thumb|alt=Photograph of the siblings in woodland.|Laser Webber (left) and Aubrey Turner (right) The Doubleclicks are a nerd-folk musical duo based in Portland, Oregon and Los Angeles, California, con
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 0xb48187b960685b66f477d376752f8981b6dadbe34f5acafc101ca2314ae434a8. Chain 2 (Bitcoin): anchored in block 953819 (2026-06-15T18:31:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f93e88de-8973-4191-84a7-b3a7991f2a52.json and https://artists.proofprofile.net/proofs/artist/f93e88de-8973-4191-84a7-b3a7991f2a52.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 0xb1ef4f4a8643111a68a71859a7de8dc365a54a4abe91bd88880d354bae07bac4. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USCGJ1234200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf01d950a76ef4168de02cb16c9e14597559e77d9fede744de659466c64e2be1c. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USCGJ1234205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5811a9a83b7f31c11548762f25034b702a6433b02f0575bb97d0c138418e6c52. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USHM21355265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccbbdaf5c045c10364be3c9577cec83e245e9a73ade0e5a8ba8724acd73bcb4f. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/USHM21355266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aad94b18cf65aaad9d9bb2370bdb86212edafc5fc5db513199c4468a4cffc41. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/USCGJ1479481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6370d19f97a17a5524828024d149d53b55fc77fdb305eb1e112c24a9aef7ae97. Chain 2 (Bitcoin): anchored in block 958882 (2026-07-20T15:33:11Z), 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/USCGJ1479483.
Dinosaurs and Feelings: Live and Great Hits
Our Solar System - The Doubleclicks Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8fa9a58b688aa646bd36f084f2060cf9e5302ab29d60293d49d9224477d19ef. 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/QZNWZ2422205.