Machete Bomb is a Brazilian samba-rock band, hailing from Curitiba, Paraná. The group's leader, Otávio "Madu" Madureira, plays cavaquinho over a samba and rock and roll sound, creating a mixture influ
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 0xbae764f561956428cea4382231a077ea2b5e4d1c1e3967df3bd6b6b31857ef5a. 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/fcf37b53-940e-45ad-b4b3-1d5d4ec1a8a8.json and https://artists.proofprofile.net/proofs/artist/fcf37b53-940e-45ad-b4b3-1d5d4ec1a8a8.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 0x6a76d39da7eea6fb8c023ab8231d9f435fd151b18a441ffb81e4c1a62a11f494. 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/BRTO90300029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7bc23b28368d84e714854c3d0e1b9f90d4d5b85f02edc2e022612073a88fb1e. 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/BRTO90300033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00cf4276a6d5a9b24b8e522a5003f077b28c3f87649553eba03a995c8900f8ec. 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/BRTO90300034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65b605a6a67fb8c07af5d8764a30c9e13b40514c3f067a76350e2a975486babc. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/BRTO90300031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f08a9e4db992d5a975d22df3fa5e948169e83a39641d51f849adaed33a933d7. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/BRTO90300032.
Vendendo a Alma ao Diabo (Remixes & Acústicas) [Vol. 1]
Vendendo a Alma ao Diabo (Remixes & Acústicas) [Vol. 2]
Vendendo a Alma ao Diabo, Vol. I (Remixes & Acústicas)
Vendendo a Alma ao Diabo, Vol. 2 (Remixes & Acústicas)
Vendendo a Alma ao Diabo, Vol. 3 (Remixes & Acústicas)
Vendendo a Alma ao Diabo (Remixes & Acústicas) [Vol. 3]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c187f4cf7eeb1afeae05d27604e9886466aa835c9301a19470834161053726b. Chain 2 (Bitcoin): anchored in block 958558 (2026-07-18T13:44:16Z), 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/BRTO92000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9072f166edf990e2ea3e6db591c130e68d6f776ac72281efa38a1cea9d51fd3. 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/BRTO91900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8df4f10cf7b0033351afbb1d9d5f3d45d5c4ebd4364ef1e90ad919f5611d010d. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T05:10:03Z), 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/BRTO91900009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a07c437a5aee613e49a4f67d712c7cf531ece9d812778919e12545977f25bf9. Chain 2 (Bitcoin): anchored in block 959003 (2026-07-21T14:46:15Z), 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/BRTO91900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c2928d9b70bfba15762f635e7d91492a5ca2d08201de22db74a73b26c34aaaf. 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/BRTO92000003.
Tempestade (Um Encontro Hipotético Entre Almir Sater, Andreas Kisser e Jesper Strömblad)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6914235c5b3236d23ab9109cef1c44237fb1a85bd9a00950f7de502763ef0d23. 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/BRTO92200001.
Lockdown Terrestre (Em Floripa) [Ao Vivo]
Cidade Mal Assombrada (Em Floripa) [Ao Vivo]
Ao Vivo nas Trincheiras da Cidade Madrasta (Dia Mundial do Rock - Crossroads)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bae729092d0c47b2f8278244656a28574eedbef9fc7efd7b882d23eaef88139. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:23:57Z), 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/BRTO92400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1146dd12f7db266945e9f4c434d546b06118a3a8f351ec79b799a5c9b25c67f. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:57:28Z), 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/BRTO92400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eca719c4089e380b5bdc4855ec0b387fd51bd07ff3d34bd183ddfa546dc2c85. 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/BRTO92400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa04e68477e7143c7e90b4fa4625c43e077f975ebfdce73447a0946c0c2210c0b. 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/BRTO92400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x719adacc00fed4975467f19428870b41bd6fc15c45e047b8db454f8032774414. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/BRTO92500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa04e68477e7143c7e90b4fa4625c43e077f975ebfdce73447a0946c0c2210c0b. 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/BRTO92400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1146dd12f7db266945e9f4c434d546b06118a3a8f351ec79b799a5c9b25c67f. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/BRTO92400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7de86c28e21d385166472a2fc62e4781dd2b6300f0d4c46f2f06d77c73f81db5. Chain 2 (Bitcoin): anchored in block 958573 (2026-07-18T15:49:54Z), 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/BRTO92500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa374581ee4aaae8c3e823cb82e2d94afaec3f71db4a6efb3fb27cb3860338056. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:32:15Z), 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/BRTO92500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71f85cf2299b978323f1fd92e30d1a1510d073302a86f05531d24441c5905796. 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/BRTO92500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bae729092d0c47b2f8278244656a28574eedbef9fc7efd7b882d23eaef88139. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/BRTO92400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x646fa07ef114a680b9c781db2522b2d684cd188db844456000e9f0c433948eec. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:33:28Z), 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/BRTO92400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x077d78572903218d70fca2ab4df8fa6fc7891eb2aa4119cb233113be6239422b. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/BRTO92500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eca719c4089e380b5bdc4855ec0b387fd51bd07ff3d34bd183ddfa546dc2c85. 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/BRTO92400005.