Coma Cinema is an American indie pop band formed by Mat Cothran in 2005. Cothran began writing songs for the band during his high school days in Spartanburg, but the band was later based in Asheville,
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 0xda61dd15e2250ad2e65b7b6ca4148e41d13c3ed5ffa9b2f15c85f97e2f18f364. 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/74a5eb80-7297-4f7c-9aad-2c473440ba00.json and https://artists.proofprofile.net/proofs/artist/74a5eb80-7297-4f7c-9aad-2c473440ba00.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 0x1072945b4f0963e8ff258c254b7f2d3e490a33db273c17ff6858980e616ca828. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/TCAGG2292614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1416bd53003eb248813dffef19f8fcf7cca30ebdf481e59fa244267f54f362d. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/TCAGG2292637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb830b0ba337d0973c52ebbc00e3acb2ad2dde054befe105edcf70be23b7536a. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/TCAGG2292645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9239d86af284f5d8e8c5ef094a5a5c7d3308996e94366da60cccf11cb51d37b6. 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/TCAGG2292663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7286b79be922031a924f443b04bbce2b7c1cb96a7e8bcc0f7e8ab9bf77f3e8d. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/TCAGG2292667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3eb66bdb59d28e522af38e780f5a29953cf13ac09dc0d634404203aaff45754. 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/TCAGG2292694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd14414807a769d919edf681244f2d76fee78f552f59e7251f98c4289b496578. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TCAGG2292703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f5464c6f3370446262ffb37eb22c8fc9f20217aa520a3eec8030d4f49aac6e2. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/TCAGG2292788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10bea67e126f0a507f9068ded75e3e68c24dea7eebf7b2e41fa5170d84f1838a. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/TCAGG2292817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc07a30364a1a8415f657904b8afcf997cdd1d74e8eaee712bd1941354e6bfb7b. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/TCADH1759520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6545a201ef9ba6bc57a60076b60fea265378ee97bfda133403985d92104f92b. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCADH1759527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb963ee758395908739b8fd057995140c9112cc3d6c85e60f8d84fc057eb8c485. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/TCADH1759530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25c852d925b1e528feaea8c270824ebafa1787cf75cf2a5b7577a802c4892825. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/TCADH1759533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45d592d5dc125ff70f966342f7b6fce23433aeb789404160bfc900ca85e919ee. 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/TCADH1759534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef742da2575195bffc422bc024a8ffc3fa3c5c7808d2e5fc9896664beb38706b. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/TCADH1759536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c49138d7f9d875fc2c3db3d8615e471d7795ae90d5c75d5df9a5b90bedc7922. 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/TCADH1759539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04cd975658967035b19ddc60703c0dde1255d20c9bbf7c1f2d3eb37e23c7f8e3. 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/TCADH1759540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd92d9cc1c5f9a709aa9b8e86fafda6a41d04d5078076c09c95a2a7de1c20f1c5. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/TCADH1759542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacc4da1cb47dbe5a4704d62683ac36ebef617aa76d7607ab79cf68be7f5054eb. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/TCADE1773238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3d1dc810e3a3bbc6823df5b553482c6d063dda58dadd51561ce23dd5f74bd4c. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/TCADE1773248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07db28b39a2bded1ff8d4ce4b51c70eb5a7fb473a3ae56212561bc16d1071d3f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TCADJ1750560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cda1a8f81f247473b57c9af411292b5157f0b057f1f6283668c52e55036d004. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/TCADJ1750569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52af2ada6c303c578170c98127edf62bc0b25251695bae02690ac42102c98b73. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/TCADJ1750575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e05a999a34603c94fcf3c838fb7c748a5c530de90e643972eecb17392a38db7. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/TCADJ1750576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c50c5512d5b1fa5a190a3cb835b4e1d1ee23446e84a490ef1852f8ae8e364d4. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/TCADJ1750578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34d75f49662c6ef51d7ce672871184d0a7cdb45f37494054ceea877b788946da. Chain 2 (Bitcoin): anchored in block 957965 (2026-07-14T07:07:52Z), 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/TCADJ1750585.