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 0xd3a5e78696ed5e181aab4fc86049d10117af884d7b096bea87c55deb6d0a16de. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/644374d4-6c5d-4f9b-9ba3-9c15a088fea4.json and https://artists.proofprofile.net/proofs/artist/644374d4-6c5d-4f9b-9ba3-9c15a088fea4.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
GameLark Records Volume 1 (Legacy Edition)
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 0xc97da9ab5feda64c06af82b631fc1ef72288a86a9aa5d78a3721f20b17a44e91. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPJ32171860 — a six-check JSON result.
Foregone Destruction (from "Unreal Tournament")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0526fc2ccf54b138dd4e7843a11f77ff319ee79c38eb13fb63b19171c0789f91. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPJ32171872 — a six-check JSON result.
Epitaph (From "Final Fantasy VI") [Feat. Matthew S. Harrison]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb85654ec236cc67a393f61282d292556b5682ad9944c2d1c87fada23560298e6. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USE831592928 — a six-check JSON result.
Fight With Seymour (From "Final Fantasy X") [Feat. BlackearacheXD]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcde7a593b2ba2738d198a2f2ae22409e194fd08ee4e4bda70a03889f7514d663. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USE831592929 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb70eadcff6d4783b03214bc094be4b41f64fa2d19c5d0c8d40a7a25edee5900d. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USE831592930 — a six-check JSON result.
Theme of Ul'dah, Gridania, & Limsa Lominsa (From "Final Fantasy XIV: Eorzan Frontiers")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3705841122df623711ca705831a46e866857d18f7c4b851460830f9186da223. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USE831592931 — a six-check JSON result.
Battle at the Big Bridge (From "Final Fantasy V")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a57be3c4d2bc136fac14beef0d001648f8b2390818ea9eb854dbeb3c39140f8. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USE831592932 — a six-check JSON result.
Desert Land (From "Final Fantasy Tactics")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe89a35a12df993e64545e846d147307a179059b46f3346178db12b1706256abd. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USE831592933 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x085dd5ad9c0631b9f280600a980f9d49644f195c7195406e7382b1c7364b14bd. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USE831592935 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd01fc947fae6b7728d6f8fcacb882aa0f6f61ddf8c4a595509ca0316b833d49. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USE831592936 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d5c216aa0c391e078f18a84ddd4fdcfd4f31c3e79974159ea3ee2026ef55ebc. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USE831592937 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8022e69ec29bf6b5c1bb4451d061ad491de1124244215422fbf081a47a62f4a7. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USE831592938 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb70f8c45dbf87c2544490e36c727c745a6fb5218063d8eb1a88ae1d65dd03532. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USE831592939 — a six-check JSON result.
A Place to Call Home (From "Final Fantasy IX") [Feat. TeraCMusic]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x724ad279b95dcdf20fd131f9d77957553e44397240d456c902f25b79e0c1b8d2. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USE831592940 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eaccc49883819978c9235a9229594301331648e83cfe8b4d3742f9a59dcf5c1. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USE831592941 — a six-check JSON result.
Eruyt Village (From "Final Fantasy XII")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c0f083c3a09e03716ed809a3f41ff6f5d7e08e112579a1c348cdfa655461115. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USE831592942 — a six-check JSON result.
A Contest of Aeons (From "Final Fantasy X") [Feat. PyjamaPantsMusic]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc89b71e555e3f9e65229fa294f9a392aa769ce998d3dc56544141af7c7ae2aaa. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USE831592943 — a six-check JSON result.
The Sunleth Waterscape (From "Final Fantasy XIII") [Feat. PyjamaPantsMusic]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bec38e3ff26d5f68e01c698e0ff56c18e2775e5afd5ecdf181ff1967f034154. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USE831592944 — a six-check JSON result.
Prelude (From "Final Fantasy II") [Feat. Soundole VGM Covers, Toxodentrail, Bassoonify, and Matthew S. Harrison]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20fd53b9246fb8d5b36d2f2395b3e332c39d301fb219c073532c9687b996a926. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USE831592945 — a six-check JSON result.
In the Garden Sleeps a Messenger (The Castle From "Final Fantasy VIII") [Feat. Ubaldo B & Jackson Alexander Parodi]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa599d30385f5f2b4d4d4df935da57457807b3b2826c66bd15fa8946dfe4e776e. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USE831592946 — a six-check JSON result.
Birth of a God (From "Final Fantasy VII") [Feat. Dave Sheik]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35b85b2293be2f1ae0046dde297b0feb6c313c4562d78956a40c7810ae57573d. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USE831592948 — a six-check JSON result.