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 0xecbab3f6c8cf727ce07395340eed9a6075d2b08ae1347165f0b3511c8dcdab08. 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/9a37f236-5d15-4968-92e4-99b993396ea6.json and https://artists.proofprofile.net/proofs/artist/9a37f236-5d15-4968-92e4-99b993396ea6.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
ハイパープロジェクション演劇「ハイキュー!!」オリジナルサウンドトラック
ハイパープロジェクション演劇「ハイキュー!!」"勝者と敗者"オリジナルサウンドトラック
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 0xae9415d3843a1d49798e9d4239365fd38ed73a8d4a3498dcfe6dd32f4acbf2c5. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T05:43:55Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPV951800081 — a six-check JSON result.
ハイパープロジェクション演劇「ハイキュー!!」"烏野、復活!"オリジナルサウンドトラック
ハイパープロジェクション演劇「ハイキュー!!」"進化の夏"オリジナルサウンドトラック
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b71e58572329d65b2d175b3df1a24ede86471bf2e3eee78d7fd33ba8a022eee. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/JPV951800046 — a six-check JSON result.
ハイパープロジェクション演劇「ハイキュー!!」"はじまりの巨人"オリジナルサウンドトラック
ハイパープロジェクション演劇「ハイキュー!!」"最強の場所(チーム)"オリジナルサウンドトラック
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64e84869b38a4d5071f166dcdd77558b186f31f96c6bf6eda2fb87b02e531432. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPV951800265 — a six-check JSON result.
ハイパープロジェクション演劇「ハイキュー!!」”最強の場所(チーム)” [THE LIVE MIX]
ハイパープロジェクション演劇「ハイキュー!!」”東京の陣”オリジナルサウンドトラック
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac0d26693d42d7acfe0983d8c5529c2597772144aef6c445ad5dcba7cdb173bf. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPV951800368 — a six-check JSON result.
「僕のヒーローアカデミア」The “Ultra” Stage ORIGINAL SOUNDTRACK
ハイパープロジェクション演劇「ハイキュー!!」“飛翔”オリジナルサウンドトラック
ハイパープロジェクション演劇「ハイキュー‼」〝ゴミ捨て場の決戦″／〝最強の挑戦者(チャレンジャー)″オリジナルサウンドトラック
ハイパープロジェクション演劇「ハイキュー!!」”頂の景色･2”オリジナルサウンドトラック
「僕のヒーローアカデミア」The “Ultra” Stage 本物の英雄（ヒーロー） ORIGINAL SOUNDTRACK
ムビ×ステ『漆黒天』サウンドトラック
TRUMP series Original Sound Track Vol.01 『TRUMP』 (SoundTrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cd6551bbaff90be3957c3d4e039ef91c7a1ffb3cbcaf54c56b96a080a96deab. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/JPW462415305 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc713dfb122bb111b2d47e2b90749f5b3a64df28beff3cd7a785a07f8b719225. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T04:30:07Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPW462415315 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48905f89b1832ff5174ddcd8b016fd6b2645d0711e945a4e3971341c0b530151. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/JPW462415323 — a six-check JSON result.
TRUMP series Original Sound Track Vol.02 『グランギニョル』 (SoundTrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x741634dd3868a86b0ef8cba0c1a8458717777e41472c0cafb7df9fc58054b307. 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/JPW462418711 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabf99dbfd992217406446b69bab81291b0e4dcd36329f212060fa6dd37b92c03. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T05:56:21Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPW462418718 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd18a669d0c9dbdfbd071c5ecf9779c24bd15d5d2a5de36817dbc46d7bd6c4e6. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T05:30:12Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPW462418726 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64e27abef119461360a75867a39e392dae24e24d93a1ddf1471fe80220d9d885. 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/JPW462418734 — a six-check JSON result.
TRUMPシリーズTVアニメ『デリコズ・ナーサリー』Original Soundtrack
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec31a3815b28d9f29533ef53a9533965e6b2b47cd75751dc63d163541d8a7ceb. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPE302401198 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6e2fe3669ed5808b9d9b8e73d0c120e64f9d394277c2b8f8511602db5a1f9e9. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/JPE302401249 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8678b068fd857efc9e3b2d6edea617289c49b3ac2fcc02bce152411c198fa79d. 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/JPE302401225 — a six-check JSON result.