Tyler Richard Yarema (born October 27, 1972) is a Canadian Toronto-based singer/songwriter. A self-taught pianist, Yarema’s early influences in music stem from the stride genre, and he takes his cues
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 0xfc3e03350af392ef0e5e1b55783b9357c859983ec1eca8fdd9a5d94f5dd1018e. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e816e4c1-9290-4d5c-8a5b-c441ec257a59.json and https://artists.proofprofile.net/proofs/artist/e816e4c1-9290-4d5c-8a5b-c441ec257a59.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 0x6d67f19857f0551b12d3e8dcd5851e8b0a7daa78863d84c4820fa799b191d954. 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/CACAK0710139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09254a919bcff5e3a9873470be7a1923643255b6451c64f314a154ef9d9f1403. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CASD10700386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b7c2f0924093cc37b58bd3e23167b451b46ad12e829aa3747a321fd6f8f874f. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/CASD10700376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb3b70eb3e5667269d80dd2ac28e7eed71616a2c1082cc3a164f5e00698da561. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/CASD10700554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa17615f1b09fe791cc09c1086724afcd8992745eb216cc74d88e62d12e98577f. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/CASD10700375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeca507d7654fbab65b6a177f153df1d58fd4e166f8757c28cd51e4e85c9741f5. 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/CASD10700555.
It's Beginning to Look a Lot Like Chrsitmas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c7802401619956c627b875936b84f7eb3bbf82d353b3e5efaee06147bc5bcbd. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/CASD10700374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc30b6816998d7a7ad32752d33781ad9b866af25547371bb9f6b5aafe6f45524d. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/CASD10700556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28ade67fe12175d362b50ea199723a88323934b14b83c710717768801b3444ff. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/CASD10700378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00eed70c6b37f461910b58dfbc5222b1a6b909d2aad8c894e775481aeb2ef46d. 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/CASD10700558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf67ebf7f298eb7a91c87c771485b5cc8cec548af5909e6c29f735759eb36f937. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/CASD10700379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8a7c73bffd74933b1a39b90b861d21dea6bef98fb7fed84ea695162bcbd70f6. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/CASD10700559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf48b78f7bbcd7d33bb833ec76737dd18006f156037e87c9a3656969102499c13. 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/CASD10700381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1f4253345aafed4d5a0a330bc2482aa8f697e37456295c9da08bccf0f62a483. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/CASD10700383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa236f9f674fa55ae62e455d1ceeb7bf91f9cc0610c47811e72fb33a6458a3de. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/CASD10700562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb40b9f5d0e4c58b3f0c67f906ff2399ec4dab9ac75ac215ae42396a8c7c377c3. 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/CASD10700563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd149d95bad7306c128a6cf807e01f86c1f0aed627e6ce96e02ae66eb841a32ba. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/CASD10700384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3bc52096f828154eb29f66eba591f982062724b8e8ea88e43c1df5e129d609e. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/CASD10700387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb41f0f886d1d5f5f4010e6bbb646c93ba240845700bc687913edba7036169bc0. 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/CASD10700382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccc4971996d584230df8b97c9810f5da220f0c558a76747ec1c26c36aa3d1c61. 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/CASD10700385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd568d24eef81796ba848012b37dfe8e5f91a1028aaade013921b380dd322e80. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/CASD10700567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09e47de8235f5a28ecd9a71ad5f3f637b6a1f1b8302ce935725dd86f84672fc0. 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/CASD10700388.