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 0x283f8e26bfd33809d9984a148b2732cff92ee2a0768199c087376347f8b04693. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f7e473bf-1b21-438a-919a-8a5b937148ee.json and https://artists.proofprofile.net/proofs/artist/f7e473bf-1b21-438a-919a-8a5b937148ee.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 0x907ea1506b7f0991f6664d78fc7266f11e44c3587f7862b4012cbd44385603d6. 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/TCJPB2468347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x643b73e52bc370066135d3d651b5dacf1fbd5e3ec5cd42ad047994839ecdd08f. 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/TCJPA2453514.
Kimino-Sukina-Hitoga-Watashidattara-Iina (Piano ver.)
Kimino-Sukina-Hitoga-Watashidattara-Iina - Piano ver.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf841607d47f4657fe44a2d49a311b8b10bdc7626258498e5024cb154952991fb. 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/TCJPZ2485825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd15d09e6f50f68c729641636d6909b4eecc6a3aebe872d7d97ce3042276f240c. 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/TCJPY2336520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x373e0b1ac5dc6c923939d5ecbb7604c599726da1178e20ffa3f34b0f7da20e65. 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/TCJPX2397106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad89cc4401e4bad21b36247403968f3fe0211b0ebb8bed5cc7d8c43af5df5c0b. 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/JPVI02301493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb071ee249cc624c6ad96885f6a59be0350d0b6aa6ae75cb052a309c2e248bbef. 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/JPVI02300442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5191c147818c4c7386a3d962a9a69954b527d7bfee9a13ccc26b1ca272554323. 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/JPVI02204085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64de65a18438dfa5bf40deca3ef119a86885cb49dc1c69fc51e9952bd41ebfbd. 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/JPPO02204201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6102e49094cb313dfe8902019c16d3f3317af021803d17b99ba0cda64f68474a. 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/TCJPS2272008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba5032706f926c61867863c34109992129d1466544b6722f1961527420295445. 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/TCJPR2221208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x053f4aaa17650aa3cdca0fbdb415e7a0c7b40d8d022dbfb57d1da08744c434c2. 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/TCJPQ2154712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebde092dc9497edfd35ec562daec7d3cfdf80877ae0b94d5c0e3f8409031d9fc. 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/JP92C2100231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d5af7fb76476b1d8f8b4b20d330be2630746ede61466c2d70d919579f792464. 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/TCJPG2587869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x432d17bc1014dd74d9bfa4923549dda07fe24f6816d2f15eb0c4ff86fbaffffd. 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/TCJPC2498446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdce5d4983f468be3d78b05d9fea1264036d47340321cbf57c9aa782377dc076e. 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/TCJPC2447906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x103f9ec3828940cff657b362353d2c6d6d919d861b4ccb552a3785f5eaf1ff42. 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/AEA3A2241420.