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 0x496bcc8b8eed40917f244f9cd4bd5efdae93e7743edd29b19e64c36786a9b882. 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/ae0f8e4b-b9d6-40ae-875e-1d4e003fd5ee.json and https://artists.proofprofile.net/proofs/artist/ae0f8e4b-b9d6-40ae-875e-1d4e003fd5ee.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
『ひろがるスカイ！プリキュア』ボーカルアルバム ～FLY TOGETHER!!!!!～
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 0xe9e32d8d47d58c2aedddf279a1c381bf3549cccc45a8edc451100fb1a20da61e. 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/JPD602300103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x000b8df676afbff4f13dc091ba09ace81742f556c6b2ed0ef88f2f69b7a30bef. 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/JPD602301445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa34fd9d0e864473cfc96e9f4264b4a860d2cae196086664c226d5ef1cff34267. 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/JPD602301447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc716ace2b9adf7ce46bbaaaea18c9eb02268cbc147dccd124f96ba15930c80b. 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/JPD602301451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe562a880cebb81ec204cd57a282b448c67bb860ec1e2b26233f124cfdd7f1f6f. 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/JPD602301452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc269fb11c260dba176d0e3ccef84fabdb39c5543d029d4c9d1cb85229322c9ec. 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/JPD602301453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6f3439beef2c43f939c86304fbd6f8d143f95ede943f4a92a4bb05954bab049. 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/JPD602301454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e06e588fd3702bff985c2436e7c804e8952800afd73a637ab1d9b5c9dee45d3. 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/JPD602300104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c17ae5f15ea4fe9f051ad05bad0c785f6e8cff67f407befbc6c67a08030104a. 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/JPD602301455.
ひろがるスカイ！プリキュア 後期主題歌シングル【通常盤】
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1d93943d7f3cbac303a9b17688d734131b38b8b0e7fe97357a56ad5a4aad4bc. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/JPD602301458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6dcb80d3e0ac24a9d794406f8bc37303a8025713fb4c2cff76539cf04517b71. 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/JPD602301459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x990d2b8a1045d74031edfd795f3bdca18c1f07e52fe44546b824c5a29b6cf73d. 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/JPD602301378.
『ひろがるスカイ！プリキュア』 ボーカルベスト ～KIZUNA◇ダイアモンド～
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3219e038721eb29577461460303349b9432e83f78c351c5ef9363ed21367428. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/JPD602300097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x000b8df676afbff4f13dc091ba09ace81742f556c6b2ed0ef88f2f69b7a30bef. 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/JPD602301445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa34fd9d0e864473cfc96e9f4264b4a860d2cae196086664c226d5ef1cff34267. 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/JPD602301447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc716ace2b9adf7ce46bbaaaea18c9eb02268cbc147dccd124f96ba15930c80b. 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/JPD602301451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73c3bfcd7b544e2cd64029cb8cbb37c108bf8bd9bdd2a4e2b5a0c6d42cec2e33. 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/JPD602301905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd592b3a52055b214708b433f7d7f35055d66b7b32634c58c9fec39962f1a326e. 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/JPD602301906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3fc1a179827cdf4176e2596019109b665a5ba19d09405da8262f0c4b81a990f. 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/JPD602301907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65f93ec1665251d8415ff6ee40dc2263d0ddcd063a3ff60cca2ae31bdae190c1. 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/JPD602301908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c883082b85e43ce02f89e57628f5aff6b8b76faa3c6d07abdd2a6d973637488. 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/JPD602301909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a09100a2c9b570cda3112c18c7f3d9a1dfae6a897f329f1dffa2f4400277d93. 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/JPD602301910.
『ひろがるスカイ！プリキュア』オリジナル・サウンドトラック２ プリキュア・マジェスティック・サウンド!!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53e7674ac420d6fe94ba7a74c1c8803733785a4e8a6258f09f6fffaca88d2bf2. 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/JPD602301962.