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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fa0414be753cf654a2ff4813571a32dc55d02611db61f6bc6f397cdca4b536a. Chain 2 (Bitcoin): anchored in block 953713 (2026-06-15T00:33:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/83c0d643-636a-416a-b74a-4d0c864dfae3.json and https://artists.proofprofile.net/proofs/artist/83c0d643-636a-416a-b74a-4d0c864dfae3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Moonshine Music Co: Roadhouse Blues 2
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9df6f6943ccb3787ad7ae4207f26666ae4eb0c61e38d12025fabae8431e79a2. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/GBBPP1853522.
The Moonshine Music Co: Hill Country Blues
The Moonshine Music Co: New Orleans Brass
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90ca49e737b24390db35e5b8be215feeeaef9164293d17431893c9e1b62e7e45. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/GBBPP1956516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5385cef1b6d6219b245240118d57e8531fb239cbe29e949ca0b834ac5f29c22f. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/GBBPP1957286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x802a029b8cf653a050d27bd812336574389451da998ef2cbb27d3f137cb9a6f8. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GBBPP1957287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1957744cd643d2cdeed0f3e86213e79962fae45a3916dc7819b6daad6e274a8c. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/GBBPP1957288.
The Moonshine Music Co: Holiday Hootenanny
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c9f015706939620a335e2bffa39b949d2de80d0121d3621d5c0075d4ecb2023. 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/US43C1300189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2234f1cfadf040039d3d1c944a2ad6e371e05904c0120ea0fe8f252995e4e46a. 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/US43C1300190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa272b49242f5278ab1acad9a66c4732f9ac5529481a1776b9b277a1458e8f589. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/US43C1300194.