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 0x133631cf4d361ecf12b33567a217cd070d3c5e8fc103675790fe9ae18278ce4a. Chain 2 (Bitcoin): anchored in block 954097 (2026-06-17T13:13:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7b1878c4-f289-48c6-bf40-f8d5e3a50739.json and https://artists.proofprofile.net/proofs/artist/7b1878c4-f289-48c6-bf40-f8d5e3a50739.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
10,000 Dominos (My Best Friend's Breakup Song)
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 0x60e67ed1c7e2393236abc99daaea4b742d6e3e06b4eaa5b60b6f682f2ebabb8a. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCAHM2325462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a32b4b0a955054a603c152e91c8b30039920afdf8dbe0bf81573a09a32a28ba. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/USDA12206772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9512c7de8c4ed2744b578e8909710f0972cdadf70e074aa0ff0a8e6cc14c4578. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:28:16Z), 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/SE6XW2392312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x146becb7354c339952101ee28f491eab07a0a313d20cbc0ba78865fa213089db. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/TCAJM2506148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5d560c684c9c3ba07f671225908f5264f77bbd75c55dfd2c5c604f303d28b33. 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/SE6HN2362105.