Trinity Baroque is an English group of musicians who focus on the Renaissance and Baroque periods. Founded at Trinity College, Cambridge, they are formed of a pool of 6-8 singers, sometimes expanding
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 0x5f104fcdafb8a09294a3063ca041ef52fb6f4e27a3c926314d3a1182493d00c1. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b845a779-1713-49e1-81e6-5bc3d0a564b1.json and https://artists.proofprofile.net/proofs/artist/b845a779-1713-49e1-81e6-5bc3d0a564b1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
J. S. Bach - Motetten (Meines Herzens Weide)
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 0x9e345fb4a644cc2e1325104d52f2044c14627818df84383312e5d06daba0baa2. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBC7N1040201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d51ec43ef3b1d6019e5ae2112478d824e55d1af5f38865fcc8cd37fea789eab. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBC7N1040202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81d4598eb7d7cf448e4cc82059378b01c16fd69dd85c811624e9334ae3a24da2. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/GBC7N1040203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb667a4d9f6d11d0dcd394689fe82c92f8ed0ff14caf1f619f3927fd41cbf0bf3. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/GBC7N1040204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc28075090bdaa2d2ebf1afb288787c5912b0be37b1c5f45d2633f748f89a6a6. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-21T20:25:40Z), 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/GBC7N1040205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2202554950357da4a721c35f8dc01d50abd897dd5b532b02ccb2b525e956f18. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/GBC7N1040206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cf0cabccc47f67a87216222fca97870495b7420eacfe3f1897b3f2e66a07158. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/GBC7N1040207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x780d5618cd361b17b2d8b360c48e4dd985157e7ad84cdb76b47ec9655a268b9b. 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/GBC7N1040208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c4f9a8f52cfbd5c952ff096c7b82c2d0700b7d58a95836f733e3d927d18e2c5. 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/GBC7N1040211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc026ae58c3c3fa4e6b40924aa44a0347ecda45aab52c3a853858506675d6eca. 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/GBC7N1040215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa799cbc88b87c960b3f4d1a703e76afe79c6ae99500dde001608bc396ceabc9d. 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/GBC7N1040219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6383f2fb11483a9b58201a663c5f7fba98995b6f4f2b882fbbe0b8493dae0895. 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/GBC7N1040220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5edf41f233623ee7a836ccf344c2d506ffc324b00cd1d4da9a404ccf1b89c5dc. 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/GBC7N1040221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee20cff8f090833c3d2fad00cfc561a820edebd6d54237a4c0d42226d369d91b. 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/GBC7N1040224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79d1aad349d5b65682f032f6b5e2e90ecb0ca67b00b28b504c209b55211dbff8. 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/GBC7N1040226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6794f401afd7089f08a7f2ba5f44a1708dd9a2efbabe3ae34e2bdb9dea82b885. 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/GBC7N1040227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeea47fc93f23cb8443f445942413f0a039c14dcab55b998d77e58d99595be2ad. 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/GBC7N1040109.