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 0x4218b0b106f45effe5eb8cde96f21467f823f5fa00adf20ad40a0decd2ead342. 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/509382de-d346-4854-9650-0388ec9c3372.json and https://artists.proofprofile.net/proofs/artist/509382de-d346-4854-9650-0388ec9c3372.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Aquatic Ambiance (From "Donkey Kong Country")
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 0xfb0260ba1991f8067d0cedde1ab0ea7c247bd13ea8240e8b19ef14674abfd02c. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/QZGWX2124106.
Cianwood City (From "Pokémon Gold Version")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaeb5c610b6ba641c82118d536139c51b1d921172fcf623bffa7eb2ad4f17706. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/QZGWX2124108.
Title Theme (From "Animal Crossing: Wild World")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa634a5bf50e97bfcb3893e402063ab26f16a69603480cb5071d7637b5d533032. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/QZGWX2124110.
Faron Woods (From "The Legend of Zelda: Twilight Princess")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbefc94b8da62ddc8cc4c6976f632c9048b1a2332499289f3d54099f9101612a3. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/QZGWX2124113.
Brinstar - Red Soil Wetland Area (From "Super Metroid")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2613ba6851d0e6fc43ecd47a0204605038f8c18e361a540b597dd9135c9f94f2. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/QZGWX2124115.
All Star Rest Area (From "Super Smash Bros. Melee")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e810e9f319b580455cfc2f0db1f421bfdf029fb6f34bdc512a41cb441291b46. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZGWX2124118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2d630cb203e1e71fadb5fca8a238860c5099b0d0f16c8ef3544413e146274a5. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QZGWX2124119.
Stickerbush Symphony / Bramble Blast (from "Donkey Kong Country 2: Diddy's Kong Quest")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bef8b4927d5415567d9552b010166de20c46f90cd6f9c58d7dd89de40145ef5. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZPJ32119435.
Breeze (from "Harvest Moon: A Wonderful Life")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49a4e1bc348364d07864ba183416e305b4f95ff1c8389f63361bad88cf85a204. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QZPJ32119439.