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 0x2b8f8e7ffb4ebde220bfa71842611f8cbed1bd2c392dcc7fa15266ab3c729bda. Chain 2 (Bitcoin): anchored in block 954647 (2026-06-21T04:36:58Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d677a76c-0ad9-40b1-95d9-97e578dd4a12.json and https://artists.proofprofile.net/proofs/artist/d677a76c-0ad9-40b1-95d9-97e578dd4a12.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
2 Phut Hon Funk 2.0 (Slowed To Perfection)
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 0x54ebbe5df3967a4b2dad0b7aacbcca36d003df4556280c3ba03a1961587fa258. Chain 2 (Bitcoin): anchored in block 957778 (2026-07-13T00:08:48Z), 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/QZRP42557720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4be218beadd2eb68fb24d12002bcc6ff185c2dfb89f17160159357343218c0d5. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QZRP42557722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5c6c182b39e6135761dccb2fd6c94bbfad2c8835193fcb59749ea219a4aadde. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/QZRP42557723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b9baf2b1d52f36aecc98c39aee576ca5722b1c50053e76c359c6a34e657db4b. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/QZTAU2596275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee97c5b87f5a799d64855d043d3c5700821848f191f256a24949b1f9036bd2d9. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:32:58Z), 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/QZTB92546336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f4f17eca743fcfbbab177f2c521d9267443dee0810d40fa0490c7ac14f6c0c0. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/CALVP2515498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7a2ceabe827c6b3b52e6b42523bb1771edc5f3f803a9d1c1822357db97cca1f. 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/QZWFG2567342.