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 0xeb0116642fa5a7605c838e1686d4a08cc1405dd39f07a24787d87f541bb96783. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5ef3b13a-087c-4fe8-8cc2-f696606d85e2.json and https://artists.proofprofile.net/proofs/artist/5ef3b13a-087c-4fe8-8cc2-f696606d85e2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Avant Story(ゲーム『ROBOTICS;NOTES DaSH』OPテーマ)
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 0xe4d953ca514cb4382abe7ee6fdb3ad3c5e72797692eea51ff3ff4b4791c7c0e1. 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/JPK631806701.
小指のパラドックス(Xbox360ゲーム『メモリーズオフ ゆびきりの記憶』OP)
風の旋律(PSPゲーム「メモリーズオフ ゆびきりの記憶」OP)
約束のオーグメント(ゲーム「ROBOTICS;NOTES ELITE」オープニングテーマ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27b324278f4593f2a267a559a9d4c122dcc9a1733047b048019c60711368a94d. 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/JPK631401201.
イナンナの見た夢(PS3ゲーム「うみねこのなく頃に散〜真実と幻想の夜想曲〜」主題歌)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x344186dd0dd39ae9726964e973395a9073ff7248db9a89d600c39ca4a56589a8. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/JPK631200101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee66d8c9688db6ad3877cf2ce14aaae4cbaf5a423cef42032094ecf1a4c758a7. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/JPK631202301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x269680d7e869b21005939fc84fd6fdad2cdb54cd1feae863589b6a8889880618. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/JPK631301004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee66d8c9688db6ad3877cf2ce14aaae4cbaf5a423cef42032094ecf1a4c758a7. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-16T00:38:27Z), 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/JPK631202301.
Xbox 360 専用ソフト『怒首領蜂最大往生』エンディングテーマ「Heading For Tomorrow」
永劫真理のフェルマータ(PS Vita用ゲーム『カデンツァ フェルマータ アコルト:フォルテシモ』オープニングテーマ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27b324278f4593f2a267a559a9d4c122dcc9a1733047b048019c60711368a94d. 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/JPK631401201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcd06f3cce207920689686e13afd470d1cdd7e1f682fbbaca63887af77cbabf1. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/JPK631505301.
LAST GAME(TVアニメ「シュタインズ・ゲート ゼロ」EDテーマ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa73bbf4cd588900f69b064df884c7077d85158b2bf961e399759319cb5270d93. 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/JPK631802701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4d953ca514cb4382abe7ee6fdb3ad3c5e72797692eea51ff3ff4b4791c7c0e1. 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/JPK631806701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa73bbf4cd588900f69b064df884c7077d85158b2bf961e399759319cb5270d93. 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/JPK631802701.
Free Sad Type Beat - "Lonely Way"" | Emotional Piano
TVアニメ『シュタインズ・ゲート ゼロ』オリジナル・サウンドトラック
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe94368db04ab2ab565d8e480c36aa8b1ae9acfc5edb6d468345e9c3d7c0a0c25. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/JPK631802502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcd06f3cce207920689686e13afd470d1cdd7e1f682fbbaca63887af77cbabf1. 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/JPK631505301.
ゲーム「STEINS;GATE 線形拘束のフェノグラム」Original soundtrack
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5939160a75ef4cf8bb407c424834652314d2ef58bd7e5786fb6f48f124e58f4a. 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/JPK631302232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5361bb0145135a3436d32fc48838ae41d585c8322b77dd18575d761524e82c51. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPK631900201.