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 0x3bb00365cc408426b95dddbb37bc2158f9dec204e821e0ca80d7c9b5aaf6eebc. Chain 2 (Bitcoin): anchored in block 953636 (2026-06-14T13:03:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/38175007-e657-41d5-9e68-f507c43ba166.json and https://artists.proofprofile.net/proofs/artist/38175007-e657-41d5-9e68-f507c43ba166.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Lovers, Lead the Way! / The Heat Can Melt Your Brain
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 0x193d9fd878cc591922c5a825f802f571e9fc701c77f393395d3cb4218b3d3795. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USBS50610567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x193d9fd878cc591922c5a825f802f571e9fc701c77f393395d3cb4218b3d3795. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T14:57:42Z), 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/USBS50610567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x193d9fd878cc591922c5a825f802f571e9fc701c77f393395d3cb4218b3d3795. Chain 2 (Bitcoin): anchored in block 958625 (2026-07-18T23:11:57Z), 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/USBS50610567.
Noises, Sounds and Sweet Airs: Choral Music of David Hamilton
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfd8db98c7bbc4ed60adae720ee98b7376309167e09b22cf0ede0a1d24b884f8. 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/USVG21102789.