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 0x2ec6d16656c8cb67e6190483ad74f3061ef74dc4571dcb83bbd67f8acc4389d5. 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/e827a831-c504-4d2a-92cc-7939076b880e.json and https://artists.proofprofile.net/proofs/artist/e827a831-c504-4d2a-92cc-7939076b880e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Country Pickin' - The Don Rich Anthology
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 0xf1eede232037fbf80d5ea9df177ceb83df25a33c21baeb6e608312f9702a7cc5. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:59:21Z), 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/USCWY0610614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17e8b53849258928dcd8c898265b63b0be4ace32c308dde22557e5a1e66304fe. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T13:02:26Z), 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/USCWY0610615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc3640ea1d4146b37afb7a04ca3f2455e0c27b4422500ac9c8e6dd298b7dd352. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/USCWY0610616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe343a84c488130464f7647ed13beb71fef81600da0b27a90561fdea12e3c3600. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USCWY0610617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x458e21b9b6ca6560f361a0cf131147064ca2e634c9417ecea25fd4f9eeae2977. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/USCWY0610623.