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 0x762dd204cf8daac481e0e7225901ecb10501b0dcfa7524ee2119cc3e9719ad7c. 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/3a1c26c1-fb56-4045-bbde-4f611671dc06.json and https://artists.proofprofile.net/proofs/artist/3a1c26c1-fb56-4045-bbde-4f611671dc06.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
National Park (From "Pokémon Gold/Silver/Crystal")
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 0x96660e3e0a8bdb26d6e708c7b98fe8e076027060ff82d8fbe268635f93d0ea58. Chain 2 (Bitcoin): anchored in block 959054 (2026-07-21T20:19:31Z), 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/QZGWX2121221 — a six-check JSON result.
Chrono Trigger Complete Soundtrack on Piano (Part 1)
Manoria Cathedral (From "Chrono Trigger")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f72e1cd7fad04eaad4e054cac0994f605aa8076e886a9ccca87dc64c1037593. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPJ32172951 — a six-check JSON result.
Chrono Trigger Complete Soundtrack on Piano, Pt. 2
Introduction (From "Pokémon: Diamond and Pearl")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d351f9c71c34d864c695dcbeec8d276046974bbeac129b5de6b211323afe37c. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPJ32214917 — a six-check JSON result.
Kokiri Forest (From "The Legend of Zelda: Ocarina of Time")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f81d2b732c7155a2acd234262fbde0a349319e0dcf35362fd6598f444d44a4a. Chain 2 (Bitcoin): anchored in block 957535 (2026-07-11T07:11:01Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPJ32214919 — a six-check JSON result.
Four Brave Champions (From "Castle Crashers")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5fc1964f0b8a1b7a670c3246d45243d7f9ebe99ab47f9ee076b0384a6d84631. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/QZPJ32214924 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaee64a8b43d002f50d0715e835e9c01d9138c6d9154600b237431400ea05cfa5. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPJ32214925 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfba3c887e2aad6faea94ad98919d1a58450203799a23bac0e4f8b0ef7d5271f9. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPJ32329370 — a six-check JSON result.
Ballad of the Windfish (From "The Legend of Zelda: Link's Awakening")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7497624233cb618f09a900ae4c98b04fe52bb821063d1d692c2d4eadf86f4cf0. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPJ32350693 — a six-check JSON result.
Ordon Village (From "The Legend of Zelda: Twilight Princess")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a191dd5c5f13f9138500ac064864f35d559466ed32f638033c1e5fb69068973. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/QZPJ32350700 — a six-check JSON result.
Fi's Gratitude (From "The Legend of Zelda: Skyward Sword")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29b0e2182c909f5bcb50ce563be1b47f9fcb6afaf6b2f54b9601c11d7e27619a. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPJ32350704 — a six-check JSON result.
Skyloft (From "The Legend of Zelda: Skyward Sword")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c3647e4efedc0f6a06ea94d62a13754561693dc4f8c0bdd1b7c825bfa7f041f. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QZPJ32350705 — a six-check JSON result.
Island in the Sky (From "The Legend of Zelda: Skyward Sword")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac375a15394b90ef0e0307e04a51a5d9dc15fd4dba18927a24f6385177e12518. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPJ32350706 — a six-check JSON result.
Reminisce -Enduring Thoughts- (From "Chrono Cross")
Melancholy and Reminiscence (From "Octopath Traveler")
Heart's Lament / The Brightlands (From "Octopath Traveler II")
Great Cotte Falls (From "Xenoblade Chronicles 3")
Rondo Across Countless Kalpas (From "Honkai: Star Rail")
Final Fantasy IV Complete Soundtrack on Piano
Zelda II: The Adventure of Link Piano Soundtrack
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84c1130b59e6d2e2168063c287022093424e9064bc32fc6f54b641304b6fff41. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUGBT2482203 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f9ef69287ed67f132570ede4c9934a2d948f23edc9e414b1e5446e8e2053e42. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/AUGBT2482200 — a six-check JSON result.
Final Fantasy I, II, & III Piano Collections
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2f84eeba21ef1c77aa13abf39881552db458b6f6e94a4ca00a65cb84234714f. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T16:15:11Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPJ32444052 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aac9590ce7d0b5bf764409f0e6555a921a69d6a314d47bec756eca24d5710db. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPJ32444055 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a317b2109c7a9998ddd95f37e720f5e8ced737098ba95faa55c101d2fc04f71. 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/QZPJ32444057 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cdd4d2bd8600f0ec9678417df3306f002ac1200c8efe3c6adf7172f8666d62a. Chain 2 (Bitcoin): anchored in block 958863 (2026-07-20T10:27:46Z), 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/QZPJ32444065 — a six-check JSON result.
Video Game Music Piano Collections, Vol. 4
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1d52ebcc5e1482941d384eb321d4388bdae142f08a066df24eb01a905a91235. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZPJ32477709 — a six-check JSON result.
Ovate of Time (From "Sea of Stars: Throes of the Watchmaker")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde7c9681f556bbf1593c2262f05bf09bc7ab99a85d06b561a84d965a8f35dff4. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPJ32479202 — a six-check JSON result.
The Xenoblade Chronicles Piano Collection
Soliloquy (From "Octopath Traveler II") - Piano
A Traveler's Respite - Piano Tribute to the Octopath Series
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5903839206acdbaa6ab6647ac92406acb6cac59cd87e4a649b989b99f6c4ff75. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPJ32380168 — a six-check JSON result.
Astral Observatory (From "The Legend of Zelda: Majora's Mask") - Lofi Piano Remix
Lofi 64: Lofi Video Game Remixes Vol. III
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50ab923de63edfabc635f818141e0e267dfc69a0f361e802c0ffad3af72a10b5. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPJ32291543 — a six-check JSON result.
Peaceful Days (From "Chrono Trigger") - Lofi Hip Hop Remix
Peaceful Days (From "Chrono Trigger") [Lofi Hip Hop Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92c9dd4da3f63e236316438566cbca9540c6b2a8b0f209dd9c42d2aacac06fce. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPJ32254316 — a six-check JSON result.
Manoria Cathedral (From "Chrono Trigger") - Lofi Hip Hop Remix
Manoria Cathedral (From "Chrono Trigger") [Lofi Hip Hop Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8f2340195d010c8b547ff6a76c0edb040b489be44d77ebd6225868ae393d821. 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/QZPJ32254314 — a six-check JSON result.
Mario and Peach's Theme (From "Paper Mario") - Lofi Hip Hop Remix
Shiver City Ransom: Lofi Tribute to Paper Mario
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a19e19eb74d4407138f7d546156a9b92ffe104a21ab610e21000e7e5e570e7a. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPJ32443126 — a six-check JSON result.
Mario and Peach's Theme (From "Paper Mario") - Relaxing Piano Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x319c79c8ce76fab89794630fdcf9106691add6e880a063054763b00c162db3c4. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/QZPJ32443130 — a six-check JSON result.