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 0x0e9ada74b2c9a4820a4415fca663cfe50bec7ac2842a9fb7abccc7427973a68f. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f0ceee09-2f28-4d2e-8527-71409626b162.json and https://artists.proofprofile.net/proofs/artist/f0ceee09-2f28-4d2e-8527-71409626b162.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Mis Corridos Sin Censura - El Capo de Capos
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 0xba47a9e2ac41fd87035e8f315d80ba7f78b21a69d56b327af8798c8496c4835e. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/USJ3V1886164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03fa76b89f987cdbdcf43ae5ee198e73e088956437d09403f2aeedd090097ec0. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-22T02:05:44Z), 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/USJ3V1886167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1702d5b4107f4ad7f728a77927a31ca384f729206b5b5f35220ace130bc8122e. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/USJ3V1886169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26dde96b4533c47e6470d8fa6f1c2cdfbfb4bfa807f4502775f5d0cd8ea5c8db. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:03:25Z), 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/USJ3V1886170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7d50ac2baf54d1e50d40e74f9f1d073eb017545b2975916f97c49e52326ec44. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USJ3V1886171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10ea7c48bcab9e975117233c6cb5cef9f8b201e95b9705a588c47f18e94905a5. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:48:09Z), 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/USJ3V1886172.