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 0xdb924b81c7449bf36ce7b660aedebad77a2f090c9fb36183a8b16f66a260f27f. Chain 2 (Bitcoin): anchored in block 954603 (2026-06-20T21:47:54Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c302239a-f715-492b-988f-8b6f725c345e.json and https://artists.proofprofile.net/proofs/artist/c302239a-f715-492b-988f-8b6f725c345e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Canta Por Mim - Karaoke Version - Single
Canta Por Mim - Instrumental Version - Single
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 0x3abffe508a4b8d38c652fcba6f93207dd44f41c0953b2b6114fc9aee242dd32c. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:48:44Z), 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/TCABU1490601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb39de062f40ae49726168b50013ba3303e6dd20bf92ad5c8de4f597b690dc23. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T04:05:18Z), 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/USTCD1086569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5647f3cf397d5510e5a8e0511be6ef4569efdddfbcb7f485ec29ac7c89a74887. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/PTIP10800155.