Sidney Lipton and The Grosvenor House Dance Orchestra
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 0x87c088c3dc67cf09d82f82b9306a1b3e6944009b2a6415e437726096a5e68a13. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/690bce4e-5007-45b8-a875-6288e9e44a9d.json and https://artists.proofprofile.net/proofs/artist/690bce4e-5007-45b8-a875-6288e9e44a9d.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 0x59c0fe203724c5612728af014f01b559b642558f23a3b4bbd7e7b35bca342d8e. 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/UK7771415066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d467dc5e4dcd0b0cc6e99cc97249808f6be0fea5c844d6eae40a72495f5cad6. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/UK7771415067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x070179f91efb62e0d39f6297e542d126008cd15c073a5de021c3f94ba5c1020a. 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/UK7771415068.
We're Gonna Hang Out (The Washing on the Siegfried Line)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9effae10ec33d1f7a49da10e7d9558a15e00283d69d46aff4bfc80bd0576d7eb. 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/UK7771415069.
Ken Johnson and His West Indian Orchestra
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f35c515b5d68a6d7d6794864d648b2c09afb36e9e22824bf9e3683659010357. 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/UK7771415070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca192d38314a1277a70be7d0855dd52715c01ed889e4beb0bf39c35294324734. 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/UK7771415072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c7d40fb6b4e1cd2049388ed75bb53c42d4632ed94448b20d1cdcfc6ad6454a8. 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/UK7771415074.
George Scott-Wood and The London Piano Accordeon Band
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x669d4d914e08d38b9ba7654590f1e704703231f95f8e98981528e386d6c9a934. 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/UK7771415079.
Songs That Leslie Sarony Taught Us, Vol. 4