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 0x112a69d34ef23f4560c3edcab718bc4ab82457ef22d9e220ae86054bd3f326d8. 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/24102e5b-e099-4c96-951e-20085e730e28.json and https://artists.proofprofile.net/proofs/artist/24102e5b-e099-4c96-951e-20085e730e28.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x10eafe224ef8f86d32c8e7f52ecfe96e172f55dd95b8279bfef5b82f090b8cf4. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/JPB609470301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce612b7fd346d1512bccebe06d79200f1d3fc58f2b8936b62fe02f3619eee818. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPB601070101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe7742eb75affd3b4b3802b48e46e24d3813b7fe373bec17b7946f73b8a489e8. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/JPB609570101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31c9b4f98a5afc8167523df67b35cfa8dbfb5b0f84c1694d147886e2a757bf7e. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/JPB609470501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82357662e65c4f979301a0d964fb3a7cc718e85c920cb2a72ba19b2381aa5388. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/JPB609570601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x255bc6969536cacd6a6b85b8410379fccd7cfdce8b1e6b27f8ab2bd9e20a66ae. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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/JPB600444201.
「速報!歌の大辞テン!!」presents POPS DAIJITEN! 昭和 VS 平成
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x436b114a8ef5422d32c6986986890b859fa1e31dcc25e29620fa39ff955b1886. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/JPB600678101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad50cc172b66e8545e840e78400d891ed8f866fe84c6d325d278e47d0c6af1c7. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/JPB609717706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28c7e2eca36d4957fde8f396a9ea77dbee2c166b3ff6cf46b8b57b35bd4f765d. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/JPB600678702.
What’s the Outsiders? (『仮面ライダーアウトサイダーズ』主題歌)
m.c.A・T 30周年記念 「ごきげんだぜっ!」 (featuring ISSA & 屋良朝幸)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa37d7b1894d7ff3dde8363b6a6c1579c914bae2d862d2310076452388485c56f. 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/JPB602403679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f3b1258c888629db021650d96faf1e871c54ab4df920b9e4c049a45d28fd1b1. 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/JPB600331301.
仮面ライダーファイズソングコレクション
仮面ライダーゴースト TVサウンドトラック
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22db3602690dd473cba2c74a38792f4ff0cb93af24f01119b64d571211d0576d. 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/JPB601602852.
仮面ライダーファイズ2ndエンディングテーマ The people with no name
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4261f90c48f0d9cb4ca3105994e75f95e66e722ee7fe89df19c18d5af3a7c7c. 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/JPB600333801.
The people with no name - Rap#1 version Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x948f1cdf99d3d7ce1e50977163a52687063aace4812c4edcd78117d7981c19ff. 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/JPB600333803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45bdfc3af1670dffd17b89bcc3c8c421411edc9a530545977005b052d843e0b1. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/JPB602100370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f3b1258c888629db021650d96faf1e871c54ab4df920b9e4c049a45d28fd1b1. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/JPB600331301.
劇場版 「仮面ライダー響鬼と7人の戦鬼」主題歌 Flashback
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a0193048e8156fc1dfa46d8f3d48b0a04a66995c14bacb55fb80c4e3f483189. 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/JPB600539901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x623902fdaccab5e6f550eb41ea2be6877a800ec74d0c2acf85d890a729d4c966. 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/JPB600539903.