Gilberto Passos Gil Moreira (; born 26 June 1942) is a Brazilian singer-songwriter and politician, known for both his musical innovation and political activism. From 2003 to 2008, he served as Brazil'
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 0x9557ad247e94eb61849c5ffa833dd129ecf8a8e63ec8cbb4de7bebd53d4a2206. 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/ca72d7b7-b63d-42ed-971c-9d9bea6674a2.json and https://artists.proofprofile.net/proofs/artist/ca72d7b7-b63d-42ed-971c-9d9bea6674a2.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 0x82ebff4bbfcd9de4ad42b53022b2d7e79f8b0ea5a81518f016f4cc214002c736. 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/BRBMG8000118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa841e40c17de6972991fe764c7278a21a22022d70a56c3796c99971dfc71ddff. 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/BRGGL0100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdfc3108f90800c707bddac5432f16c9c5e2b829d314a9998b17d63edfec9525. 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/BRGPG0900056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ef25b0720df607ccdf7139a293741697471f0eaf0549e8c93e85dd492160d9b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BREMI8000304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52aae488fce47c0dc2a188dbace2c8331638da93654b705adc785c195037020c. 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/BRPEY2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31d310b3334dc20b994eb52e8bb8fc3cfe30786af32894a6fa5b23853264b600. 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/BRCID9400093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b87571dd683cc7a6b00978f91d891cbc1c02f9d892205865762797ba087bcd7. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/BRBR00400025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc960d12e351dc227a09f653fdfe457e244068d1fb39f63ab07d14776a4e2aae4. 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/BRE4H0700040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f7e3bf769eea1ebd686a9de21b7ef77ed258c7792c41cc1d1f922c191ecc191. 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/BRBMG9009964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63042084e125cb54a7ca826c185be447e178fc1b59a4b837eec94b1677b72ee2. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BRRGE8400366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85ba1d0396c81d1ecb68dfd1d012ce42a4fde111d5f9ff5cd33ef7ded72cfdc0. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BRBMG8600257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84693f761aacd1c2f768c6ce9358123e05ed50bb2528096fad648f9294e0d345. Chain 2 (Bitcoin): anchored in block 960241 (2026-07-30T09:58:01Z), 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/BRPUI1300032.
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 0x3c5520d362ff03269a30c13b620e6717a24a2d2fc7d60db3502a0847ca95d4aa. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/BRWMB2200633.
Marcha da tietagem (feat. Trio Elétrico Dodô & Osmar, As Frenéticas)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad176d6f0e126fc5874397a84c6f3258f1c0fbdb8c889c6401f25cde6a280b7f. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/BRWMB9901424.
A força secreta daquela alegria (feat. Gilberto Gil)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4547ffd2abf31f51e9d19ee6d8cf566089179b94e45113d3d55ea8710fcfa99f. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/BRWMB9801117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eec0dbf1c94ad1053a364c3ef124867d61018d2a366e32bb28b9e62e6581128. 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/BRUKM1400027.
Lamento Sertanejo (Forró do Dominguinhos)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3f0eb9a453413f47f38c392a16dc93ace9ed80371751afc1da486126515227d. 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/BRB9B1100008.
Garota de Ipanema - Ao Vivo no Coala Festival 2022
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x534c0f26f8c06cb9827734a9b9e84eb41a2144287d9064c2494ee79582a794c9. 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/BRGPG2200082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe011273c06359332d47a4fb8f16e7184367a920845463f7f3eb509001bd08aa4. 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/BRBMG8600189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9f02762f47073489a9fe062ea189e376259b829337f2e8af9fb2a7ed60352ec. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BRMCA8000064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x704cbce57fe4d1476ef033194b277a03307caa1763eb9c3cc1c04a5d647c09c8. 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/BRM9U1800009.
As Grandes Décadas Da Música Popular Brasileira
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x118a68fa09cfa1ddb61b216e171db37a9689e611c93498a6eb16d6846d614c14. 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/BRBMG9402160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x729e89498efc7b6f87e4c349d95ed413c59d41075b903172a8723e4b4dc5f242. 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/BRUKM1400046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ccf9e983ba904140f1411b432c58ef3a25d181540a5de4d9000ef44100a85fa. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/BRPGD9600305.