Christian Yu (born 6 September 1990), known professionally as DPR Ian, is an Australian singer, songwriter, dancer, producer and director based in Los Angeles. He is a former member of Yedang Entertai
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 0x1cfc4b1a0fb36c7960efd0466d6242daa233fac10559bb76717b560a96976a4e. 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/9937dfec-086b-4b62-9fe9-46b65206d697.json and https://artists.proofprofile.net/proofs/artist/9937dfec-086b-4b62-9fe9-46b65206d697.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 0x1c6361f7beaa227f9fc5f63760ad89257c8d4b2ffc44c9bdd295d6fea0d44f71. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMBZ92331724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0a18696d18fc3c2b04cd85be6c401a97706f717db1ceb004b73794ae2afaccb. 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/QMBZ92331722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3391d04551f787e79e6152c29c22259a6df85b4fe0622e126ee7fad851884385. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMBZ92331723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc965471a5e31986dd2ee1970ae6f02f16e5176921568f6f0cd47d1055be022d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMBZ92331725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3195cda43dffb4d2fbae757f53e87cc1d32ed1be1929b932adb2c756eddbe76. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMBZ92331726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5e176909d0c0796b903ff187776f4d78b0c86af1014492eb5dd74244cea40cb. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMBZ92309795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x072de112a0ffc8014f238c7d9634536eb2b4649ca3d1adcd2f8b18bed665ffc4. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMBZ92331728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeae583317fb5452f3fdaea20d255f2a3df420bf16c22d4dfba7136dbe4efdae7. 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/QM6N22250312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3242743e6a61c8fa2e55ac501045499c78898e71642084801e6261fd0039ecb. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM6N22250318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa218e39679518fa425c299253602f1055d7a167f18218199eb320fa77c7838a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM6N22250408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8502bf661109a02c3cabbd2e3af873c3e21bb0fccdec5bd42aef94c31ec396f2. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM6N22250346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea9b85006cdd6687eb39da8764742d86adeb4139aa41afe70bb26a5a04de0ce5. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM6N22250349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdd6c5ec0ea501b2cf812491bbd79841b508459f5603ed373e98ae67f2fcb84c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM6N22250350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f05714cf49b5a671f8f901b1627e691f98250c816908b4f82a47e5e683ee34a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM6N22250351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a7776a1a68f2ccca0da954098b264d146150a05a92178ffd98926efb846baf9. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM6N22250352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x009bec58ea707c262aeedb99a8f4e198d0a6ceeaa17c816667c8f1ea9200de17. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM6N22250356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14c2771eb9e767772272d2df43123643593c534dbf8bd24aadb283a9f37bea0c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM6N22250373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a43a5b72491902fb3727fd0d2cc57b36e4eecc07406dcd4e1301fb5dcd39d17. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM6N22250376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b533dc4dd257877fe8f77e367ca36f414f6b40b84d8ff916e62e252ec823467. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM6N22250377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x355e1683b95f1147b9c687d75e3bc9c361be08769c19554994fc56ad4159879f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM4TW2168121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bb2e2c11d354e2a682538e78f0eaf49ba678b137b51b32fdbd897cbb21db1c9. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMBZ92080093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x592533b987f20b362fba61e449abbd4d11ae9e43e8213ebcb6f0601759923da9. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM4TW2168135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5513ff1951a9272676129acb0baa4188ac8d2811584a0d576a5fe48ffe4d9700. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMFMF2000505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4e2770e14201f3cc13da28f0472f07d7e4b5c37b91f5eb12802beee7763dccb. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM4TW2168146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x992198d10c2f693df34d5b7cbdc2cf497cd15f98a85a15ad615c0f6880b7587f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM4TW2168148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1111845a47baf7b989e45eb454c7c61728b311a68fc9d13c222be6b69b4c149e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM4TW2168151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe27284471a6e4c4651a32919dacd7b4ab25fe98f666081e8b59ad35cbe545f9f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM4TW2168161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x334730ce58bab6d4664034eec01ab6236e6ed1a66769a5d12d136975e685270a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM6P42007487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa06d81ae5024ff55770d5d92d55cce1f7ea60c48aa38c405911cc1aa1e0937de. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM6P42009752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dc8af2a2b77db2765a8fa176f4fdf7ccc201b972926ad05ca3b77f68f0f579f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM6P42009754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x883f1e0140cff99514ba10343ebb9ab42494e575e6dc47af3c4f530bddf07a21. 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/QM6P42009788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc185ef6058c5a260194c63fee94224209acd6c6adf158989bd7c1c1dc121e851. 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/QM6P42009785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33fb8e2bee1991fdc0d1007f3c3c2b719e3085a45ad80a26bd1d243cab76e038. 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/QM6P42009789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28452b0d038bb44e6e06e1679b9f8ec04ed382459a830162a00d49a3121c7dc1. 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/QM6P42009790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00ef7750415daa9283671708093790c90c239057348462e8037d69eca89a0e39. 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/QM6P42009791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x596fde5fffd9a543727ef09466f067fcde64df0f111bc1a6c8d5f3ae1bcfbf56. 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/QM6P42009801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedb649e76bd014fa38f0283d9ec8f1958fc3c8dd7d30bb7033f157f69a44a32e. 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/QM6P42009802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93dfe805f0e894db468ef357e793dfe1aac899560f34f64ffe16d71ecd41c9c7. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM6P42009809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fe19fa3ac66026056993e1c9ab2815483a3379b86b6de5a9a147be6a75b67d5. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM6N22295910.