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 0xbf78898659aefb3654ffc70747fb811ef6ba6149d71c5d20f0b6206ed56a0ee2. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/882357e2-9ede-4d25-ac9f-bfd01a2c1d93.json and https://artists.proofprofile.net/proofs/artist/882357e2-9ede-4d25-ac9f-bfd01a2c1d93.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 0xafbfaa11e377a1168435652502a718740b5722197b7459a81db54de2a3555294. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:57:29Z), 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/SEYOK1805512.
Blueface (Preach It (Christian Server Parody)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7688ca8ecf3f3364e83961679b9aca370a46b885c61d10f948d9d1e0fbf5469d. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/QZES61932388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fdc2d0de621af6fa1d866847c4beaf85ef19def37fd7fc287d1debc1eb96543. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T12:19:51Z), 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/QM4TX2037372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x328123a8deb1dfffbdb6c7960c576009d2cd0319d871b09715d4126207ee03bc. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:25:13Z), 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/SEYOK2042935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x103ec509a16885abaaa40178de6ae576a2b9e3ace899b6e5e6284c028fd6e160. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TCAFD2052382.
Serena Williams (Back to back wit the racks)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa31812b65225837afd152cfddb1795f45dc2a21716e00bc0d71b3b2633da1e2e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZVEM2311637.