Kofi Boakye Yiadom (died February 2, 2020), known by his stage name Kofi B, was a Ghanaian highlife musician. He was known for songs such as "Mmobrowa", "Bantama Kofi Boakye" and "Koforidua Flowers",
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 0x18ecb7139ebdacab0add3ee4ac211d1ff9a8e32840779ae1abd8e173a15f8385. 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/59c6f5fb-4cfa-4c1d-b922-9719bae2aab9.json and https://artists.proofprofile.net/proofs/artist/59c6f5fb-4cfa-4c1d-b922-9719bae2aab9.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 0x08051616e8f0fb362e40de8aea0ab60e30fe6e9e0fd96bfe5828a6600004b1c7. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/DEP551910872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0b789c6fe78d64b2000dda021b950e59aadf0a0c92e51dff413685b4df454e2. 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/DEP551910873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc928ac73e25b3d829af791d7d75deadbce6be32a67f5b9581ce60f0ba04af98d. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/DEP551910876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x222736f8189a9b443e0ad5b4a985d0774492e2034c9188e30c3037d4b33156c6. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:47:32Z), 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/USDHM0903798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafe98d4d91ecf4e1118c8d24871d062fdca84a027ad72597ae697c12caed6117. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/USDHM0903807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e8ecf95bb36ef3262fe2095299ad3b65e10b93cd26e1050785f4885c7f42782. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QM6N21435667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a7082064972dab22c8155b32d148ca7d5cceefd7b5b7a376faf7e0c0b97886f. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QM6N21435669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a87620842be1e860f6d668be1298bace44ebc17dd69783ef585376b904ad140. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T16:58:47Z), 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/DEP551910892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf485b978f4e51edae9de5a823a8676d716462ab353302ae478ef214435ce826. 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/QMDA61469101.