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 0xbba21f65619248e7f5226d858d1297a1ee5ba524d7300fcdfdecd09b896669b2. Chain 2 (Bitcoin): anchored in block 953645 (2026-06-14T14:31:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4144d2f5-369f-4d53-add1-febb09b38ece.json and https://artists.proofprofile.net/proofs/artist/4144d2f5-369f-4d53-add1-febb09b38ece.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 0xda35c46d2ed51457c20e9772ab1f2fb5f58b54cb4674cb90bf64bb41d90c6fe7. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/US1ST1054052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x209d290302e97427e8803b324c05bb3af1d208291fd93e4c319f3a1f842e8962. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:23:21Z), 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/US1ST1054056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc828ebf0df9ef2bba8e6969f97991594c3be988bbfbf81e80a2f9c98381fb663. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T19:00:10Z), 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/US1ST1054057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa69d9cd01f3a49bdfce76b6cb8a414192ce911b008e80b931839f43d2d43cc75. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:32:06Z), 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/US1ST1071084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x626e2609117f423fb0cab2765d5f79dd329212fbaa110b4142a58c0216b7f685. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/US1ST1071085.
Film Archive 2 - Familiar Tunes and Cheesy Muzik
I Heard That Santa Claus Was Coming Tonight
Honey Don't Worry (As Featured In "A Good Person")