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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68f8f4b32c2fc8742cb203305fbb70f4d4103cbb0f212949afa665df1c4b255f. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8811dd9c-60b9-4882-8967-d0430f8b4bb3.json and https://artists.proofprofile.net/proofs/artist/8811dd9c-60b9-4882-8967-d0430f8b4bb3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
El Son Folklore de Guatemala. Música de Guatemala para los Latinos
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x754e759c9d3b4d55579f43b879cf023dc0bb24bd47c277d55eac5642a42b090b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GTA010703169.
El Son Folklore de Guatemala para los Latinos. Música de Guatemala para los Latinos
A Ti Jesus Nazareno del Hospital de San Juan de Dios
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bec4d525af1d73915187d2177ee0acbd71265fc27c246d3394725e76cb36f3a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GTA010704255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56d673e87ff71d946d7601700b8a3821fe5068ccdb5e1b0b3799cdda17894eed. 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/GTA010704266.
El Son Folklore de Guatemala Vol. 6. Música de Guatemala para los Latinos
El Son Folklore de Guatemala Vol. 4. Música de Guatemala para los Latinos