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 0x3178924f43b6b22b5bd4f8d2357985fe07bd5703152d096676901e12280909ac. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d325d3bd-f959-4ae2-99ff-92bd470fbac8.json and https://artists.proofprofile.net/proofs/artist/d325d3bd-f959-4ae2-99ff-92bd470fbac8.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 0x58627b04e8ea82bfe73a2285225c2a9fb5ea76313805693f982cb8dba3f3a533. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:38:26Z), 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/USDY41614231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42f33938037aa284e7bb188bc567bd112059b42f1e0c0b77a6688225d5d5579a. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/USHM21560233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x859ffe2c88c9c6ad7d94b7942187b20676f33a917b6651985a6f989f9839d18e. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T04:42:14Z), 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/USHM21560238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bebaee8ff14deae9bac19210b2690ad16263d1d2e095908d4ae01d8f6b31859. 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/USHM81583337.
Estamos em Festa / Festa do Rei Jesus / Eu Tenho Paz Como um Rio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4c0d5c392746fd979eef1bf436a94b544d91d476857fe238dd26d7462f2d464. 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/USHM81583345.