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 0xc6994e2efe1f34fd39b3a9c9f54d1050600566e8be944668d235123e8e1030cd. Chain 2 (Bitcoin): anchored in block 953773 (2026-06-15T10:40:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c9bf60e5-d578-4fb1-9a5f-f7fc4cc7ac11.json and https://artists.proofprofile.net/proofs/artist/c9bf60e5-d578-4fb1-9a5f-f7fc4cc7ac11.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Greatest Flamenco Sleaze Glam Band Ever! Greatest Hits Volume 1
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 0x7bfd003d09354b4603deb485fd876b52d11bf418a5efcd6f057a554b3339ed63. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GBACD1227403.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x969dfd23150be8b8b1ef5027bbed436df56cf243748369392c3aa8ec9e370990. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/GX5MV2401811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5e9841a285a4c21539bb5d7edb25b92775ce2db1d9d0f48258c61edf7e2455c. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/GX5MV2401812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf955f7a18a7816d2dc2b8a05c2350cb35311538951bd15f50b2af1998efc6b98. 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/GX5MV2401651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60e7db007a0a377dc809dc8e516af861838695cd59ea9c7bb7d7969941daf36c. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T08:21:21Z), 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/GX5MV2401810.