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 0x21b025b14b8da9a085d603eebebc7b3a597c020028d1482f54d1ef837fa1fd83. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/365eb187-c8bc-4802-ba9f-a114b7231d27.json and https://artists.proofprofile.net/proofs/artist/365eb187-c8bc-4802-ba9f-a114b7231d27.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 0x72ee6cb2106f924ea4639d323490fd502831b5685519ace01f0afa699e2fc9a9. 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/AUZBC1400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab836d6489f24a7a2ae5548b7ecc2fdad603138a1864dede52369f8ac1a5a795. 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/AUZBC1600002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd746e366de54381be79899c1ac4d957a4bf4b3744fe04f4c2273b9e10d40b5b9. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/AUZBC1600009.
The Imagine This Acoustic Expansion Pack
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb39aea1adc0df45492a521ced8863551733c3574b324c289418e2178d7c7ef2c. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:00:43Z), 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/AUZBC2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1a685b1eb930ade0222043e2831bbe5e3860ddb8f29fbf2ef9a9b50635e41b9. 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/AUZBC2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1081d7b438e35b6dabc723c52125010d95a4c08718188d6b58ad60e6872266c. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/AUZBC2500001.
Don't Wanna Talk About Love (Live at the Roundhouse)