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 0x7e7fdd41489a0ac8df2b3ae5f8a6cf63b78f7679da19e438369cb60ba16c63cb. Chain 2 (Bitcoin): anchored in block 954659 (2026-06-21T06:14:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dd2fa56c-6a81-4d6b-ae5e-cf268daf3921.json and https://artists.proofprofile.net/proofs/artist/dd2fa56c-6a81-4d6b-ae5e-cf268daf3921.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Yuki Yuna is a Hero: Hero Chapter Original Soundtrack
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 0x62d147f957e527ecc018378f75ce07a1ebc6c428ad0fbec93ce9fedbcedd4562. 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/JPPC01800479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf18222ddaa6339c03b6b9f9b0cb74dcc82354315658d77d4072faa4b35625227. 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/JPPC01800480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2176cab26d9eb62feee177a10f999a7fb6061b986a4b1afad485f6cf8f0dbd7b. 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/JPPC01800482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x913f513c68c088b5cc9b8b7861f94139cd516dc5d944c979fefcc13fa4145916. 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/JPPC01800483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc65ede19aefc00d6eca9960948ccb12c56735577c20f1fed7ad5b036d8dc52f7. 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/JPPC01800484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3e8a3d1f58c6371096567a504788f6526a83092ce6c4afea43c3514804bc20a. 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/JPPC01800485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa382233c7d677e6421953bdd2d8e3eef45ea955769598dd037b9f45cf7ca0043. 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/JPPC01800486.
Yukiyuna ha Yusha de Aru Best Album "Yuuki no Uta"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcd7a1132a7fe4f1cdcba2e6ed2a33bbe1c7f5f0a6c098b3b1ecabef239ad784. 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/JPPC01402542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc95a742a301c7abd984da186e6f2b01195399d130804ed9bec0a61a059203304. 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/JPPC01701251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb232f25546f9f5a4433cf5267fafe6e6177d89b75b108f87523f9cf7d5d27a11. 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/JPPC01701264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3e8a3d1f58c6371096567a504788f6526a83092ce6c4afea43c3514804bc20a. 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/JPPC01800485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e73edd67495032ce33bda1b0f99eb5c88730e52e31f923ffec7fb44e3c7bf21. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:28:55Z), 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/JPPC01402528.
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 0xeef95d33126e7c18de02f8b11f4fc6e8e496c4165df2eb4fdf27796e2fe4f02b. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/JPPC01800478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf775b2293142d71d463258ea61332896776f44d8cb33a2a8bf4ba18df8b885c1. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/JPPC01800481.