1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xb05a62948678ce7366d6a842727cc129e0ff76bf8fad853c8f4805cafa714690. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/54eb97a1-74f1-4b99-b9e7-25cf76b6fa96.json and https://artists.proofprofile.net/proofs/artist/54eb97a1-74f1-4b99-b9e7-25cf76b6fa96.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Stopping by the Woods on a Snowy Evening
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 → block OTSBitcoinBlock must exist at that height 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 0x2d5697ddce5c87d3f6b8af2643b2319b50c3d64580ef0b9c12032312d8515eed. 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/USX9P2030438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2acb01ba0f277b32c5fd5c7cda1be9ef41a3f5fbe09f954ea0c92f8af2518cd2. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USX9P2019372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ede9e369c63a7dd729c1f76020557da4638291206335a21f44bd7e0c67cf533. 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/USX9P2019379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02d362b8279c4cd057d3c57aab3fc3f9bef3bcd1b91c30ea076ebc94ec3482cf. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USX9P2019380.
Four Shakespeare Songs I. Come Away Death (Twelfth Night)
Four Shakespeare Songs II. Lullaby (A Midsummer Night's Dream)
Four Shakespeare Songs III. Double, Double, Toil and Trouble (Macbeth)
Four Shakespeare Songs IV. Full Fathom Five (The Tempest)