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 0xf63be271991772867cbb2722b30f9b8c12919ca0c717785a495c393832815389. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7b652d4a-0be6-4159-9243-f16cf38bc56a.json and https://artists.proofprofile.net/proofs/artist/7b652d4a-0be6-4159-9243-f16cf38bc56a.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 0xba3c4864de9a3928de46f4eb0d7cd6f09c476481b61169e9338078bb4abbb6d5. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:55:19Z), 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/GBARL2400170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2781212205000c0b2d86d61d4ec6b4a4611d2fc5cebb0a36c1a8332e1fd0c923. 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/GBARL2400493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba3c4864de9a3928de46f4eb0d7cd6f09c476481b61169e9338078bb4abbb6d5. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/GBARL2400170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2781212205000c0b2d86d61d4ec6b4a4611d2fc5cebb0a36c1a8332e1fd0c923. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/GBARL2400493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba3c4864de9a3928de46f4eb0d7cd6f09c476481b61169e9338078bb4abbb6d5. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/GBARL2400170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f37f7f38c6dbefda51798ea0eb5505247fa92750c0dcb09fe98ee67a720aad1. Chain 2 (Bitcoin): anchored in block 957544 (2026-07-11T09:08:48Z), 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/GBARL2400866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2781212205000c0b2d86d61d4ec6b4a4611d2fc5cebb0a36c1a8332e1fd0c923. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GBARL2400493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba3c4864de9a3928de46f4eb0d7cd6f09c476481b61169e9338078bb4abbb6d5. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/GBARL2400170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f37f7f38c6dbefda51798ea0eb5505247fa92750c0dcb09fe98ee67a720aad1. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T13:59:25Z), 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/GBARL2400866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba3c4864de9a3928de46f4eb0d7cd6f09c476481b61169e9338078bb4abbb6d5. Chain 2 (Bitcoin): anchored in block 957541 (2026-07-11T08:23:18Z), 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/GBARL2400170.