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 0x92b95c1af1773f1574bd39894ffb405184e8a632e3fd0c019b3a5341619bf255. 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/0a537ff5-64c6-4669-bff6-6840ed76e09a.json and https://artists.proofprofile.net/proofs/artist/0a537ff5-64c6-4669-bff6-6840ed76e09a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Boy and the Heron: Spinning Globe - Ending Song (Piano Version)
Gurenge 紅蓮華 (From Demon Slayer - Kimetsu no Yaiba) [Piano Version]
My Neighbor Totoro: Path of the Wind (Piano Version)
Kizuna No Kiseki 絆ノ奇跡 (from "Demon Slayer - Kimetsu no Yaiba") - Piano Version
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 0x4d24741ca31fb4a3fba6a03b21b17198af47a73cf12d37d0d5e21d2c673fbf62. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/DEE862400466.
Idolアイド ル (From "Oshi no Ko") [Piano Version]
Idolアイド ル (From "Oshi no Ko") - Piano Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x638053bfbba6c329d1b7a0ecadba73108a61c26615e52726c94f4e382c01f83d. 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/DEE862400468.
Sparkle - Movie Version (From "Your name - Kimi No Nawa 君の名は。") [Piano Version]
Sparkle - Movie Version (From "Your name - Kimi No Nawa 君の名は。") - Piano Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaff8854ce4313c6c08b953ff812fc3c0ee5dd015097a1c0095dbe38f181818d4. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/DEE862400471.
Spirited Away: One Summer's Day (Piano Version)
Spirited Away: One Summer's Day - Piano Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5f44c80b565ec8ccbc521b0a045e74f2bdfb361ef08accd38e822bd9c6ffc87. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/DEE862400473.
Princess Mononoke Theme Song (Violin & Piano Version)
Princess Mononoke Theme Song - Violin & Piano Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x902b221e88493e5024422e5d55e89f4054e60996416f533f6985a532fd92a577. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEE862400993.
Cyberpunk Edgerunners: Let You Down (Piano Version)
Howl's Moving Castle: Merry-Go-Round of Life (Piano Version)
A Cruel Angel's Thesis (From Neon Genesis Evangelion) [Piano Version]
A Cruel Angel's Thesis (From Neon Genesis Evangelion) - Piano Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59c80e2e47743cb52db84ff17668016075c8ba8736065d6e4b32e0ad1063fa5a. 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/DEE862400481.
My Neighbor Totoro Ending Theme Song (Piano Version)
Jojo's Bizarre Adventure: Il vento d'oro - Golden Wind (Piano Version)
Your Lie in April Theme Song (Piano Version)
Fullmetal Alchemist Brotherhood: Again (Piano Version)
Fullmetal Alchemist Brotherhood: Again - Piano Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca7ea290316f255c184ee16ec9fba84b87cffa99e4cf08cae57cefc193106f34. 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/DEE862401000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ccf6745b8dba02b0f7c8a304a0006266ccb20b1ad23f508c943b8de11f65f05. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/DEE862401002.
Princess Mononoke Theme Song (Piano Version)
Princess Mononoke Theme Song - Piano Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b6500dbce78cbc44e180056889397d3912d89ad5677c9e724f2d4959618e902. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/DEE862400475.
Attack on Titan Season 2: Shinzo Wo Sasageyo! (Piano Version)
Guilty Crown: My Dearest (Piano Version)
Guilty Crown: My Dearest - Piano Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f57f943f1c5e221c1792e6099ddb38afb572851222d18f3a70640fefa97d754. 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/DEE862401018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69320627200fa30f087944fbd44d6f24f153a06dab5070b0227c6a3683741369. 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/DEE862401025.
Hunter x Hunter: Departure! (Piano Version)
Hunter x Hunter: Departure! - Piano Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74a082e3586ac7b99a6d856bfaad636ec6bd1a18697b7e05c6742c364f06d762. 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/DEE862401027.
Spy x Family Part 2 Ending Theme (Piano Version)
Spy x Family Part 2 Ending Theme - Piano Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x385d48b88075b6af7205d954d981243caf187d31fe8636deec09ee57b426e5ea. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/DEE862401029.
No Game No Life: This Game (Piano Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47bc79d6554a374998137acee61092d60d974b0982997283c2798a5e818d8b8b. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/DEE862401033.
Jujutsu Kaisen: SPECIALZ (Piano Version)