Hailu Mergia () is an Ethiopian keyboardist, accordionist, composer, and arranger now based in Washington D.C., United States. He is known for his role in the Walias Band in the 1970s, one of the most
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 0xf0b3f6a111a04ff5fcd45eb6421af7873a6b52dea1ccf6f5ee5ea82fb7e66a8c. 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/bbfc9034-e3c1-435e-8287-7a92954be103.json and https://artists.proofprofile.net/proofs/artist/bbfc9034-e3c1-435e-8287-7a92954be103.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Hailu Mergia & His Classical Instrument: Shemonmuanaye
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 0x4d5082675e6e2730d39c0b41e89e99f3f930573dc9395bcf4025de8afdce28d6. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QMUGB1360401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39ba7c9ad2c12f350dd9fb77aa8ed127e886a99886774656962a15290a239f78. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QMUGB1360403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1df4d4d41b89aadfb568f359bac723971da52d5d3ffb71ca085c18f899b9669b. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:59:06Z), 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/QMUGB1360404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc89d525a3d6f4098744a3a0c9740900ceaaa92640c2197722151e4e9cb830759. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QMUGB1360405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x206388babfeb220a41d193c805c075938616bedb19805349af29a6ef40817523. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QMUGB1360406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa11847aad7fd9d50a6ec9d4b842ed904fddc83b7aa2932777609e43b5e21627b. 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/QMUGB1360408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda2079d3998a52ec85385f859a7a1ae931ab399f0b091b9c7249141b473ef41d. Chain 2 (Bitcoin): anchored in block 957671 (2026-07-12T07:35:31Z), 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/QMUGB1401203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8cb1bc5e54ed7bb7d697b98350fc7121ef491d2d1e1f37865f1b1bd0c00b20d. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QMUGB1401205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15fbdf5606b4ee8a5be6b4d88b4cff784137049d195cac595e941d35467e6224. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:51:35Z), 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/QMUGB1401206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc81dd82de79683bcc8ed66f51ed9cf0c6a172681b696ff51ae512de5bcc4cfd. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:54:43Z), 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/QMUGB1401209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f3157e2c58495223eff6e093039e886a665b0d2e2ac40a11ff0d4007ef57b8a. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QMUGB1802802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b1e980971b94cf31b2d1398d830270cd86e1d917e1924ae3e428d43c265a0a6. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/QMUGB1802803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x708461d777de9cb88b961db5ea06a46eebc52613d66a1eabe93ee86e770a6367. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QMUGB1802804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1de565470b24a3934b33936477cac60938cfd3e39b32f5015fb3d4c47b4a1db0. 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/QMUGB2003701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbab914881b9b62ed275a808b3b844371f164b015de9adb8664112ab3b23c8773. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QMUGB2003702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cfaca7e35db6e66e1a400a062f4d3b330831efa6ebe22dd4ca5ea66dbbc4569. 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/GBEXH2000044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad9344450eb6f45130f66631129b54d2d77e222fd4e6925dbf6c3311eebeee57. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/DESV91833408.
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