The Brodsky Quartet is a British string quartet, formed in Middlesbrough, North Yorkshire, in 1972 as the "Cleveland Quartet", and subsequently named for Russian violinist Adolph Brodsky. Ian Belton a
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 0x24548842c98bdc1b338c5ba5167e34a91d51cfeb1c1fc80f1d5ed1e60eb5e06c. 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/12b06ee6-9178-482c-a488-6fb4c70d1a7d.json and https://artists.proofprofile.net/proofs/artist/12b06ee6-9178-482c-a488-6fb4c70d1a7d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Brahms: String Quartet in A Minor & Clarinet Quintet
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 0x41c32cb01ea20e58e8dc072ddfca2f87c1038748204f68bb6ebcb46b0fa4411f. 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/GBBTF0200346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32574a3f9c059bb0d0847ace803c62cdbff09bfbad5bb478a61ccc619f5fbb9f. 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/GBBTF0200347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd081d35951e05597cf91e4146d8edeaaaccca75d06ec3329a64e17339b6c82b3. 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/GBBTF0200348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3bc54376c79b8d2e090ca46227c054455cd23959201a0a1105820f62c3b606c. 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/GBBTF0200349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdda20a1407e330ba80e7f11c0d7c2e020c5721927b451aabc00e388266a71bae. 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/GBBTF0200350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x178deeff8a60ddb547044f72a1d1b6bf2186fc64f3ddd89ab46486c6be6a8fe0. 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/GBBTF0200351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90cb4aaec7654cf56a9bdf640e36dc573ec1d15a4797e0a31c04a1e6f2467766. 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/GBBTF0200352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd83a45d27981d6f24f68c798ee743ef98ded9bb11890efa0fac3c02fcc4620e8. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBBTF0200353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cb611867291cb3ae92270378b30b85019a9bb0a0c1e3301c910217004a575f3. 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/GBBTF0200354.