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 0xba77002d49ea30d0e8effcf05d7e87c3715ba6a2e38f9d27fb8b14f0ccff86e9. 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/dcb97b1d-3193-4457-bf2c-68e1565f1a02.json and https://artists.proofprofile.net/proofs/artist/dcb97b1d-3193-4457-bf2c-68e1565f1a02.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Kirby's Dreamland - Sand Canyon 2, Green Greens
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 0x8c8da6dbe20f1c1bcf5c9bb2ae79ae2ea492f72fb7baaec96dad1f5d083d83ee. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USX9P0955916.
Street Fighter 2 - Intro, Ken's Theme, Ryu's Theme
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f8ccfa0404a8f61cc625733ef52c551e7a804c761e0ab24d22cb267020aace8. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T03:52:31Z), 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/USX9P0955917.
The Legend of Zelda : A Link to the Past - Dark World
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97e02089f043d207b6ac5c045982e6e5283ebf5b05e8d4a6ebb01a689ae0fe74. Chain 2 (Bitcoin): anchored in block 958572 (2026-07-18T15:47:37Z), 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/USX9P0955921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ec966e8d222fedf9e51c95dae7a93113d70631c0d9a2dadac007b3df64031e2. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/TCACH1505090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x186e88ac51d157c6b13c28bae0aef5f77d967094e178e0e38ec1a09ebec95dca. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/TCACH1505096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b887d0a041c16379a31c917fe07b10090c183e68342c4a2654df0234ca1bc3e. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/TCADE1705253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0235a48582c0da518f1e4092c796cb6cceef8323286c9210086c8389caca44e. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/TCADE1705256.