Big Brovaz (pronounced as "brothers") are an R&B and hip hop music group from London, England. In their seven-year career they released two studio albums and eight singles. There were three line-up ch
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 0x21f7b485d64cd79a853e941527ca3f68aad7e92d62b714a1bdc4b341f0edb962. 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/f6b6322b-28e2-4181-a9f0-4c6e9269da8e.json and https://artists.proofprofile.net/proofs/artist/f6b6322b-28e2-4181-a9f0-4c6e9269da8e.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 0x43306d53b8eb2abb89877405da2fbece5da2840f7eed1788c0c75cb6b53b59a8. 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/GBMEC1000075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa47e9a2ddfb59ed39a55b450be288b945696c08034a6744fe6f406e1dddedd01. 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/GBMEC1000087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9703b0f23edf5e428a4a290fee8cb0f89c3c367f4c4a8f74fe9e717fc6961f4a. 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/GBBBM0202096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe47dc01d0d40961612cb05ca469ac1b26cd4f23a69cd81815a9c95b218e2e9a. 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/GBBBM0202101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb0e06391a6427a3952ba32826406bc333da47b8ac0dc31cfd1714ecfced2b7c. 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/GBBBM0202107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5671e5872edf642061026b73ac71847e8aa0f37b2c442fc8d4a489fdc3b10c3. 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/GBBBM0202106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x106e21bda6f3665dd5971aabe5b3e1d8f6f1b8210c11b77de34da7e710f2e440. 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/GBBBM0300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bd50b951158ad3e75d71643a4b721b9e9c839ef20f1cce1a0516d8b3e339e03. 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/GBBBM0202155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa68ea91bad32ae31bc62ea4d3e2c7aca3f87fdebc820b58d719112c61bfafada. 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/GBBBM0202108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1024df35066d907f5b2b17958d5b5ea20a22207ec73c06bbf05d8fe8c12c8e05. 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/GBBBM0202102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d68a7622314c5dd686fb637803eff1530cba6841ed631e126b78b5a6a2a29e6. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T16:58:57Z), 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/GBBBM0202168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbac71f69178f1b77a0856b732fa4567ef1d0459a79d2a0572c6c93925642378b. 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/GBBBM0400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b415063bd317ca24b1046e98810ea3d4550353d9ee10a819740b77c9021f656. 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/GBBBM0400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59642ce64bf7b3ecae76e6a286b347d48cdb9ffe4932ced1868edd99c9f708d5. 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/GBBBL0300066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc85d809cb3dec912db177f04a632e32ea70b9128adb9f98d3b1b5d4c4b939d93. 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/GBBBM0300013.