1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x957a17f91ba3530f20c6c454a8ee458529857f94b9d4e071acfd7d3d270d4961. Chain 2 (Bitcoin): anchored in block 953727 (2026-06-15T02:33:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/90b3ca28-3870-4ddc-aee7-42377814173b.json and https://artists.proofprofile.net/proofs/artist/90b3ca28-3870-4ddc-aee7-42377814173b.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 → block OTSBitcoinBlock must exist at that height 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 0xa5bd16322f7919120386e3f248a7cff784b6b8bc87e18b432341ceefa1291736. 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/TCJPU2396408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05f2e1ae6f5b4aabbe94929a8480f075ef256e59c623c1e4b661d71d880a6067. 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/JP92Q2400095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9b0591749adc57920b23cd3d8006d35f06668d1b6e0a2c6ed0b251fc3a37d75. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/TCJPS2281585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1f2aeea7b8203407c62518c3802f7450e3c7e1b7829fb3dec8689a04997a611. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/JP92Q2400098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62b7609d833544b3be701aec6b86f5bda91bf16950bbecbe967428dfae794b9e. 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/TCJPT2246238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x747e4c444fdf8679d0408fca3f1037e558a8bcf8226d339014ac02340c77a379. 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/JP92Q2400106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf1d2338887d74b7140586ff58b78bf6b8c187c59fda93a8c0d22f6d8128a15c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/JP92Q2400457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb70e0a01e4bb9228e829fb8c040dd4bb45257a5f5a06cc04c94f7396b74728f1. 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/JP92Q2400951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe76024bf24b9801f7b72571b938890a1fec9678338e7103f12f93612ab835cf6. 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/JP92Q2400952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x848f5d75e680e4327d69dc6154e3efc6ee03ee0c291beef6125c33f92cfe3b60. 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/JP92Q2400954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e5ede061ce06555c8a4c6d49f100f552927ca9c598d667b825f0c6841dbf12e. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-07T15:15:30Z), 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/JP92Q2400956.
僕の居場所はどこだろう (feat. 初音ミク)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2594dbd37a84997b227d68a598917ef17fc51141887875db9e774d0a1950d3bf. 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/JP92Q2302181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0953cae4924522ca3e6e0c0731276652182c91da85d471ea14855f9705b8f4c7. 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/JP92Q2302182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb9a05cb7b5892edd0ecd5efd34bc346aba1b7ddbeb5b93e9dfc716cab62dc9a. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/TCJPO2165272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa27188110ee0e37683e91a7a3812b7b066fa220edf8c7178b6879868a9b0a2b7. 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/TCJPS2281726.