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 0x9479b7ccd75b605270da0ee23f97e595c7ba098881017b977fdfd7b8e12d78c7. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/edfc5587-7b00-4649-95d5-6a85ab702d4b.json and https://artists.proofprofile.net/proofs/artist/edfc5587-7b00-4649-95d5-6a85ab702d4b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Turkey in the Straw and Other Country Fiddle Hits
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 0x6c5444e500ed1d1f4c6f09a32cdada2560974230b2bf8bc042cd9a7d621c444f. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/USTC60821178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50729793fb5ea836655661c5096dec044b94bbb8dd993c2fa94fdb69cc6f4690. 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/USTC60821195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec70177e2396a8cd30697508e2397dc093c78b89860e16b1cc440fe8229cd821. Chain 2 (Bitcoin): anchored in block 956713 (2026-07-04T23:03:25Z), 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/USTC60821222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa70d0b2c54ddcc73502ba00bae8618ede4c240b2b49ecc59d59394d777f03d0. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/USTC60821232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95cd4f1325fbf2144a43caf2e33569ad43814fb3f976ebe21ba848ce537c3971. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/USTC60821255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12b69af1bcfaa6f6f820ce8987d4ba8ffa258d4bcdf16945485645b21ecdedd3. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/USTC60821268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5df8d3ecc887e657d660db1068de5e1fdab3c3f7285876461abb6904f401d4ca. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/USTC60821313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ae2260913acc36cdcf1619ec12957ab661778d009ec12dd10452fc39840c2ca. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:51:49Z), 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/USTC60821314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x277ced1a2958a0672a4aec18ef254967004fe91858b154e6a0e62d4374cf798a. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/USTC60821316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e8e6e1b933ae997f7e83e07e02549c406011183e048ebf586df4eb45710b3c0. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USTC60821321.