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 0x818814b550fbfa017d0a5671e15dc64625a000c2585addfee19b3e9beafc3a7e. 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/ff0a8943-3c95-4f8d-b913-021ab75e9909.json and https://artists.proofprofile.net/proofs/artist/ff0a8943-3c95-4f8d-b913-021ab75e9909.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 0xc44c65b13ecb6cae29cef92604eb1150183290f798db72059b3e3901f6d9ee3d. 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/GBHBR0405463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9370439f06399124f79f7475568684b5feaf710f49d3f519475ca80147cb233. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/GBHBR0405464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc41f38ba9ef89e7dc4c6d7b5d2ba6dea811750adeb7e09c3b934c5a523e4123. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/GBHBR0405465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49d71541f52caf3d7b8a5aef39945d669e6e5d45e6651060ec7a8aaa83f4adac. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GBHBR0405467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50cc04a257767f1518407064e9837fe49a88bbc6f6ca73e3f3e72a7c242466e5. 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/GBHBR0405472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3a7b277d2b121c3f8d235659a43e97c319a8358a9b39889880449733acdbdbc. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:57:02Z), 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/GBHBR0405452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1655b89f1faa8454362c6a64d201cf57ad7b59e6a2f13004a4f2347b44b6a3c5. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/GBHBR0405473.
Radio Drill Time - Postcard Single Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b99ba32c0598256ad9cec54261850bf96e6c85e0ec635b88fea688a7eb33a79. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/GBHBR0405475.
It's Kinda Funny - Postcard Single Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c1d457d4d34dd3f9404e138236bac21d8d72875e8437e9da0007d075c44f308. 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/GBHBR0405477.
Chance Meeting - Postcard Single Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2c4bcd8f44754c65673b492144f662230ef9a8e46db5e821172e61234b17a2a. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/GBHBR0405481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20da53e9f4bdd0242a9eb337cf90207a294595313acc9ba0a146ad826e9a271f. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/GBHBR0405488.