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 0xa5080e4cae5e9906365d468854b67733e0a7a573c552f2855b1f7315d6c7ce73. Chain 2 (Bitcoin): anchored in block 953654 (2026-06-14T16:26:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4835de1d-e30e-4084-a955-254d595c3abd.json and https://artists.proofprofile.net/proofs/artist/4835de1d-e30e-4084-a955-254d595c3abd.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 0x46c625ec91180d455a62ddf91252ea44eddc602869f7851e0f4b580bad6dc242. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T10:52:33Z), 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/GXF9Q2558124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9771debb50d5ae542a05f095ae16bb2d9ac445e5a77325b0fe18c6daad8aae64. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:09:48Z), 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/GXF9Q2558126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37fb061f726084e00c6de6ffc706bdcbdfd7562feb38514685b70d95bbfc3d03. 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/GXF9Q2558127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd4b1464ff918a9f26c47217820e67953b4efbee4297e6539c191f03d3ba4af8. Chain 2 (Bitcoin): anchored in block 958351 (2026-07-17T02:38:05Z), 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/GXF9Q2558128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37ff9abda36714330826786a456d20285e2b792b8165e8a89a1e14cfadfb8e1d. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GXF9Q2558129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca5af5dae70460c8d001855d93121f33b6f6ee2c6b65e8bb72859c3aaf3c56d0. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:35:47Z), 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/GXF9Q2558131.