Jordan Haj Hossein (born 1 October 1988 in Prague) is a Czech musician and actor. Biography Haj was born on 1 October 1988 in Prague, Czechoslovakia. He was born to a Czech mother and a Palestinian f
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 0x108ad6af037505f691717ea6451da8dfad1e3eb3dba30390c6aa3290faef83a9. 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/125d81a0-4aa5-406b-80a0-aa36cf0bed1a.json and https://artists.proofprofile.net/proofs/artist/125d81a0-4aa5-406b-80a0-aa36cf0bed1a.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 0x46639d1d19c7cb0baf9fe2afeaacfa28337bca0b46d70eb97b838368dfc11825. 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/CZM902000017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbebdc003589969eed04b0e44c0def7027131ff28cdaaec5a90fe46592014456. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T09:14:08Z), 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/GBKPL2030639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2dc6e3799635bee2b9375ec531f02f08da6f1e54bfb00d780694517556a0722. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T16:17:58Z), 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/CZDG82300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44a3d066b5841cd173e2b8ef7b1ca8b5cb33526fe64ecbe169b9d139bb4e7ec0. 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/CZEA72400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7082e045cd4a9c0355e33cb49fc4eba262adba75d53856f7edd8d72679441d7b. 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/CZDG82300004.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbebdc003589969eed04b0e44c0def7027131ff28cdaaec5a90fe46592014456. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/GBKPL2030639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab9977865051d8f598bce1c6ef83a6eafa1640129a1d1078ddbab145f8720740. 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/CZEA72400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2dc6e3799635bee2b9375ec531f02f08da6f1e54bfb00d780694517556a0722. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/CZDG82300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30cf89dd45524e9cf045e93f0fed4f15138854a9ba58e108c190c82f6ab49d58. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T05:43:55Z), 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/CZEA72400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18cd7eac9ce409a94d02b8f7d484bf2a61d95e202f15e8f412551433f3128bfb. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/CZA232300332.