Gerrit-Jan Mulder (born February 5, 1975), better known as Brainpower, is a Dutch rapper. Born in Belgium, he grew up in the Netherlands. Early life Gerrit-Jan Mulder was born in Antwerp, Belgium, an
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 0x39f28c65d4cbbc3c8723f43cad935ace2aca5e3923b206000ce9f55dcc534dd9. 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/5516dc45-12a6-40ce-81da-48902099dcae.json and https://artists.proofprofile.net/proofs/artist/5516dc45-12a6-40ce-81da-48902099dcae.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 0x8df2e42a82887d2e5e76493c6ec385326e73a09d14ee5b87a3ed86dd92c71626. 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/NLD320000032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x456ba825f98167d5dd8f7d31e59af311c611c82ee0337d009863025cd6f24b7f. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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/NLD320100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4a9d12f8a0a5742dc06a54c24df7b73a8fa404f4e6d5455c64d7e52920724ad. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/NLD320200054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x856a8c7a9d7ec1d3ad741c40d53e02e3a874e65b619b9de9d41cf1429e4188ad. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/NLD320200055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49bdba1da8a90d0ced32ce36abd09e5794bb676d2de731facf6d8e194733a44e. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/NLD320200056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe64e2c19aae6981acc450e4ecd399396022afdc98ae4ced2aeb35772147153bc. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/NLD320200057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa01f9b7bdb92f8667d5eaa6921507d4bc79d5dad4df135853c1d3ea1c3859b8b. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USSM10213878.
Bleedin' Organz (feat. Shabazz The Disciple) - Single
Een Mooi Bericht (feat. Anthony Heidweiller) - Single
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaab75f5852b66ae2d846439a78a8e26396196432f9671686576402ea909cc654. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T13:22:35Z), 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/NLY401400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f79aba6e8349d4d8ca446ca1940f13214f58638bf3494e14351c5e0bc481fc0. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/NLY401500009.
All the Same (Acoustic Version) [Live in the Hollywood Hills]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92aee9f75d3af23ef5aeb63a14199220ecfa2948062c3704f1f7fd53f58a1f6a. 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/NLY401900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0c4404b834d3b68d7e47bd33be293bc47b5637ddf530ad23ed6448f808abe80. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/NLY402000020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55e9548cd267e8cd599a1a40cf6f2281c85bbb87caee98319dae26da60204a6d. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/NLY402000017.
Door Merg & Brain (The 20th Anniversary Bonus Bundle)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d7d6abb4adf64cd5d6e8904411770e267b8591831de52f6dd1936090061b3cb. 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/NLY402100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0c4404b834d3b68d7e47bd33be293bc47b5637ddf530ad23ed6448f808abe80. 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/NLY402000020.
Verschil Moet Er Zijn (The 20th Anniversary Bonus Bundle)
The New York Sessions (10th Anniversary Edition)
Direct Uit De Mengtafel (Live in Paradiso 24 December 2002)
The Box P.U.R.E. Session (20th Anniversary Vinyl Master)
Basket Bars (The New York Sessions 10th Anniversary Deluxe Edition)
The Collabs LP (10th Anniversary Deluxe Edition)
Direct Uit De Mengtafel (Live in Paradiso 24 December 2002) [Deluxe Edition]
De Vierde Kaart (Acoustic TMF Dressing Room Rehearsal 2001)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x278e29237d8d55c6ada48accb6924519135b7557bb84e4263136aa0b7e8a59b6. 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/NLY402400020.
Lyricist (25th Anniversary Deluxe Edition)
Dansplaat (Live in Alphen Aan Den Rijn 1 Juni 2024)
Determination (10th Anniversary Deluxe Edition)
King Thing (Live in Den Haag Koninginnenach 2002)
Dub & Dwars (15th Anniversary Deluxe Edition)
Door Merg & Brain (The Last Mohican 25th Anniversary Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0201302cea05e6220671178d6340ef72205078d876b8a2286dd8de1fdbaa00f. 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/USUM71908941.