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 0x4dcb83d85db9a832f2470ca6e631d3899b408f239f9a6721e921ed0cce6509d1. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/28cfe9e5-3531-4f87-95e8-d0d46ed3197b.json and https://artists.proofprofile.net/proofs/artist/28cfe9e5-3531-4f87-95e8-d0d46ed3197b.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 0x8672dc10d4133dc223e7b493585c73b8356e2c68cfe238d6a73f339ef7e4aa1f. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:19:10Z), 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/BRBMG1701304.
Fecha Seus Olhos e Juntos Recordemos (Cierra Los Ojos Y Juntos Recordemos)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6173e091e18ba77e8311cc98fea7c0cdadedd88a9860c474e2831877c7b3fa8e. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/BRBMG1701306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0686a87e6325cd1f578f4c02e3b7d3df6616b8529aa1326888f0acbea6dd0e84. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/BRBMG7700053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37c83d4eebd18b67107fd26a8a7a09d74ccfde263d9c5ab6dfd9f6a4e5970453. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:19:30Z), 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/BRBMG8100080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb58dccd643ee7d3eb9e140f076119dbf18ca53f3713dbeb00a818fb45d195a1. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/BRBMG7700049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78e1f88bbcba3d61caa5307511d50fe2cf4a98e3a65b4615d2dd2c863e60920f. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/BRBMG7700273.
Por Muitas Razões Eu Te Quero (Por Muchas Razones Te Quiero)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x490b66d4d4bac8b9932f128fb4fda2585e79b3552acd6296ea94307840611082. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/BRBMG7800060.
Como É Bom Te Amar (Island In The Stream)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5adebfd0942fd04b013364f00d0187435b4340ca52b854902cb13108abf2dca. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:12:10Z), 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/BRBMG8100081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd54d3c5776345a1b91f11dd32cb0198702fcfaa2ddf84b77eda2450f7b63b52. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/NLRD52348419.