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 0x8575ed67c4e0e6c89fc61c4065083a0673325350c928bed1d29f618db33e505f. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/61d9571a-61db-4e02-8d85-59981b0ee0cb.json and https://artists.proofprofile.net/proofs/artist/61d9571a-61db-4e02-8d85-59981b0ee0cb.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bb6b3d07d8691134661c791fe3ee9e2fad4edea2dd8116b91d3b0271c70cdfa. 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/JPJ902205180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb1c4d53c6b482f3aafdc7c6f05cdd7f82ff446e96877fff2c7b5fe9ef32a750. 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/JPJ902205810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64e9e8d425b8d56e3cc5db73af04a861fa8aea85a2a0ce22d5f7dcd3c01a62c8. 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/JPJ902205820.
Mirage Op.4 - Collective ver. (feat. 長澤まさみ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22068e21637637e5d6df2f0b50c86541c176d1d34aa8e22d36498ff0e0fde404. 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/JPJ902205860.
Mirage Op.5 - tofubeats Remix (feat. 長澤まさみ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3541ce2216906f31765af7536436c7f6da98dec9aeff9faa38a34847ff75adef. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/JPJ902205990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb1c4d53c6b482f3aafdc7c6f05cdd7f82ff446e96877fff2c7b5fe9ef32a750. 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/JPJ902205810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64e9e8d425b8d56e3cc5db73af04a861fa8aea85a2a0ce22d5f7dcd3c01a62c8. 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/JPJ902205820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22068e21637637e5d6df2f0b50c86541c176d1d34aa8e22d36498ff0e0fde404. 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/JPJ902205860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3541ce2216906f31765af7536436c7f6da98dec9aeff9faa38a34847ff75adef. 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/JPJ902205990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x707d6e8c934c0555f62111d593f3fda3290967b677adb3b66bc5f42c5e53559e. 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/JPJ902206000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e67a0e1c3bf7df973a41880f4c1ff097d0f49c39ec197e9a20bda0ff506e4e5. 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/JPJ902206010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33bcc6c786c174e734283dc32241e3040b46bcd567475a6f195938b0b658ed4d. 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/JPJ902206020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba5184ba13a19e703aca8b7f2d44b3ca9968b30899102d2e66447ca8f967a98e. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/JPJ902206040.