Michael Berrin (born May 6, 1967), better known by his stage name MC Serch, is an American rapper and record executive. He gained fame as part of the hip hop group 3rd Bass, who were active in the lat
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 0xb87e5f588ea89669b755771f95d36be3eda49c08ba3d7f4cbb5df0587fc847e8. 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/78f5568b-88a6-405c-9e1a-3e23284043d1.json and https://artists.proofprofile.net/proofs/artist/78f5568b-88a6-405c-9e1a-3e23284043d1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
M.any Y.oung L.ives A.go: The 1994 Sessions
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 0x68b04e38e5973ac7394904e04f62519ab771c7208a5a30df140d272f7bcc466c. 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/USA560614447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb7a7d9d8ec7cf7fa17706ad2f93e9311ed8a88cd572616c66531e6ba020576b. 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/USA560614451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d5803969a8f19dcbdf1a22b0420477cbfbf696740c4b1fc31b4b922a0541c66. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/USA560614453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2333a4998a5e0a547070b3c1f601aca79308a584a4662ad4e746cef218593b9b. 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/USA560614455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34dfefa3c2b30fb568e4490e1ffd3e8c8d2fdab55cc4375eba6d3defaf083806. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/USA560614446.
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 0xd417cf5501530588490df96cfd02de94a9a3add6b90c6d022fdb863018c74b92. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/USA560614448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd56e8b29c283ead05efef5b8f5e0a4f308694e9c8364a5f8d09d3289a6460756. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USA560614449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b5564b0320edeb37001a2712811d074151d67801d9cce4ed71d04d05cf9c6a8. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/USA560614450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebbd6114ae569457835f03313dc5088db2f5dea2b80e7c36303c9eb64cbe4d7e. 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/USA560614452.
The O-Zone Files: Rare Demos and Unreleased Tracks
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9de6c289696172f7d98d91ccfba003408f59b77088c801cab35208fc021aab1b. 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/QM6N21969318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfe80c16d29a4a8eb63647efa187ed4f8639fa32660c80a9df26fc2466f96cf6. 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/QM6N21969336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfba33e88b23c6964cc35232e43c043e2e7334504cebf43a535fa53f20b2e513a. 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/TCAGN2245724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x514031b12799895fafde2926b6dbde9b7f6c22950fc735ce0d4f9d85df949385. 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/TCAHN2326704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71c1c8c001a772446cf7a52d8fbb7ab683a934287b943179654300e6690e3ea6. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/QM6N21969314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e3ed793c6403f7ecf7f71be2220b51e810f04c7af1f2ce7a2362ca407a7e54e. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/QM6N21969335.
New York to Germany (The 20th Anniversary)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50fe5032948aa950c49c9dd99c0c373f1829937f3a06ecdf48db3ca58cae2d0b. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/DEQU31200028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4280a77b4d8ba8b391c1a72b090827d54bd36ac1fd0c2b171df6c088d33b8101. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/DEBL60359140.