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 0x237c37fe08a16d285b2d1739f9dc16114b98fdca91772cfe890d53fe3c32112f. Chain 2 (Bitcoin): anchored in block 953762 (2026-06-15T08:21:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/baefb591-4068-433f-8453-40828ee3ccc5.json and https://artists.proofprofile.net/proofs/artist/baefb591-4068-433f-8453-40828ee3ccc5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Airlines (Original Music for Chubika's Fashion Show)
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 0xcd7a29b38384f23c38b0d7463ae4717b7ed1801b5600cf0cf11edd8b44a8aebb. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:07:27Z), 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/GEAOA1910007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x422f359e726f8eeee13c19b3f1d1b04f73ea615f8a6f9c6d44559289cc712aaf. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/GEAOA1910010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b739a6797d15ecee4f9deaff3017fdc44b49e16d5824f94b4a51ccfeb961fa8. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/GEAOA1920001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a7824d9ee576a5e8f8fdf14b307c729282e160b3cabe7031bb9308bb730310f. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/GEAOA1920009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3542101fdcccf890d9b06081e39fdcf0d6c5eb397f7527f1fe746599a3f3835. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:07:34Z), 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/DEU671701062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6baca931913eab5782c0bf34c1e81ace6cc82120376a173bf9e66a43f0ff303. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:31:29Z), 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/GEAOA1905701.