Tomas Adedayo Adeyinka (born September 2000), commonly known by his stage name Offica, is an Irish rapper of Nigerian descent. During a youth soccer career between 2016 and 2019, he released his debut
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 0x9256a9e60dc6980d73ae4b37b64cbae553271e2b09bc78b879fe0c4716cbfcfb. 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/cd750e4e-e0c1-4165-b48b-9fa68afff0bb.json and https://artists.proofprofile.net/proofs/artist/cd750e4e-e0c1-4165-b48b-9fa68afff0bb.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 0x3fd9c06335cc03fe7f91d560edcc36708755f1b32426eca0127b7f2ee3a84af7. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/GBX721900563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ddc81a9dce9112813de58657fb2dbfe3c485fe7eb5873ab445990a0dbfa1aed. 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/GBX721900639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x023b52daea1985b5e9ed817ee11f10f5b6b954eb7e94ac6c03b0772b2f3536ff. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBX722000250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7353e8aa38e96709168af12d3d823c4b950c308742480e460d7cd79822c940d4. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:43:47Z), 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/GBX722000147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf80e9103115639aa35d68199b6c4d8b24346de64ec9499eafe8a370250867ba2. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:12:28Z), 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/UKXN21985826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc05c1ab6ace05ec1b54089b5980474386c5c7e8715f3a50e645da7d23451fe7f. Chain 2 (Bitcoin): anchored in block 956425 (2026-07-03T01:28:11Z), 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/GBX722100231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01c8de6dff02f97c11cf4c26c45d21b25239fd90d95b071519c583911309c234. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GBX722200050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79a6ebb2dc83616c70bf79e38a84712c20076372a5a6a4c0c71c5b4a670811f1. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/GBX722200206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46a13ff6a695e7274860f096720e3868ab977e6ae918125375e2ff1c6efc9955. 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/GBX722300074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x680960c8dff631b8f2b3215265119fc251ad1865353a55fe0b57285134e87fe2. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/GBX722300442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10ba86380152c324d759e32c223aa7ab0d84bac51fb110885e1d768ab94db9e2. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/GBX722300438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc248350f10176ffafc62d9c8fd5c3dc16b27be4216af7ffd7af1af120f366beb. Chain 2 (Bitcoin): anchored in block 958498 (2026-07-18T04:54:58Z), 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/GBX722300441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a9a2df88e2222c1c69233772631f7b7e5ff3a8a8966b1f5a80c5af5879e545b. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/GBX722300447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf514e50760bbf85c91a28c04de859de2ba2970d394e249fc07d7017e21929bd9. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/GBX722300044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x680960c8dff631b8f2b3215265119fc251ad1865353a55fe0b57285134e87fe2. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:47:39Z), 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/GBX722300442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b619757866a397b592acc2d1ed1bb4b63e17388e556f46c3967af74ac40720d. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T10:48:25Z), 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/GBX722300547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63a1ef7a547cd2f26ba8ed0ab605e9453ee5b70cd985c9035edb83865cfc83e5. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/GBX722300544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x581161156bb457a8dd3335b4cef046fa3212240817a161589587e1bffa491def. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBX722300624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbec770fd00f6e6c476abb79ac4466231e2c63566d0fb31315c41eea949307dd1. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/UKXN22400186.
Dumb Flex (Remix) (feat. Ivorian Doll, A9dbo Fundz, Offica & Poundz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x488edae51825ffcc590866ed4cb5364e31618931c7c8873a54621f59fdb9373b. 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/GBUM72100893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1212e61bd613dfa3b5d0ea0db019952c7bb41b282c71bef3c385b68553d4aa9. 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/ZZOPM2002040.