Third Coast Percussion is an American percussion ensemble based in Chicago, Illinois, United States. Specializing in contemporary classical music, the group is composed of Sean Connors, Robert Dillon
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 0x92945e83f4556b7d90d20b9be3b7f09dcb7e6d1d130893624073cbd1061bb78d. 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/378d56f7-f73c-45bf-8ec4-b123c0497ba2.json and https://artists.proofprofile.net/proofs/artist/378d56f7-f73c-45bf-8ec4-b123c0497ba2.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 0x78ab6cad65b0430ad6c4eefafb96c492ae37b482f5afc416578ad37523d12193. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QMFEL1300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8611c6eb0fefa6179feaeecddf0651b7274078cc4f64d4d6e0d06f71c30d93de. 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/USB801067279.
Millennium Canticles: Pt. 3, Bloodied Bells
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cb29b03ce905355dc5c9195037e6b96c2eeebd6b993bac5f7b3901ed6439db1. 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/QZUD82300080.
Millennium Canticles: Pt. 4, Choir of the Holy Locusts
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x842d3532d300d81a7f367dc697f10bfff7e196d57eede361e76056939b03f2a3. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZUD82300081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0056ba65c013ac22afa249e6b6b47697d6acbc42d9b61837e3f9837c0f3c80d7. 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/QZUD82300084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dcc0cabe3b85edadba68b3005bc8195126e2f1979682b34fee2d69662174564. 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/QZUD82300085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea139383db27114f29cf527b044463e10fee6883c0043476ee05a8cf285463ba. 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/QZUD82300086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2b42bfa47296ddea006ac8f676edbc29d75929c860dd779f99008f6c6a55e1e. 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/QZUD82300087.
Millennium Canticles: Pt. 1, Famous Disaster Psalm
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ed2b19c3fcae8049da81e5ee27e41658f877773a0db1b056dddc8f71c3ad180. Chain 2 (Bitcoin): anchored in block 960429 (2026-07-31T16:07:24Z), 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/QZUD82300078.
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
Millennium Canticles: Pt. 2, The Doubter’s Litany
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a8a13c4c5436306aa62b15584fad934059c3f5f9d7a03a54727325f127f5d6b. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/QZUD82300079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dbec9ba4a53367d0e71c2e5be643b03c4c8e63c85491bd25c2f6ee428e97676. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/QZNWR2436877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x244de4dec2f0e4cc06dc87b5a84c7f0646dad9da1b129813855cc67a7b2d28d0. 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/QZWFS2462412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf762fc8255b3e720e3f234345d602f937d0f9e0f3bb83e7a43e8744497e1835f. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/QZWFS2462415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd62f6169fde000dd047049760007388e5356be3723199e213d0c68870d71761. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/QZWFS2462416.
Sonata for Percussion: I. Memories from Childhood
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dba26f5a63bfd86215e86d260d1137a876f341385a4ab9b9881078ddc182928. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:12:35Z), 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/USB8U2500139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f228dcac8d45748bd61c5e5c4bb6f278c797e5df9daa8bdfb228d175cf1b226. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/USB8U2500142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7953ce51e63e5cf3ebc114e7536b6fb47cf9db73a6eca12b2b65f1c757c162ad. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:58:39Z), 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/USB8U2500148.