Girma Yifrashewa (born 1967) is an Ethiopian classical pianist and composer. He is director of the Ashenafi Kebede Performing Arts Centre of the Addis Ababa University. Early life and education Girma
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 0xa12f42c9c9a8839f41065810f4c742b54d5020a520724eeeec1caf90a6910ebe. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a4f09228-d5b2-4b35-b4a9-bde52ac893e4.json and https://artists.proofprofile.net/proofs/artist/a4f09228-d5b2-4b35-b4a9-bde52ac893e4.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 0x876f90f090aa4c262e6816ed1bbbf5ee30f0db00601fa15e3b4151b61b11592e. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T02:14:51Z), 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/USVML1313001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe6bfdc1735cd9bbfdc3e9f6d479652d57e98c1faaa4ff278b68a4d2a637bee2. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T22:46:16Z), 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/USVML1313002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf3c0baa61314f97a244d186494d3e6c6862b61df39dadd5c897da617df69b83. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/USVML1313003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8e442c19433e2b969aa39cdeddcde718b36ab8f2ca175a10e3ff63d845e186b. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:32:23Z), 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/USVML1313004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd922bf951bce24f969f7d2315eed35261aa4246aef9f468eeea5413c995075dd. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/USVML1313005.