Joseph Kiambukuta Londa (14 February 1949 – 7 March 2021), known professionally as Josky Kiambukuta, was a Congolese singer-songwriter and composer. He is regarded as one of the most influential figur
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 0xc42aa7d2e8a232767c3b90f05e0fd2614a13b880b18b0216dff4a43008939ec0. 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/96f8baee-0c2a-4c9b-82f1-1e2d8e0b57d7.json and https://artists.proofprofile.net/proofs/artist/96f8baee-0c2a-4c9b-82f1-1e2d8e0b57d7.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 0x2ce88dc9c94fd96007b9d87ce4f9e0635a6fcf921e9090ec2ab794c1c3d450cc. 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/GBNRN1921001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ce13932745f7cb7af66b897a4a329d00cd12dd0d85c13b792d1e1eff957a213. 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/GBNRN1921002.
Chandra, vol. 1 (Le commandant de bord Djo Sex)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ca03330325fbf1f226baaa89225ca1fe08b47b44021eecce96b8a396cc5eab4. 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/FR6V81752735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x898694d6414212048501777e7fd75d652cbc6b9cbca9565c37103c376e20b768. 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/FR6V81752738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa56c0dbc0589fe23e9b1b2ad87e365bdb14789451dabd5fe73b743b7f6675326. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/FR2X41586271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a4353dd41f3e2c037d778acfb67ec2099810654f58cd2fbc683cf61c11c9e03. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/FR2X41586274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b452400d5059834f7112f55f996c8918b84bee81f3e3f9055a46121059e648d. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GBNRN1164103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a827f0c42b6353191f20ed017c045eb9ccb132ab0d9da48abf82d617c1516bb. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/GBNRN1164104.