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 0xad5052231680341bcd07e70a25404324fd3e9894e8480142b86068d404cc1c60. Chain 2 (Bitcoin): anchored in block 953654 (2026-06-14T16:26:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4933946b-1cc5-4a91-8496-16816f8237bb.json and https://artists.proofprofile.net/proofs/artist/4933946b-1cc5-4a91-8496-16816f8237bb.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 0x270560aec0d22b736f25a114ffd2eec683b882ee57c15d9c21e9dccfc3c5c693. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T11:05:19Z), 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/BEN582400611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8104ac6282e7fff999a564e3387b060ac049e9efbc07ad3b4134d05952a07d44. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:45:40Z), 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/BEN582400612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe1ca30da97374f92712849b792033c430885d2396ae9b2eb1f2ae9cc5f2cd56. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/BEN582400613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8602dd005640b28fdcfd2274d716afbe46cc89730440f7908bbee8bf1d1885c. 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/BEN582400614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5b93f12f3e55bab9035e86ae9d8af63edf2be173d881c01cca3c5f872de7992. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/BEN582400616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50791e81c9937c60961bd3c8899310d7506d548f51d6c79b06fa0a012fa718e1. 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/BEN582400617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb02ce209aab04260155601bd6d01c2a4b4f7f751127fcf56e9d5de5c8d72e869. 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/BEN582400619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x981f3946eac83b877d802cf6ef96195faef3f48265d9c3eff512cb179d7f7b5a. 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/BEN582400621.