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 0x349b8d2a4dd01c28b4e956f2ef63d01d4303c6eaa60035601f53c639b93d051f. 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/b8e91ca6-bafd-4ebe-94a0-e68cf5e4b4a3.json and https://artists.proofprofile.net/proofs/artist/b8e91ca6-bafd-4ebe-94a0-e68cf5e4b4a3.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 0x8d95ee6c1ca1bb39b9e91ad7a6b63732e87ba822a3d29b8f9d9d3b1b54f8dfba. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:17:54Z), 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/TCACA1455742.
This Is Halloween (From "the Nightmare Before Christmas") [Piano Version]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b7dc8fea02b848a4ac6f9dfbdfe1ed0843f028697de24baa24c6867b1ea4771. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:03:52Z), 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/TCACA1455707.
Friday the 13th Theme (Jason's Theme) [Short]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf445c8da4ec671591afa78425178df6f7100ccbb40e7502e7b9daa3715e71751. 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/TCACA1455724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc976b7cab3ef1390b24ef150a23ecb9b28cc96a019233be94816cc7ef0450f19. 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/TCACA1455746.
Davy Jones's Theme (From "Pirates of the Caribbean: Dead Man's Chest") [Short]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdda50d5807c27e6b9dca3cff47992e68a51e48cdcfbe754e56690ec45cf6a698. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/TCACA1455780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89df4fb1fb6b5c34b330657e4a244c7ce38ca5c9b7222ea3d1d9c474f48714f6. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/TCACA1455753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45ed37709d8005abc5df346a2d16181a933216c8beba3544bf7010f4ed2b46a0. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:04:37Z), 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/TCACA1455736.