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 0x2f5ff5b188b285ff037e050b4392b310b48035574992e30d96c9512115ad9df4. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ded47a8e-7ce3-40b4-860d-9e77aab6b873.json and https://artists.proofprofile.net/proofs/artist/ded47a8e-7ce3-40b4-860d-9e77aab6b873.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
TVアニメ「【推しの子】」キャラクターソングCD (Vol.1)
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 0x571ac486cf203b37027c873d503d2d108d9d957edb939bb87d186d977c0e7f5f. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/JPD732300590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27407b142764eca0abbd33e1b12edaa6ca8b29014e29c0b54d7930b267615025. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/JPD732300597.
HEART's♡KISS - アイ Solo Ver. instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x614a01bfd5271a6e774c3ba3b22bccec088f143b785009793a4d3ac595ea83d4. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/JPD732300604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cec8eb7c7cfb44e93750ff8c388e1a4c651866fe9fe9335c8febbb1e13ce5ff. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/JPD732300601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e175871804c12e7066ad52228a958cd3aea1416c9cb26b25833b7f5f6f60de9. 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/JPD732300602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3bdba6f40c58cde25a35143f4fc1f7c36c6ab977b48396b4db8bff224a3a9d1. 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/JPD732300603.
TVアニメ「【推しの子】」キャラクターソングCD (Vol.2)
STAR☆T☆RAIN - New Arrange Ver. instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1faf55de61310b786afd9c98643251e08eac4f7f4b662c5a29679b433c865062. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/JPD732300591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda55b570aec0f0daa845d11deaba210408745b5fdee0708490c3d35fd8b65277. 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/JPD732300598.
HEART's♡KISS - New Arrange Ver. instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92e3ba333d66477772a7a0cafc4fe23b97db31ce7121e4362fbf9a7a2c4bec7d. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/JPD732300605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42a18def71081c0790087f184cc7a69dc4486a7bf1d93dd39642e54bd7ffb343. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/JPD732401298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x707d6fad3d4bbd68fb2213319ebc045de4c16284471875dd7a91b60dfb7f2012. 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/JPD732401299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12a681a7fd88e10650983092b1c35f296a332f8b7501f2d4075460ba5615b034. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/JPD732401300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20cc1f9d72412f095e7e95d23ff76858b9549724330d418c4a10e5ddf9359bb9. 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/JPD732401301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34d1c5e6ad91caf70c2d42b43c9e1cf4c5f07b5470d5d65036058e3262626760. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/JPD732401302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee9cfe4ca80c3a45d40b93a6749d44f60cc325acc448249a10d8704336ba0e4e. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/JPD732401303.
TVアニメ「【推しの子】」キャラクターソングCD (Vol.4)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf76ba256b8b7455488eaeea5580a6dcacad910d10485932ff58cc8e6c15a49d7. 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/JPD732400985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43d071dcaec7d9e53e3b32fd28197347b8032a5b7c9e22c7cf28940f4d5a02f4. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/JPD732400986.
TVアニメ「【推しの子】」キャラクターソング「サインはB -盆踊りVer.-」
SONG FROM TV SERIES "【OSHI NO KO】 " Sign is B -Bon Odori Ver.-
SONG FROM TV SERIES ”【OSHI NO KO】 ” (Vol.2.5)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa028d6a606ee01fed237d67523e3eb4c836de4c68f131645b3070e5c531748e9. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPD732300587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5afb30639f977ae56f0137891faa5ca4ab9496a53a9ccc45399ed7d458424898. 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/JPD732300588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ad1237c0af8c7a82e799185f58cc39e99881dac0765a10fd3eb0d78030c947f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPD732300595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96e0468a17e4775077d520ff96025a48abaa48648e67cb5a9402debc67e2bfd2. 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/JPD732300594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd86f6a4185d5e42c3b2dbf15b90ce40ddfa4132e79a6c09f8f6a8cd4323d9e5. 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/JPD732300589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48686df05986a96b1defa6efb9a46670fa7ae45f4e8c251d17036209a91abdc5. 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/JPD732300596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e175871804c12e7066ad52228a958cd3aea1416c9cb26b25833b7f5f6f60de9. 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/JPD732300602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cec8eb7c7cfb44e93750ff8c388e1a4c651866fe9fe9335c8febbb1e13ce5ff. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPD732300601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3bdba6f40c58cde25a35143f4fc1f7c36c6ab977b48396b4db8bff224a3a9d1. 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/JPD732300603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf477a6eab19a49a6b69f9a7e20f91f46f975de2302d18542c8af86c44c2ef375. 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/JPD732300586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd265e976c853db615319c3c110f11bdf39cf64f6549f31c5aabdbdcbe15b5167. 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/JPD732300593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fe695f7dc0b119b8606754b20bc0e46af3443e166a429867e81b70ea2357bcb. 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/JPD732300600.
STAR☆T☆RAIN - NEW ARRANGE VER. instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1faf55de61310b786afd9c98643251e08eac4f7f4b662c5a29679b433c865062. 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/JPD732300591.
SIGN IS B - NEW ARRANGE SOLO VER. instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda55b570aec0f0daa845d11deaba210408745b5fdee0708490c3d35fd8b65277. 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/JPD732300598.
HEART's♡KISS - NEW ARRANGE VER. instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92e3ba333d66477772a7a0cafc4fe23b97db31ce7121e4362fbf9a7a2c4bec7d. 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/JPD732300605.