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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c9ba2e0c55240f19c4ed87ef170cd08cda3f257da99a887fe9a28d5c23e5c6f. Chain 2 (Bitcoin): anchored in block 954717 (2026-06-21T15:47:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f2e5996a-2c2f-4ab8-97ba-d8859c9a5da2.json and https://artists.proofprofile.net/proofs/artist/f2e5996a-2c2f-4ab8-97ba-d8859c9a5da2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Chill Times in the Garden - Yoshi's Island Remix
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd52d70608c54651ae97845ff0bed77f08a84131e607e60140928854e8e14fcef. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZDA52139262.
The Place You Go When You Die - Mario Kart 64 Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x624f2414ea6df20ae69690f288e948ccf8a401ba9cefa8b75f8547ee08624cc0. 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/QZDA52139263.
Day in Kakariko - Legend Of Zelda: Breath of the Wild Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae765fe7dca2d5b7ad1ca900bc487ccf2e9e652bc6fdd8308b317fe0737c96e8. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZDA52139264.
A Great Day for Fishin' (Animal Crossing LoFi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x930a29c281336692236e4b0f4319eddc0b055722f2c622a5a49c86016df4d244. 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/QZDA52139265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36f04c2d24ff85bd1ce9714cba81324652981f541add51c71d27a621360c6b37. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZDA52139266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03033c3f75781ae3046985c4dd96090789f8009e07488535f7e9c93b916c3523. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/QZDA52139267.
Underwater Elevator - Legend of Zelda: Ocarina of Time Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c6bb08b2f418c224641f2722167660983c18f28813dd30670816fc1030f844d. Chain 2 (Bitcoin): anchored in block 960339 (2026-07-31T03:13:37Z), 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/QZDA52139268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aec33b3961c4473041eb44be1b2e3b1127cbb20dd1ef3238ed4a44b98114cba. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZDA52139269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68d515eb738ec1900b0154ae5114cb24a31865dbbec0aa04aa4e1d99e4fd896b. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/QZDA52139270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66fa659d4a5f8d0987b5cdf09cb444be5e0e1c362e0efe8642e6255324211d33. 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/QZDA52139271.