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 0xf22f0217c6d17054d6828b4b5d46b4c985f37b03c295f76fc8584c60c255391b. Chain 2 (Bitcoin): anchored in block 953783 (2026-06-15T12:24:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d556cbd5-b593-4d39-a5a8-2649a3d254df.json and https://artists.proofprofile.net/proofs/artist/d556cbd5-b593-4d39-a5a8-2649a3d254df.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Who Let the Dogs Out (2K14 Club Recall) - Club Mix
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 0x25a4ed4684bdbc216a4dde9343e5e4295dc82312c5f40d02d53c88599c17a701. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/DEY201300293.
Who Let the Dogs Out (2K14 Club Recall) - Radio Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8e9aa7004fa98ee9d94fb3fdd9334cd18877a3fa8e64816e81c819fcc592a8c. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T08:32:56Z), 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/DEY201300294.
Crush (Chris Rockford vs. Jennifer Paige) [Club Rework]
Tango Electronica (Julos 2020 Club Edit)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4caf275df84da8ab07f6071175805fc5e861d0ef69a7af071b0faa972848d0d0. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:27:48Z), 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/DEY202300064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ccfb2f3f23efe6ce1760804a6d1ae58795da0b1f3faf01e0e3048b97d984cce. 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/FRX762358190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa9b1000dcef44918f676983cab44fcbedd5975a2b3781d4437cca02403efa12. 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/DEH742505964.
Crush (Club Rework) - Chris Rockford & Phil Dinner Radio Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff042591c5bef5929fcae517c72b7616bfb796d7bd09b1faa271fe6f573b7653. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEN951500279.