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 0xb93fabd1b7b510eff9340de78d2982dd4719e328385f4d807b16f246eb265406. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/38dfde51-20b8-4f18-8a47-83f3bf6bc5d7.json and https://artists.proofprofile.net/proofs/artist/38dfde51-20b8-4f18-8a47-83f3bf6bc5d7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Goro Majima Karaoke hit song collection(Ryu ga gotoku7 hikari to yami no yukue)
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 0x573b38b20e80729fb20dbdf681b9a52a92627858b5cd7f018b7ec4f098d163f5. 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/JPR501929942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf378db79ecc73ffa367996c88c658ac620ca5f87822e957002623fe1859aea6d. 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/JPR501929943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bb110a784e6b07785fab806b0fb8816f90e9903e963420a9d5c9759c923dbd6. 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/JPR501929944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7a61da4d85938b38303d23a7a783a42a58467055154ba4abf78ec77fac587f1. 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/JPR501929945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a6345b4831747dcc88b13fc225908d29b7e4876e5c7297ff031fc3347d43dd3. 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/JPR501929946.
Majima Construction's song - Full Spec Edition
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a482fc2c0e5b3429a7d9beffe1af9766292b4f23d660bb51ae976ff4613062f. 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/JPR501929947.
龍が如く 維新! オリジナルサウンドトラック (Vol.2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e66bfc5bc02ee4390b91f11ba83f238124b9138e4687cc441117e292dff4dc0. 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/JPR501408346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc67c9428c23465b3671ca734ee84d925e15c52cf42b370899354c9f2bda4029a. 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/JPR501408349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x828401a72ac480ca4c2b286bd9a0f0b499b8e657e4f25e779be92c297e2b7b90. 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/JPR501408351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fc94a0320e4076fd5690993c444ceafab2734687575efd4ec7889a76211d9f8. 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/JPR501408352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc84c8c50c947c11c6e55b4e3a8ced6a8848a09c063eb736b0434b6cbb848ca2f. 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/JPR501408353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4299332c8d96eb0154c9261350fdef98cfbe121fde879fce2657a6d901066037. 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/JPR501408355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8057b123c8673e4600d74cb755eff67e50f824520875d8e9dda4b62ae5851cb2. 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/JPR501408356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf04b4d18b581afb7be14e679756fd996d1d06f359f2d009034fe249bef24b553. 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/JPR501408357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bd464c7bd226bc700773be34d443509e5c864dee49f237d26187405e357582f. 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/JPR501408359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf2a9d3248b5df39dd828ac5d117212661524e876b6f35314bfb38f15d9775c6. 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/JPR501408361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2422c4ab8bc4ebd01638ce7af2c8cf8bcaeb7dd64b76c8962873fb71b6ccb73. 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/JPR501408362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28dbe01550fee6d6e506c496f9e46d6b27d81b73e66f1ef925a928c6fa15ab47. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/JPR501408367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x479b02018c69227ef6de7f9664c411dde69130b10d45b08cf80e130efdf06ef8. 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/JPR501408368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbae74fb25dac2a7bc861830e4abc47cb0526afa83193f2b174492470ba1af62. 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/JPR501408369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa23aa15e1bdd5d252283377a67edf25c4d9320405eba18510a4d9f317f885a57. 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/JPR501408370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf1ad96921b5d0d5575458a57265338cd55d5ee8e0f3170b512c123e6a401929. 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/JPR501408371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54da2fc5ddb040dd542c4a834200bb8e86995092944b4636b2f8de9bb8bf5037. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/JPR501408374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x961e30cc847f693cba8cdf965e4b434490bbb84fe19ae27de89eef1067a66670. 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/JPR501408375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb97cb6e2a6e7bac26bc0ac7d58ec090cc4a718e7cd332158af8b8a529a248661. 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/JPR501408376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa361c6cf081926b9b6cc0958fc60f7e7cc9d359c2a96abf41ed71fac75964666. 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/JPR501408377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59b41581f3bb1b2c7af6d5d6674079d59fe59e0e195950edc02e78894413b37f. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/JPR501408378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80e3df2f0a8bd0eb7eaaca4ff8c07284fba7500b7a337fec5b77d3d25182e109. 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/JPR501408380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7fb284f149108e6288f2d54c489fb01b1b65348d2b4514dd7f3fe734a94b4fa. 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/JPR501408381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11415ac18e0842755966c495148d22fa2dad73ae31590b308fdfdd238a61c34d. 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/JPR501408382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x737041c9ca3e7f86b2f990d2b92741117b0eb8e50672e936d8d0bf37d6c8e6d7. 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/JPR501408383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0142823bd32291eda9748d78ac50d45ca8a110ba98e8594e246e1a8fe44957cf. 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/JPR501408384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3791d2306a79780e817740bfd1a2d27c4f88d75fa4b7e4cd2e0d15331b6f897e. 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/JPR501408385.
Like a Dragon: Ishin! Complete Karaoke Songs
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc39bb2b348b25dfb7e5ae75fc56588dd149fafde49805ed47295c1ddc25d1c45. 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/JPR502207525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1628e999c16e2a82e0a864628db236372f457a687ef68945d68e929b925e09ee. 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/JPR502207526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a84582d44aaef528e86132d45d7bde0965d6d584f973952a140bc8b3cf2f6c5. 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/JPR502207527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a63ace175011b4e0982e15d2559c9f3626f371b0c41d4f8821a620b2d570359. 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/JPR502207528.
Kokyou ni Nishiki o Kazaru Beshi - Full Spec Edition
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02ffa3725f2039e62dac334361ac59b1a1c0936f91405e968b0bd474d2220d4e. 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/JPR502207529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bd750f41f5f3cf9dec1facfeec16a99cc5bc0d070c59cb4eb9180bf862e7cb8. 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/JPR502207530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9740e1082ae9a7c5971e93bc591f28aa06ce5395ff42e0adb92b6da974f62ec. 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/JPR502207531.