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 0x8a69ecf4bd83fb915dcd7bc11dd0c4d46237fea2370682ee2f3c0eb11049ef75. Chain 2 (Bitcoin): anchored in block 953777 (2026-06-15T11:52:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ce1db29b-79b1-4f69-a0d1-01dee2194680.json and https://artists.proofprofile.net/proofs/artist/ce1db29b-79b1-4f69-a0d1-01dee2194680.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 0x3f073c9f0b8c8538fdc2024e6ebe509c287198e516be6031a3c7540d9481bf53. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/DEU162406989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6584f6994f69ba012864099381c8362771242d93d49213062293627b457aca4. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/DEU162406988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f073c9f0b8c8538fdc2024e6ebe509c287198e516be6031a3c7540d9481bf53. 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/DEU162406989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe67da873c8c7e2556a36ba4c4b23b00c4b6f8f3dd6d28161b03f922e10a8118c. 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/DEU162406990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76a23af228b084fa4ad27f84825cf0d153647398c53379a3568b5b22c1ab1eca. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T04:21:00Z), 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/DEU162406991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c3cecc85d6827996afd301ad1a75efae46cac270c269c3f9927181407d5d9d5. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:01:59Z), 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/DEU162406993.
Too Good To Be True: The Very Best Of El Records 1985-1988
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed50764a776645cfdfef0eda67aa041b275a6d724313e74a6a98a81cb16a2b68. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBBLY8800149.
The Ruling Class - The Very Best Of El Records
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed50764a776645cfdfef0eda67aa041b275a6d724313e74a6a98a81cb16a2b68. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBBLY8800149.