Kercha is one of the Aanaas in the Oromia of Ethiopia. It was part of former Bule Hora district. It is part of the Guji Zone. Demographics The 2007 national census reported a total population for t
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 0x7ec0a0295fe5f1fadecc417eaf1190cd0459c81f6384edd482a4a28ec7b7ebd3. 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/e65faa51-6be0-407f-a881-19ceb5828c10.json and https://artists.proofprofile.net/proofs/artist/e65faa51-6be0-407f-a881-19ceb5828c10.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 0xc7b20053394091846b5317d90c21000db89c64e8efa2aafb29099e127dd6bf57. 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/UKW8R2000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c8ee31110f09cd83aa51198af0810e9655bac3d631805cb75298894c757c0cf. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/UKW8R2000011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf34bea5ec38724e473d111910c22e7b4a40a60831d4cbde72a102129c045b673. 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/UKW8R2000027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2798eaafb44ba9d24c2d7884537b4732f804c2d03ff1d6a055337afed091351. 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/UKW8R2000028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5072e74c189367441591f7e6765c4eae9cbc9d3ba586c6b10b9f81b317d8bb6b. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/UKW8R2000029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x846e979be547f8f51364ad9def58e2edcfa6c1749b64edbee160306c51b8a3a5. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/UKW8R2000030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb14da0811f0af44e81263d45b487df3c5a9be2d1623fc810eedec0a8583277ed. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/AEA2M2219670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93638aa7490fbd953eb84244ff65bc6fbf5fca94bd8dd593068f9ea2357012f0. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T23:45:38Z), 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/UKW8R2000044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a2d38ac49e6242faada056bcc6bd7587a7deda50e80c94f70852bc7994275f8. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/GX8LD2399588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95f8249b538dfb094fc5399bfaa77fc7a77e859cc0047f3ce27f46297d2e04ad. 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/UKW8R2000074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccc2a3d1a7970b13065deb44fe4dc8781922e5d13d8f10d494e12d92eaa05d91. 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/UKW8R2000076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02bdd58b267668fdb2b1f01fb895bc5fc896dc65c1b19e22010a70f200e10519. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBWUL1824415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7f58ef42b13f21d55caad3bd9f2b2abcfb27842af2e384208bdb8fd4e64c6d8. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GB8KE1659988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0204752e088060c67010f04d5a8f8ad4f62bdccd27f38834df611c92359b084e. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBSMU4211624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x588c0d76f19fad5419b29eb48df37831c894134dd45d42c1e3470ef9b3741076. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZWDD2374800.