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 0xaef4a589b4076731b60541457629052f3ad924a2519f110d128209de80fecf98. 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/685be9aa-1f21-4d45-a39f-96135f0ea2dc.json and https://artists.proofprofile.net/proofs/artist/685be9aa-1f21-4d45-a39f-96135f0ea2dc.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 0xba305d66d6fb02f8d8d4e29c53e7a04d44d5ae979ef2bd6bb1330c9d837f3950. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:17:57Z), 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/CAVU32300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58fd23f44a81fb529e3eeef821052245a94cc236ce90fe76aa15fde124a50cf9. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/CAVU32300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x391f10d372c1259cc2a221b139fcef9c37f458293a26f85e887d9e9933ebbce0. 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/CAVU32300009.
Cathedral Mixes - Hymns of Autumn (Slowed+Reverb)
Were You There (Good Friday Prelude) [Instrumental]
What Child Is This (Midnight Cathedral Version)
The Old Year Now Has Passed Away (Hymn for the New Year)
O Come and Mourn With Me A While (Choral Version)
O Come and Mourn With Me A While (Extended Version)