right|thumb|Rachael, a replicant played by Sean Young in the 1982 film A replicant is a fictional bioengineered humanoid featured in the 1982 film Blade Runner and the 2017 sequel Blade Runner 2049.
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 0x53947dae29cdb56d5e2e8500587eeb80909e34eb5f7f1e0305e3e3bdeb3c20b0. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6620dc9b-059a-4823-b1cd-370dede2755c.json and https://artists.proofprofile.net/proofs/artist/6620dc9b-059a-4823-b1cd-370dede2755c.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 0x3796fd369bd3844971d058f4476de09facb87093d90fa30818e8c14bf9f2275f. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/TCAJP2518893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e4460d3b4f079904a2cc1dc3e00e51436770ba5b81eb968418bfe262479c15a. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:44:48Z), 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/TCAJP2519107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ead491bd37af6a6a62872b03017f5b69341afd0fd12561f3074b4ae2f205f9b. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:35:17Z), 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/TCAJQ2519115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b2a17ecfba54dc2e8b23cdf8e23e8beea79eee7fc3ec5eb0e6d57714cc93089. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCAJP2519234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ef435338b35db33ca2028a1d5d701f441881f2ba9360bc36b272423625ff98e. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:26:21Z), 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/TCAJP2519204.