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 0x219960e477ee74889f2c71a9746724791482309a6b691a475b81a1eb976dba7c. Chain 2 (Bitcoin): anchored in block 953817 (2026-06-15T18:10:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ff17c164-6cd6-4920-89a3-59ffe6c80af6.json and https://artists.proofprofile.net/proofs/artist/ff17c164-6cd6-4920-89a3-59ffe6c80af6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
TVアニメ『ドリフェス!R』オリジナルサウンドトラック
TVアニメ『100万の命の上に俺は立っている』オリジナルサウンドトラック「音100」
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 0x35b552140709a608b07e4fff69017f61ee2405a500beb00572d87c38375fb0cd. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/JPI102001695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7ddeeabcd873f656dd8c7f2c6d78214fa56f4af26c0004910b393b2f19f5364. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/JPI102001741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2683f98df18c7de787ffaa42a822c621a1b2fb5cc4efa11b09a27075104e11b7. 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/JPI102001742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcf8ae587a968f28f91b56987422051d85cb81a822606738837dbe2eba21c2c3. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPI102001697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b3c9083399d595d1f07d61f041c14c6b85fc93dcf85a7abc6b98c7c024220a9. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/JPI102001743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86ea3089583be7b74b2399ace5a29747868c448e7eeb5805bd05cb8ea2899b16. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/JPI102001700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1de6f93c839da85af0399ac7463cb0fb7ce1b9162a82aedddec553d676309e96. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/JPI102001702.
そんなの本当の友達じゃないでしょ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dd9bff47dc54956a8517c8863cd3cad156f9755ad49d72fd1861e59dda2b4fe. 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/JPI102001711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23e2b4a14bcb302507a118ee726b37974aa2e40d72b288e36905f2b5e5d94222. 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/JPI102001712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6422e6a34347cf0184ab1fc68a24468d484902ee3d3665c57e7340517c810722. 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/JPI102001716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b9497b9a4de8c556104ac5c4602b64ec8ba973cb74f1b224bc6dd2aa5fbb74a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPI102001721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14af87d08c02744181889ee0337868ffc9476e14630fe94c150e68706ce7d3d2. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/JPI102001726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e706fcff905d530999691939583b4768f9e6b5b1e8dbe70a9446fe8ec695f21. 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/JPI102001727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde8e12b0e16876e837df8f3dedb417c71de0f6c3c4191c3c683187e6504847a7. 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/JPI102001731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x597d80d50f3440b841643eaf43179da8fce370d1bf20f2dd0b4204464f4e9f41. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/JPI102001733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4403a0d768487ad390d8fc022223ed8aa34983d269803767f3192f36791f356f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPI102001734.
TVアニメ『100万の命の上に俺は立っている』第2シーズン オリジナルサウンドトラック「音100の2」
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1953ef6564857a333d7f181b0248afebfdbbb2026df635bd6603fd1bd9a00028. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/JPI102102217.
TVアニメ「金装のヴェルメイユ」オリジナル・サウンドトラック
TVアニメ『外科医エリーゼ』オリジナルサウンドトラック