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 0x6642f0a948eb3708fa82035e27f5826bc5f9f065150b780f9b11118bef24e9d1. 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/4c030815-3238-4a49-956e-4c605bc40f1b.json and https://artists.proofprofile.net/proofs/artist/4c030815-3238-4a49-956e-4c605bc40f1b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Island Of Light, Pt. 1: Cova D'en Xoroi
New Compositions For Concert Band 58: The Island Of Light
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 0x84cc8aa2bf4e535808aed7bb45b0f390b48a110bbeb0919c0a1dfbfca676819d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QMFME2078248.
The Island Of Light, Pt. 2: Sobre Las Nubes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e6df6f8270e9481a5d79dac61930b39e07b25873b0167dda005569720b6f5f1. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QMFME2078249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9dc2a1fbd4e37ae83647d61b0b67a0a772bb9fcfa04ef4ea945e2ed1e003763. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QMFME2078250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa57449f8fd6127b5666eb085484fd26c39e0f6eb7dc74bf727b9c1a1e1b8de8a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QMFME2078251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8da23979ed775697746264a87e367c11f0e6d48b46f74bb7b2f2192bddbacc3. 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/QMFME2078253.
Tulips From Amsterdam (Arr. by Vincent van den Bijlaard)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc41f4359e64f73224528d4e258ec1535115b6b78e181144f6133578dbcb31f68. 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/QMFME2078257.