Tilahun Gessesse (; 27 September 1940 – 19 April 2009) was an Ethiopian singer regarded as one of the most popular Ethiopian artists of the 20th century. Noted by his tenor voice, he was nicknamed "Th
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 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 0x494989d2e371fcc62bf174e0b40c2db505e7412a17d03d7bcac2a532bb368214. 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/cfdf9dc7-9eec-4b46-9bcc-4636553945a3.json and https://artists.proofprofile.net/proofs/artist/cfdf9dc7-9eec-4b46-9bcc-4636553945a3.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 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 0xfa44f1510e1ffc42b7e09307a0bb78488565a1b00f638bda8dc9f6073fbd093a. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/USCGH2083706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03324abded8befe76a866ba024848aa219688b9c1380f70d34dad50bda90f235. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/USCGH2083743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a47f8cd73dfa424181f25ddde00362612dfbca204b65372b96b289246f40acc. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/USCGH2083707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9c51fe8f1c519c16d18a9a52f795318478cfc5edcc1ad73b5a9b10fa110a0af. Chain 2 (Bitcoin): anchored in block 959011 (2026-07-21T13:26:15Z), 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/USCGH2083719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda681f331b58048e0bd5ec359de6b4b5695c72cf54a6067c67a6c63a24d01127. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USCGH2083744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf68a3c0a37bf29f70e040903551068cee1b5324f2d7d11936aca03bcc522a6d7. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/USCGH2083709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04e2f119fc8bdcffaadfbc1ba4cf1ed3bf5d0df268bef4f849d07bba54485df5. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/USCGH2083721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e3e9a92f514cb971f45e1798a790657fba93bc9199c21ad2c124b71846be8df. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USCGH2083734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x063c9842ea20ab7418d082a04de5f3d21a1955f3b7d4dfe25e1ba953bbf3a750. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USCGH2083746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ef22128e9999ae52cf5e6d08a0fb34a06925945be73521a97b99a903bf70011. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USCGH2083710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56bfdfbb9a68a8900bd3e866803a1c1035f1c1a1aeae212dd2a3be6c3c9fd359. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USCGH2083724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab9d94b518e72314ee6208518aa7757e445abeb2d4c585a53dfaba67587d39b4. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/USCGH2083737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68bbbe5ec2fc83cd461377c4e608235265828f22ea4000065ebb259d1c9c218d. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/USCGH2083738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb248690539ec2ad71a970164a7fe4c90e5ee0ca04512173b8e9e2458dc043c73. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/USCGH2083727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa21fe49255e7ab04786c284dfd8d42264d7e749d27bd89a1e0fc7597e240c56b. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/USCGH2083715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4369bf9c6b4082288ee860be82fc46f709ea96774ab16facb54e3ff7774f483b. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/USCGH2083740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcb9fa9a156f3c07f5828a96bb9e6b9d5f55f9f862fe1b440f1efb1c367a5a46. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/USCGH2083716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2903bdab096f6951b5bef79ef3bac743297514331c3223fbe7ee7efda26924bf. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/USCGH2083741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x708b8c431f142343e91feab17ca012d57a633208b09bb4366766acba7cb5569c. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/USCGH2083729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c23599f1f7e28324476ddecde55777b68fbcd0ef881cb7cb3919a724c2e5a49. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USHM22070924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbf95e133f84c1b840387811083aae43f1963e668083cd2c2fe4463a62241b00. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/USHM22070940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53e1beac5230e92880d650136e205e35d139542953f780cca04e66f8fbedf596. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/USHM22070929.