310bc02e5b. 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/BRWMB2000376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d16d39f0a3b52a2d2f5a8ee04d36421b5f0f1162ec1d94afd15f52c8326a5b4. 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/BRRGE1908455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d16d39f0a3b52a2d2f5a8ee04d36421b5f0f1162ec1d94afd15f52c8326a5b4. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/BRRGE1908455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59ec18384c6221af9ff57f14bc96baea7bb3860c2173c3630bfdd823c04a93db. 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/BRWMB2301693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0c8d00277e54999a0976a669ac3a385d4a5345a74f83409f98db689fd4b9f34. 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/BRWMB2301411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7904e75719511b313ec36422894082f90eff7f05a88633698f49c83f8243014f. 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/BRWMB2301692.