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 0x1844c7411d93c1d65bd8c8e2369e08f7d2c9411abd2b00ac9eaddf6c413146af. Chain 2 (Bitcoin): anchored in block 953674 (2026-06-14T19:07:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5e2b1a6b-a357-45b5-948d-012d0b371229.json and https://artists.proofprofile.net/proofs/artist/5e2b1a6b-a357-45b5-948d-012d0b371229.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
A Star Is Born: Big Daddy Marc Story(Expanded Edition)
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 0x36870c3ccda97f97b8d81d2986ab8c51d3cc60e3bf7e99c6fe85dd6b2d22572a. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZK6K2445919.
Not Like Us: Hip-Hop Cover Songs Album, Pt. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe49024fc08cd4e3afa2708e15283c2fc62e0a83d897baf1f6725b70af0d408aa. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:47:21Z), 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/QZTAT2476091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00a164f8f9f7d001b439c0b6c8913c5208548e7adc2af31bdfc21d83a2ecf65c. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QZTB82419292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86057a5d7b8a61e29e2acfb10fd14639bedbe4f2de20080e0354a55849a50c29. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZDA62568596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb002cecd5817df34744fc433284c966d72aed334b4d2dbf4df22e0c9abdb325b. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZTBD2545127.