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 0xe9760f0cc1820d599d5ec84d6e88aa7a2fb384a231deb27f776a6e73c32cd94b. Chain 2 (Bitcoin): anchored in block 954569 (2026-06-20T14:36:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b1200154-7718-48ea-97cf-0fb19ca6f72e.json and https://artists.proofprofile.net/proofs/artist/b1200154-7718-48ea-97cf-0fb19ca6f72e.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 0x5006d22bbcda0f4b343aa922a5cb42757c7d2f9ea1a8b851a233650230237285. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T10:46:21Z), 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/CACYS2411001.
Underwater Theme (from Super Mario Bros.) [For Orchestra]
Underwater Theme (from Super Mario Bros.) - For Orchestra
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28382ff7bc0d4d0700911b1c0a36fd139993568e27bd2b9232cc820978b8db27. 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/CACYS2411002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd8985e031d6f8694cb248d2c882f44be55f8e7b9cb4ee29c3cd3b5533d1ca58. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:24:51Z), 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/CACYS2511001.