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 0xec0b5589e16166e76368b4df1322d1c846a15f60672679b2da5096e7bed24e3a. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/45c8e4a8-6b9a-44ad-a870-c9d4c40168af.json and https://artists.proofprofile.net/proofs/artist/45c8e4a8-6b9a-44ad-a870-c9d4c40168af.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 0xa864a181cfc091e9649de0dc54b0ea332d5c3e702e7d830c4622f489b417b6ef. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-19T22:49:25Z), 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/GBUM71403507.
One Last Night (From The" Fifty Shades Of Grey" Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cdc83cedac5bbfc1189724f4f98d9ee7d5399db612396d97fc751a05532cf7b. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/GBUM71602372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76d8a8f46b520d77f2c3e624a04272ce659c8187734d686a525f3a0d30021a29. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T15:20:00Z), 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/GBUM71602376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf965f38a979c630966cb6927911df621242e1b348c17d036f9cc57503177221. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/GBUM71700355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b1a218bcd083fd4ee50416a8895d0066fb62f7dbe82033d9e5930cbb1067fe4. 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/GBUM71701123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93b0339891b8ef5dce3699d2d5da6ce4400a8b73d8943c431fe43be3d9983501. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBUM71700354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf71b73c3eae8c9e0100508dbb3b0234287cd3517c7639648f9b2ea81ff51ad5. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBUM71600996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf71b73c3eae8c9e0100508dbb3b0234287cd3517c7639648f9b2ea81ff51ad5. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBUM71600996.
Hunger Of The Pine - Jody Wisternoff & James Grant Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3644b828e53ec565fe56338d211f33245a6391ad68d8cb6dde3d69b585d17b86. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBEWA1601701.