Matthew Bair (born June 2, 1987), known professionally as Matthew Koma, is an American singer, songwriter, DJ, and record producer. Songs written or co-written by Koma include "Spectrum", "Find You",
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 0xc665ff60d58099dbfe5b655c3cdb71543ba470164e3fc7d84f5c3425135d7c9e. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c5543680-ae79-417f-883a-a99f765d883d.json and https://artists.proofprofile.net/proofs/artist/c5543680-ae79-417f-883a-a99f765d883d.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 0x0125074ffe4b20ecf30f3995759de0f823befcd328d52a20b5f51de4ab1c17e6. 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/GBCFB2000046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd62787761748ac21f82056b087a143fd7eea13c4af8fce54ea1d659b4d206c40. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USUM71400263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x357dd4984d83de4d92cb29f2bd8e9dc7791eb0a27bb07024ede57414506899f8. 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/USA2P1831769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ae628cfbe82649eab24dd09bbd60ddb12927b9ea133ad25724134b0d49a492b. 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/GBJ4B1200099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29f3b4c3d44ae7c0467d390e07d1ffb88b626919ae2c681c312ada872439f432. 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/CYA221400026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18929ed8e42c9639ff2240e138f676bdf3e8326b0a2ce251db91f3b0d6bc9e25. 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/CYA221400017.
Dare You (feat. Matthew Koma) - Radio Edit
Dare You (Radio Edit) (feat. Matthew Koma)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09435fead9f7cb6776348320b37a00a34aec5e171039a4046a918fa1b5c40bfc. 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/NLS241204135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x741d7a6dc113018ccd822aecf4c719a511fdb711b112748d0f76173c4e6b2e20. 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/USUM71205604.
Lounge Top 50 (The Ultimate Lounge Experience)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef548d9b7a7ccc25a642382c41aa5ffcb3789e270facfd2391c1352fa62cf022. 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/NLS241402213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48ac03eda6475cfc1c3e9b563b102e871ccc9d76602b2dae2a07067e15148e28. 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/USUS11203335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02f3139bb1fd84da6d96fe74883308803c3deb746120b278a818dec33a7f2298. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/CYA111400022.
Cut You Loose (feat. Matthew Koma) - Tisoki Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92ba061df1ccba262a63f50ad79cc441b13cf6db6b299689d3ce706069a57e05. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/USUS12000292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48ac03eda6475cfc1c3e9b563b102e871ccc9d76602b2dae2a07067e15148e28. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USUS11203335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22501366e46b021609b87b2b5ccc9ac1cd1b5ce5ff7ca822df417c6e5ebcbc15. 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/CYA111400037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02f3139bb1fd84da6d96fe74883308803c3deb746120b278a818dec33a7f2298. 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/CYA111400022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09435fead9f7cb6776348320b37a00a34aec5e171039a4046a918fa1b5c40bfc. 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/NLS241204135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x741d7a6dc113018ccd822aecf4c719a511fdb711b112748d0f76173c4e6b2e20. 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/USUM71205604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb01739ff88946a6d6f23a5426f54f9631fb1adcbe360d30dd6b44be0955c383d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBUM91500036.
Cut You Loose (feat. Matthew Koma) - The Scrubby Dubby Wub Steve Aoki Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3431a4f6a19f0bfd46b151fd30a54f122b5617d3f7a7e99ff64fb881ce718eb0. 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/USUS12000287.
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