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 0x64615f98b1f0350af9901a1fdde0436c7d5c5a30cee50ec24f5dea125d0cd95c. 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/2b5a0f3a-7ffa-46a0-bc68-a3bdc0248782.json and https://artists.proofprofile.net/proofs/artist/2b5a0f3a-7ffa-46a0-bc68-a3bdc0248782.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Legend of Zelda: Breath of the Wild (For Piano)
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 0xa5d3b27ad6636fb3e5c0922a60edecbfbe097ec71933379fbda0f4d2e8f2b097. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/USE830933683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6d765377d67eadfa4c02c9c80cc698476f7a2ac95f5ced7b5025ba153a3b03a. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/USE830933684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c3cae6d009c8925775612196acec369f30e0b44aafa29721706d7b83cd84384. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USE830946527.
Vanille's Theme ~ Memories of Happier Days ~ The Road Home (From Final Fantasy XIII)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe115e53fcd369e9c88a62c0ca8b19b950c54670d2ac75f46a1135a704b4fd670. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USE831573059.
Prelude to Final Fantasy XIII Full Version (From Final Fantasy XIII)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd07bb5968171b0e66d615c726e3e3de007ba269c9627c4d7a29631905b3fecc6. 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/USE831573072.
Concert Paraphrase on Dearly Beloved (From "Kingdom Hearts")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c0b3805aed162bb478ff64a51d75c5f56a1b797a2ec11211f25b29c0c229452. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USE831599383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x081fdc86d24a24b82c68385d9eab72ab91e3dbd8efeb560067e37e09124a326d. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T13:01:04Z), 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/USE831599388.
The Legend of Zelda: Breath of the Wild for Piano
The Forgotten City / Tavnazian Safehold (From "Final Fantasy XI")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f069e3619fbebb7e81a8d5e99e414c76336867791170509265a0954f2568ee7. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZ22B1836530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f6190f638c991c2590aa1529011c6624113d6be6cf94e72d75afed45ac4b340. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZ22B1836539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa15604aa1ccf843204189838a202208bed6486554a2b627391a8ae6dc9360f5c. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QZ22B1904575.
The Outlaw Ocean for Piano (Inspired by ‘The Outlaw Ocean’ a book by Ian Urbina)
The Last of Us for Piano (from "The Last of Us")
The Promised Land for Piano (from "Final Fantasy VII Advent Children")
Trip to Kakariko Village - The Legend of Zelda: Breath of the Wild for Piano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x874fb5318c8d59996b0d98945514124e04ed3cd79299d4cc75e1e1a0ae29b315. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/QZPJ32443161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73b7f34c2089d677058ef38e48b4483c90046df9b6246aafd65a31dcf44d7c77. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPJ32443162.
The Legend of Zelda: Ocarina of Time for Piano
Title Screen (from "The Legend of Zelda: Ocarina of Time")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6b75c0019fa50ba6d2e183215ed41fb756e0990ead44810bf1e3f4e05eb2618. Chain 2 (Bitcoin): anchored in block 958828 (2026-07-20T05:21:06Z), 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/QZPJ32446672.
Castle Courtyard (from "The Legend of Zelda: Ocarina of Time")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc63a3dd8e08598eb7f42f3b0dd8c62823a8d45975f63f30db46b1d06c26a16b7. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPJ32446685.
Princess Zelda's Theme (from "The Legend of Zelda: Ocarina of Time")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffbe3fd7a72c4fb6f85fe74b4a553caa927336beb28a694c78186fc16681285c. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/QZPJ32446686.
Lon Lon Ranch (from "The Legend of Zelda: Ocarina of Time")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf50c78ae2b3b22d82e74a5ab64c1d11be2310cf40f68bc9ff3e9b6919775edae. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPJ32446687.
Kakariko Village (from "The Legend of Zelda: Ocarina of Time")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad2fe0390089e9bee08239624a5bdea33ee1f747c8e5d8a3e27645719de6b3f7. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T08:14:15Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPJ32446688.
Ice Cavern (from "The Legend of Zelda: Ocarina of Time")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5f20c5ef14d9c47d79e126918135909797e08269673162bdf1987c4fcc5d321. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZPJ32446705.
Gerudo Valley (from "The Legend of Zelda: Ocarina of Time")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a3086dfc80d9982ba7f823e9dfd63df3bd408a861ec4543660f51c21ca00454. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/QZPJ32446708.
End Credits (Edit) (from "The Legend of Zelda: Ocarina of Time")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f506e959897cb798c466ce180fd610f685f4d9d82da4819dc19f29ed253cbb5. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZPJ32446716.
The Legend of Zelda: Link's Awakening for Piano
Overworld - Main Theme (from "The Legend of Zelda: Link's Awakening")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11e7423b6cf83902f617b536d139a53dc6c436bcaee448e9ceb4aad11a0a8273. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPJ32448295.
Cave (from "The Legend of Zelda: Link's Awakening")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x506b10d64303ed2ee83ba425a05dced464e2c950164550630522036bec65eb78. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/QZPJ32448296.
Dream Shrine (from "The Legend of Zelda: Link's Awakening")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75d0f05a7b94758c0726b72e31bd4c9f755b4b8518640ce994e0dcc30d35ccf0. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPJ32448298.
Tal Tal Mountain Range (from "The Legend of Zelda: Link's Awakening")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cd149a3238d8aaa3664c229f06979ec76227e69d7ce554dd25700752d2fb270. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/QZPJ32448300.
House at the Bay (from "The Legend of Zelda: Link's Awakening")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe860863a2f9cee9ac78b339c14ff80b6764988f01d3e38d4bcf383204f7ea2ae. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/QZPJ32448301.
Final Meeting with the Owl (from "The Legend of Zelda: Link's Awakening")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81ab6739ad971dbdef3b260e53fad4819dd3a0bc4e18feca9cef3f4e0bfa65ad. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPJ32448302.
Ballad of the Windfish (from "The Legend of Zelda: Link's Awakening")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe057d62793c47610fae97cbf7f98e7b18aa52f119c5440f31eb31ff504df68b0. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPJ32448303.
The Legend of Zelda: Tears of the Kingdom for Piano
Lookout Landing I (from "The Legend of Zelda: Tears of the Kingdom")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b58acaaffc7f41cd09cc966f39fe9397271b9c456bdad4720238873b7875913. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPJ32480453.
Lookout Landing III (from "The Legend of Zelda: Tears of the Kingdom")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4c1b8b3e148ec6468840920158a58744bf4181347b0417605539e8dee7a69e8. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPJ32480455.
Regional Phenomena I - The Legend of Zelda: Tears of the Kingdom for Piano
Colgera (from "The Legend of Zelda: Tears of the Kingdom")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60482303709efce4c0a9082bf0b0dd44825cbb245cb3426239623d00421c1e6d. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPJ32496291.
Regional Phenomena II - The Legend of Zelda: Tears of the Kingdom for Piano
Ochette, The Hunter (From "Octopath Traveler II") - Piano
A Traveler's Respite - Piano Tribute to the Octopath Series
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf108d539b41d0f0be0ade102afaad19de5ab74e410b28d0a0d3fbd40834d14c. 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/QZPJ32380160.