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 0x49257d38388f2216c7d444d68b39e13608a596d0f61cfd81f28bcaaaee6e631d. 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/388f05c8-8c8d-4f4f-90c5-e24a9b79242e.json and https://artists.proofprofile.net/proofs/artist/388f05c8-8c8d-4f4f-90c5-e24a9b79242e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
ニュー・サウンズ・イン・ブラス
ニュー・サウンズ・イン・ブラス2001
ニュー・サウンズ・イン・ブラス2002
ニュー・サウンズ・イン・ブラス ２００３
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 0x67c0d99b2b0448f61257ec567ace474f289d70a798c8e168136a0dfcc39131a4. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPTO00300465.
ディズニー・プリンセス・メドレー - 小編成
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd31054297d579fde2af4101a95440987fb2ed8e4ba735e29684a3c26726bdbf5. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPTO00300481.
ニュー・サウンズ・イン・ブラス 2005
ニュー・サウンズ・イン・ブラス 2008
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa109705db75fbb5ee15b98859d923ea58e7aacd34235ee1b8ef218e9a716d466. 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/JPTO00800245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13ca76c5caaa618338ad1244587e061edd81e657eb6302e264a1be28a2535975. 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/JPTO00800247.
ジャパニーズ・グラフィティ XIV ～A・RA・SHI - Beautiful days～
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d790788dce17a5a7c2e37a5f5526d8f90ae8c1bf94ab458a3d4b127c68379af. 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/JPTO00900398.
天地人～オープニングテーマ - ロングヴァージョン
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6178129aa3e5fb1441d5b4a0b46df5415c54c295d3a55881f5f3e5d3e2cfe89. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/JPTO00900401.
岩井直溥 初期作品集 ～アーリー・アレンジメンツ
Sinfonisches Jugendblasorchester Nordschwarzwald
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec63082e2b873d9e079315563ab1a943cd1790d4436ea09e14643285a360ae06. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/DEL212311108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cd6559e7e5eb63f1a2b88f7aa56768e6c800da09916d1750de1e7d9b76b53a1. 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/USFKZ0610432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d80eee82ba09ea41650540c33b6f9fef3e392fea76b739a1499ab0406ef4b50. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/USFKZ0610444.
ニュー・サウンズ・イン・ブラス 岩井直溥アレンジ Vol.2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8ea6f20626a18579c76a42a4ab53bce494876a76d048302d811c47b4d872b1c. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/JPTO08952680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd72e73c32dd1de2bab3750684ac60ff4febc213d7d746f75a4516906522a00a3. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/JPTO09808420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0a99815ff25475ca8aeee4fd80b74a557cd86955f034608d3d9777b487e9432. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPTO08952590.
The Music Man: 76 Trombones (arr. N. Iwai for wind ensemble)
United States Air Force Heritage of America Band
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e2c821eefab89da08da6218375cd2c2e665b61a54a1348665a528bfcf9216eb. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USA5R1399201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c4275f9fdf99fb9797dee57069348bd0a3dbe067f0645230bf80eef38554408. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/JPTO09718620.
メインストリート・エレクトリカル・パレード
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae72c641c5109891b74c3c1cef633b41c880ec9e4952f9be686ca70a4ca600eb. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/JPTO09215720.