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
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
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 0x38ec46f6a916ff1b49f24d1a36c9ecb021fc634562c43c377b4f377f0c4c6fcd. 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/GBMEC1000077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb8473298421d28c298b8065ce92162ea2396afe8f4c7b74f9dfb8c766a3ce40. 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/GBMEC1000084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa47e9a2ddfb59ed39a55b450be288b945696c08034a6744fe6f406e1dddedd01. 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/GBMEC1000087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2ff2b289f9b7787bd4ac826e18ce44ce73ed1e61cc6a249c00afd4a3562be84. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/GBMEC1000076.
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 0x518221dd04e7ad5daf9ec3346988d746220003cd58217363f70e6a22186cbec2. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/GBMEC1000078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4e387975ade08b3e57d573c3288aa9dc8d8655a37fe6548b9fb43d02cac701a. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/GBMEC1000079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70c7e548171c589fcb789533010a807d2d9ca97e8793542e61245bc2f02690bf. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/GBMEC1000086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53706f7b69e578dd625d654b01f523b06d73428fbaddb077a039da15d5767363. 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/GBMEC1000089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89f4f7c2a5291cec045524d966303d6cb595c63128c50f2dc0894d26d59e36ea. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/GBMEC1000090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fe5643a8421336a3bf254bfd881a4ef88fc4902dc404f62805bebb5519431c0. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/GBMEC1000091.
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 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/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 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/GBBBM0202108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c75a28d74bc9d137bc964b745748f2b86d8941740658828128bfc61509fa815. 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/GBBBM0202100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e9b9749b35a8eb44e1c998c67b0141ea93f217e49ac4ad5a26f27d8ac01d369. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/GBBBM0202098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1024df35066d907f5b2b17958d5b5ea20a22207ec73c06bbf05d8fe8c12c8e05. 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/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 0xf72c73b3e9c56a07d1b9805e81d728b4054a330b24c353721f605a0891600dec. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/GBBBM0202099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eea900e013e5f58b75620c271f8cc8167b8ef046995074c30d0bd4e26215462. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/GBBBM0202104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0f128d37f375219ab3dd76cca7a8d95ad0ff584d508616bc1be0dcc0eb1508c. 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/GBBBM0300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84afaec04d8bcd11e323ffed15681e797f2c72800b896cf3bcdd17cfb24c4015. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/GBBBM0202105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa779253cf2b462223825e498402d05bf07ffc07272001164e9b2cda8b9b65a2. 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/GX3Q92188490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25aafda69528a661d957d4c26e6fd0cb904a8e1ea757d63d4b1934523efd9e6a. 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/GMBA21473136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd773eef2dbbc47d1a2c3bd7c6b85009bbdc79d058d869b4354eb03c4ac337a1d. 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/GBBBN0400809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbac71f69178f1b77a0856b732fa4567ef1d0459a79d2a0572c6c93925642378b. 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/GBBBM0400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b415063bd317ca24b1046e98810ea3d4550353d9ee10a819740b77c9021f656. 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/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 0xe10f497aecb1f65214e4a1a4e23a9a5e0aa8a988ddafad1499d650344d873b8c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-22T01:18:20Z), 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/GBBBM0300072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf82545f8e7528d05dea575fcc00ae15428cd7cfbb977c12a5a74ca4b5f7c3a35. 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/GBBBM0300058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x887f576634f5b4e766f6c99d9c0ef9a7e4ec6273955d52c5a0ed81774606e514. 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/GBBBM0300095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc85d809cb3dec912db177f04a632e32ea70b9128adb9f98d3b1b5d4c4b939d93. 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/GBBBM0300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed9017c6061456b2cb93c96b3112855c3f7df3b8ef0d6277580a1fbb909c872f. 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/GBBBM0202169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd21d1e4d3b18807d5db4e169db5932c1cb52323e42aa325ec1f3d489a0d7d074. 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/GBBBM0202171.