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 0x126a8b52e8d2d7d9d75204fc2d8d25235c6fff066ddde6c7045f0dd49d83c41a. Chain 2 (Bitcoin): anchored in block 954705 (2026-06-21T13:42:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f16ee72a-37be-4753-9ac3-7c3687fc46ee.json and https://artists.proofprofile.net/proofs/artist/f16ee72a-37be-4753-9ac3-7c3687fc46ee.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 0x653d8b7d61a05c7eaf5709acab5fa6b863326ce63ff45a96435a63ab49ebb27c. 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/JPI100903443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x610ef22d4a49358e92fc00323d99226bef34ec21d608bbac7159b247e42d4c3b. 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/JPI100903466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38e495bdd8bfa461445e5cc645fc79a6852d3bfebe87b1ef7510865b551bb2bb. Chain 2 (Bitcoin): anchored in block 960183 (2026-07-30T01:10:20Z), 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/JPI100903444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3593b9c2f036be00f85422704c6d9a2028fc00b376078856bf6a9623bf5c16b. 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/JPI100903467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07eb7bb3dfcd31e56bc3060134d1a1a5a4ee25f2bdbe837478fb9e3066a3dae3. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/JPI100903445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb37f5cbde91409f83ec5a309674b6fc404f83296f249c205a03272e76dda40a8. 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/JPI100903468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x773634b839b7f892681cdd8b06000f36902bf2d37efa883eeab5f68e9147ded6. 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/JPI100903446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb3155ce8b5823e856b10c517dd0dbe8db234465b47ff2a3e3233f763c3990f2. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/JPI100903469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1ef388cf8e1a9610d8ba8c40f8c3f9738fa287cee34ba106f0a40170d318f69. 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/JPI100903447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23590a4e8ff7940935c9c5658c8817e14cb3a81712c3ce495003f54788f9ba7e. Chain 2 (Bitcoin): anchored in block 959146 (2026-07-22T15:41:47Z), 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/JPI100903470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e32b89bf90d5446372c3a372e4627afa418ce3971bb1787579ba721e661bb8c. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/JPI100903448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8949f1ce1cc89588d0e60f7ee327b7e0be9efe3cd1d0e3ef5587e4b9ce0954b2. 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/JPI100903471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69d01627c76b90acd029e930298c02852d84573562155db74db9241845a0df55. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/JPI100903449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56d369582571b8f1cae2a02b4fd3f7ed2450b0bdd624633ba2651f7501d1d612. 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/JPI100903472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f01be3970091531274d7e4edcb72032da736ecfc422b0d62089ced4d1ace419. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), 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/JPI100903450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73b43b982dd31790f860164feec2e49c2d2ee2db02b633b9aae1a3880b0cfac1. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/JPI100903451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccdc566d5540265a6138f2a9f369b6217dfd955b3623159ec425b096ea321665. 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/JPI100903452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea716e71a6ae7dc2eaf8df81b83366cddfe6985da34f5458b46e11f6560f009a. 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/JPI100903453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86c132d918acd95a8f586b22b396931b78060dc83376f2027647b73626c610bb. 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/JPI100903454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ac1bc72fa2d3df3e8b83b15cfcf17947d89a942c3ca4214f203f39e9862cbf7. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/JPI100903455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x743f2daa332540a5d9758d914145db813ba78b6a7e999fecc5f4d40588b1b783. 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/JPI100903456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59b3113ebafe270cf38b7483e332c63e4c915b85190af55d6dd1b70c05798f56. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/JPI100903457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67cec01f4b5d6b60156561f135ddf2fce6dde79b3c4dbcedfcf8b3fbf63c2cc0. 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/JPI100903458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b7aef5b0b7ae9e61f3bbea5a2d30096716b63a71df21b4bc1c24fbc73a87258. 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/JPI100903459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a4dea8d78e430078b52e71b2e6881797a7822e54a0939561ded56e0c226b073. 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/JPI100903460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x874966f71b75e90a58f779a1c45e5505d2225bfa6023222a0793f9f3beb7bdf7. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/JPI100903461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4d745c0d65dd61ac94075df155f28329b4ba7a74db4a7bcf65c86c71217ae24. 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/JPI100903462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf00d616251006e0fe4644d0fdb8f93b6081535ce76391300e350d5bfb01066ae. Chain 2 (Bitcoin): anchored in block 960330 (2026-07-31T00:58:21Z), 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/JPI100903463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2c8a1947fa0bd6083fa4629e824608498889b46d052f2b1828bb5b559b675a9. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/JPI100903464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9e31fda057155adb542302ec30718f8b4e5af8728a2b37b6b49197bb9785181. 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/JPI100903465.
「魔法つかいプリキュア！」主題歌【通常盤】OP:Dokkin◇魔法つかいプリキュア！/ED:CURE UP↑RA♡PA☆PA!～ほほえみになる魔法～
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd45abb691a29df8c4d9b4d71ded690644ad9468c92836f77733a7c0bf0b6ad48. 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/JPD601600003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76c800bd358ee6753cdbdff4ac3ab97c00f246b342a25dd68cefe3d06c75626b. 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/JPD601600004.
Dokkin◇魔法つかいプリキュア！ - (オリジナル・カラオケ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa609b6b249c9ef0580bd18a826029b08dcd7c4342c9025d705b9e54fe598e4ad. 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/JPD601600007.
CURE UP↑RA♡PA☆PA！～ほほえみになる魔法～ - (オリジナル・カラオケ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36b6b1247713acc2aabd056de2ebc2e3c409ad07ce1d75eed95f7905a2330bcf. 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/JPD601600008.