1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x1bf9c70cd2bdf6cb779d68090ed234371236cc250786496a1a72d4882088d4c2. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ecb78b01-b1f4-4613-aaee-37d5a0782099.json and https://artists.proofprofile.net/proofs/artist/ecb78b01-b1f4-4613-aaee-37d5a0782099.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 → block OTSBitcoinBlock must exist at that height 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 0xde7dde922cb9ac771eda92c392c26a33b73d9be8e41c601a0201d6ed4392763f. 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/QZFYZ2240489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe868de23094470a86f50aac6b89903e6cbe8d8013c7c710d3345c13c340415e8. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:57:25Z), 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/QZWFH2395667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdbd05a3fbdad1b7540ba76b678018cdf77f9d9b8ebb5dc80ee25fa76ce06587. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/SGB502394165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc38a947b8f24ea1344d6049cec2fbb345a51d6c91fc431f3dfd513810cadcd96. 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/NLRD52119923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24d67c21bb19973f4a419abff299ea7b86c4edf425192d35027941cbaa2de4f2. 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/NL3M12501667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04ef7fc8c2f4ec3ad080b42cdccb609cafdd52e22c148b5c36f01a026c7019d1. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:27:34Z), 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/FRX762568292.