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 0xf1e2c286f6ec0fcf9d56d0d9cdfbad97142d18c91c1a3d9f7a5a46d99f7399aa. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d52d70f9-bc21-4811-b53e-56bb9b7fed44.json and https://artists.proofprofile.net/proofs/artist/d52d70f9-bc21-4811-b53e-56bb9b7fed44.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 0x1cfd817eb912209efa9b13c1fcef8bbab4743ff1902792f3f30a857be59a61ef. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/PELV20707005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c110adab650d86c896b65f6e27f2ef95045c74227a7bb7c9e4098f7d1643a6e. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/PELV20808005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5e0a79bb3504ef9fc29cb9744fd069627c0530f76c2c7438cda6f236e8b8f6e. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T03:55:52Z), 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/PELV21809012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fef4e99b57da2826473bf951be98633eaf535cbce867a3698d369a91dab991a. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/PELV21809006.
Estoy Sin Ti / Como Voy a Olvidarte / Los Dos Perdimos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7737b8a5247df24832f5ff3e92695cb669ab83fc9c71cba3f806b5620c21508e. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/PELV21809003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a7307f35b6e13acd95bc1ad155cc7e67b93644eac0751816884a80aa6e381ab. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:40:45Z), 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/PELV21809018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c08846b8ede78960d24b5777fe1248d402d5d8a1fa6ddd7bb43f5918f3ffb77. 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/PELV21809021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62fda8ff0508fd2d0d5cc8f341a77a6ee086b2c82acd3a14833fa9bb208ce117. 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/PELV21515007.