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 0xea79809a33fbe5f5627280d67072ba7980d1c244920fd986b66d92bc25aab69a. Chain 2 (Bitcoin): anchored in block 953714 (2026-06-15T00:43:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/85b6785f-ec82-47a6-bc7b-0c128060eef1.json and https://artists.proofprofile.net/proofs/artist/85b6785f-ec82-47a6-bc7b-0c128060eef1.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 0xde0692238b29dc71b2b62639b8c99bba6d5f62921526376fb43789d3e3dd48b1. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/BRWNV1700061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9916e8beb52a1e5bb8f64cf5176ad57fcd2d5d55f7add5bf58a02e46238ef21. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/BRWNV1700088.
Entre o Jantar e o Café da Manhã - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf7d344b4703dc49b63bacda88013c9d106ff848591cca7d7810e252c6602be9. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:30:24Z), 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/BRWNV1700094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbe64eac46519c930495d636fbf9b501ca1c89eb3bfe8305ed82d871c9f6ea70. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/US7VG1720976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26000b54fbb7068c9a664574dbc3572450c990b51e5e560a3cb71e3a600ee04b. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/BRWNV1700064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9e9725a253a714dd29c2bc51125bc9b8e01f351d04edb71956e09edbee944b9. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/BRWNV1700091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecfe70be2ec6a7e8e27fdb9c100ac94eaf9dcaa83b7c4d9ceaaeecef91ed9ea5. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T10:30:03Z), 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/BXA8E1800198.