Matt Uelmen (; born July 31, 1972) is an American video game music composer and sound designer. He is best known for his work in Blizzard Entertainment's Diablo series, which was recognized with the i
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 0x415aeddf5ec0c50b3c0270a58949ee0633dd6bbd43a25793a00e4c6e13a6b292. 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/11f1047e-0afb-4b53-b8ff-2c03005d88c4.json and https://artists.proofprofile.net/proofs/artist/11f1047e-0afb-4b53-b8ff-2c03005d88c4.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 0xa21ebfb80886fb9e1cdcbf4119e74fb25cd9c387d0212309f87ed3b1f968e780. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/ESA012228313.
Tristram (From Diablo) Epic Orchestra - Village of Bone
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bd0b4989340b0dbf2341522b94e19b11654c9fc4ffff9b054f7762fa2260326. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZZ972340193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d10b5b788b849b7945d3faa77f4eea99ad80c90633ae69ec51265080630d639. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZZ972340194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d93b5812a26aeb0810c60217736b8be65aaff6353ba3bf9c65293e089b59c8a. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/QZZ972340195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05fe51267e8d7dba321b397f2bb638c06cdd09bb9fb5f477d8d4a5dffb65d0fa. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZZ972340196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42eaa0e9eeff15f2bb95fb18485173ddf58a89c5a57f242062875bd90dda0f59. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/QZZ972340197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15112fc2b8adeeed8d2e40eb8ae85f372b96aa35a3dc39ecc24b6519d08909fe. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/QZZ972340198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd15df5834f50ed6e4d7946748adad2d28cea86e63a5c4c5c53b725e86257811. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/QZZ972340199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32235c3ad6cd1d44516e31d7243777979cd622a71a2252457d108ee04d600ffd. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZZ972340200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb72f334cc3efc4b7bee4c35cb7d59e331cfdbe4ded7b7d0b0bb81699d3ddde1. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/QZZ972340201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b1ac0d46329c7ee58d75ecd942f7f061f0e438fb82f6b4cb7458239c7176121. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZZ972340203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34dfe6bc150c6bc070f27fbcea9246d489c6100c6fac013074991a33165d14f0. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZZ972340205.