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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf64f3400776fa7c848b149f2a2fc869a3380ee8e25c26adb6d8573936d263d65. 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/cf27dabf-1a77-4a11-819d-9d6de47b144f.json and https://artists.proofprofile.net/proofs/artist/cf27dabf-1a77-4a11-819d-9d6de47b144f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
ドヴォルザーク：交響曲第8番ト長調作品88より 第1楽章
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x860a36caf23ab469f1a5d55e91d0935a7d7cb1730d84576d9193c56ab0fe5501. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPES00801921.
ラヴェル：「マ・メール・ロワ」より 第4曲「美女と野獣の対話」
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf85a9c446be36192dcb570555b9c0c5309d230fb570826985a28a2c88fe725be. 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/JPES00801922.
シベリウス：交響曲第2番ニ長調作品43より 第4楽章
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f9108e6679653c6b82a437c5dc353c2ecdb2be2221ca2c1027739d0fef38c55. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/JPES00801923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf14d14be6c39d47367dd7352ea188976988af723b1bf3cd2ff2dc14f7fed8060. 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/JPES00801925.
ニールセン：交響曲第4番「不滅」より 第4部
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d27a2b2781eb4869471f13ed44cc52458fd40ea2c24e95459ef9809fa0926eb. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/JPES00801927.
ショパン：夜想曲第8番変ニ長調作品27-2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb2ab56d3b317e098ad3a608b082f34e5464e78622ae12e3bfe7b43efce6e5b4. 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/JPES00801928.
J.S.バッハ：平均律クラヴィーア曲集より 第2巻第1曲BWV870より 前奏曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8554eb8f211e2524860873e8476e012b39b25798b672188fe2132d9ed528565. 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/JPES00801930.
モーツァルト：ピアノ・ソナタ第11番K.331「トルコ行進曲付き」より 第3楽章
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ff2acab3e35011c0b600924a92c5267f2191549dcebffaa4ce6326153c251bd. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPES00801932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c6a64ddc3c9c4d8e0b109c62fb1d172a3812601e966f7dec8eec4f1856989e6. 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/JPES00801934.
モーツァルト：ピアノ・ソナタ第8番イ短調K.310より 第1楽章
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71ffb928d5060936e239c24de8c17d313163ba718988f8c6b67cf0ebd67899c1. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/JPES00801935.
モーツァルト：オーボエ協奏曲K.314より 第1楽章ピアノ伴奏版
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc540260b843ed80db44ed9d331aff7450be3570f4b88230745134d5426bd7032. 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/JPES00801936.
モーツァルト：「アイネ・クライネ・ナハト・ムジーク」ト長調K.525
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50b693a21d6330baa1dd57bb020150a7748b385c4724394c374182d221927e1d. 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/JPES00801938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9f8c46048cf8c692771f5a50c0c2cd92c2cac2f27119d0d524e7addbb51d66d. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPES00801939.
J.S.バッハ：平均律クラヴィーア曲集より 第2巻第14曲BWV883
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0114fe0c2098f43e63ab1b2c993cb0d63aa43efc7a77633fcedf7800d1267074. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/JPES00801929.
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
プーランク：ピアノとオーボエとバソンのための三重奏曲より 第1楽章
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf846341c8b8657e91acddd18beef92593503637564e7e82ecdc383723c59b729. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/JPES00801931.
リスト：「2つの伝説」より 「波の上を歩くパオラの聖フランチェスコ」
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x716c37b05e088107ba497f3941c7ccd18a5795aef8a9a24c604572fc97e6d057. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/JPES00801933.
ジョリヴェ：バソン協奏曲より 第1楽章ピアノ伴奏版
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4b5f2819719082e80a9bed99e22b295e948660014f6205748a3d8c913a0f9d3. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/JPES00801937.
賛美歌：第二編219番「さやかに星はきらめき」
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee27cebaaf103b4175d62e9bf69177cc6abcdf93a375639799c3878687ac6566. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/JPES00801940.
ベートーヴェン：交響曲第7番イ長調作品92より 第1楽章
珠玉のインスト・クラシック ベストヒット35曲！〜Epic35〜
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50ecbc5889f92412474f9806a2160e8cc3cce2cfb78fc9041f29337b7dad1584. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPES00902881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60f653ffb76af20eff75bbf2801c8aaf89f9e812ba5fac80bfe8d74211a55f91. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/JPES00801924.
マーラー：交響曲第5番嬰ハ短調 より 第4楽章
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x597725c6486a81a13d929251db574d18d92a253b84755645bccc53e85bbca1eb. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/JPES00902908.
ロッシーニ：「ウィリアム・テル」序曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x987927072863504271503f5208ad4aa6fa7185657f3e86a164e248e9a9917898. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:50:37Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPES00801926.