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 0x445efeca3a55e2a40dd2b7dfdb0a6e79b25fd870f8d1c4d41e434c1b7220aaa0. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/995e4f49-3019-43b2-b9bc-716b2222f665.json and https://artists.proofprofile.net/proofs/artist/995e4f49-3019-43b2-b9bc-716b2222f665.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 0x510c750748f4501575cb5706ad9e71f6a1c2f18fffa95283d3fd0e7c8882b586. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/USDXS1906533.
Titanio y Sus Amigos Presenta a Trio Dinastico (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa303b053bb8671932ad12bc3989c8d1fb133f7644c74954594f4e41280d1bbdf. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/MX4972138769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd61ad9efbf7a0ec391633a63e1d98580f4cc5b30a9ed766e89b42c78ea1595ac. 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/MX4972140661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab3b0997840878ad2e1785bbe7eccbbac4d0453b2df102bae24f88c70d4779ab. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/MX4972140668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40dd6d511389b7c0771a568ca78a72d0e2a5d34005e885021afd6f07bcf86996. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:54:42Z), 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/USHM92289437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9390d0e569a3453cb41af49c9b4999c34c624772d3268a3b18d0d73b62bef71. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USDY42302203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7945d6e21d69fb612d7e19abf4308aa8f333c60d99ecb3a5d9d84275b627bf3. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/USDY42302212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa31680d010de37e0238ab050928aa011f60a9d3423c86f0dde57deca7e5ea114. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZTPX2317178.