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 0x4a8167f1c729e85f5d8d6135e0ef7985bf285b2b0dd461ed4b1e8ce51a7cf43d. 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/86118e14-231a-47f5-822a-44bc5a0ff33a.json and https://artists.proofprofile.net/proofs/artist/86118e14-231a-47f5-822a-44bc5a0ff33a.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 0x76f60282c31226e108b6b8ec84f678aef308bbf6dadedafd952a4da31f4ded96. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/TCJPL2088040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6adce1ce1b4187df12e4dd500015d47368dbff8f6717095f9d4e5cf86b90a765. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/TCJPL2088047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a7bec91d6082f386a4c7f19d7a94b00b4ff47481bd4c534a1b5be6dc16bd252. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/TCJPL2088050.
ねむれないクリスマス (feat. ジョビルボ松本)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5408e93b58ec4f492bb7826d00c32243ba8d1df677f856ce09af4e704307008a. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-16T21:48:38Z), 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/TCJPL2088051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3568a543096fef29624bbff47efed513fdd1c6f34b970019169d4ab909b40d66. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T05:02:52Z), 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/TCJPL2088052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc077255f39098009ff26a4b8c418c4bf9265c5252c8d3e0b613015e391c0f7e0. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/TCJPN2038783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec51061a20f95183894659f99acd4a1a5ae6d69ba55f890a50eaf90cfd98da6e. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/TCJPO2191236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dde53d38010a8722afa979db15af5acef9baf58f8af37b01f620214549d994d. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/TCJPO2191242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa771d446e8fefe04c415c62cdb5192393ef71b59a08ed8fe3a9bc432271e3ac. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/TCJPO2191250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32b66b67f3b70003fde1017430f8975f76f3c690be0d7808dec12ce8129fcc52. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/TCJPO2191260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d06c22d73ede4604a3e0ec95ef55ed422dcf8e61c152dfe90bb6f343874ffcb. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/TCJPO2191272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23a7806266c4c2fdf5b7f82b52650324635cc7a0f19396ad5ead160b54bddfeb. 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/TCJPO2191285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e1a0a72d97a062bb2b15826fd744419436f156b903a8f1d489604b584418b0b. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/TCJPO2191322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x077ffe5eed87a5dd081d166eba1a17775762795c0fdc7365817af9893304f860. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/TCJPQ2112808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a3f1e30d944d0cd546476511a1576c806cdee2f8fb434d866749a588facbf13. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/TCJPQ2280678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x688a80f60898154a4e42651a61aa5d3398422f8a17c3a66098a2edb12822165e. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/TCJPR2227255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3cbb2edd829aee8cce370b2200751a13b2572a6091cc9d2d4be1786b4f6ecd6. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T07:27:32Z), 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/TCJPR2294301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15fd997447fd7e14e3f0ff22e75e4f712c147cad7fbeef548c27cc5f05a787b1. 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/TCJPR2294304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b709c0ac31f01daea8ea5c2be726a72984418131bd0e1be0bf445bd6d304d50. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/TCJPR2294305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7ac4164f56a8a1be80252ded27378b470871a9eb8ff80a81c4e447cfa385eb9. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/TCJPR2294306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x296d4d3b1aa3665820e72ca128c44d9ef992fe24098bd625035cf9417ce24fd8. 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/TCJPR2294307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x613942dd4e32dd334b3414b221c5b2311a5759b8402514231de6f4cf65691666. 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/TCJPR2294308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6c91b8dadfc82f7213745fa0c9bafb59fb5bc25a086b6b56fc0e1ecab8e83f2. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCJPR2294314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf461f29e3ad7c8258587deb71137fc9ee152442491d00e5fdbcf97fae058f880. 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/TCJPW2381427.
刀ピークリスマスのテーマソング2020
刀ピークリスマスのテーマソング2022
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7e80a6f1187cd09bea0a0f0b0bbdd7717a43a4c55d77b1d14d5de7b99e4aa54. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/TCJPA2469103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb36a402821a03a8a7730292a8a801b8733f9d531813a5ec6b89a6f69274606a8. 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/TCJPS2253342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5dd44fb30b135821b77d3f0d265b5e112ac88bfad67ee6cf4882c970ffbbdf2. 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/JPWP02200871.