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 0xf5e4000b60d2cc54d4a25481537a5766a1cf7d044f4ec6e60f6c3135c8708b5e. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4d38bf4c-4d4e-4190-a712-bfe5d4537402.json and https://artists.proofprofile.net/proofs/artist/4d38bf4c-4d4e-4190-a712-bfe5d4537402.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 0x0b176adf8cfdd0e64e44652daaaddac94025337df8b318a820700a90716cb920. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/USCGH1264395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab82caa661e7a882c0641c0a25f16218350bb11a99d4a83086a70260d7b3132a. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:39:39Z), 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/USCGH1264401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88e756bfa9e720ff21037e5ef244d142bfd29838faa73a00122d4ad94e2dc2a2. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USCGH1264402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd53583b87038fd9bb20f8c590b1fba2dab196431b033f909112be157fba4cabe. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USCGH1264404.
The Whiskey Seems to Always Change My Mind
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe09dc7736dc2b561b6b782e79fd08c00a67b07a6b5ab296945fd2a4f6215386f. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/USHM21311836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53697f797caefb3edfc5c3f8552272be1d4570eaeba520d8309eb773aef628d8. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:32:36Z), 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/USHM21311841.