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 0x1ef9222791d56078f1d289422b79c5aba64b4be0a2d70dd96daf568d3b7b12ed. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a6487751-44cb-4fe2-8882-0fc0da455b84.json and https://artists.proofprofile.net/proofs/artist/a6487751-44cb-4fe2-8882-0fc0da455b84.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
I Want to Break Free - Live Rytmehans 2012
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 0xb4daabebaad19770f73487da75780111600ab789a9d7dc47edbf6665c5f85b9c. Chain 2 (Bitcoin): anchored in block 958495 (2026-07-18T04:39:02Z), 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/DKSN71106011.
A Show in the Woods: Live in Skanderborg ’23
Don't Stop Me Now - Live in Skanderborg ’23
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0ab93a8599dd2feb39dc04c5c8c5303dec81cdfcd9202428f6bcab0d0b955a8. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T08:22:28Z), 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/GBLPF6778993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1516b9c5c6b581fa4324d7ff510e4f80a4eda05463bd3e15e13bc502ed4848c2. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/GBLPF6778995.
Smukfest Killers: Live in Skanderborg ’24