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 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 0x77d529f55f30d2a495b4344a08f05503d8850c6f6bebe2e4df8bb81d5bb24328. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a2e899f9-ae4e-423f-9b5b-b9b208d37826.json and https://artists.proofprofile.net/proofs/artist/a2e899f9-ae4e-423f-9b5b-b9b208d37826.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 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 0xca8398d72598dec5c3d57bb4dd2353567fd5c81bc625b29a5a5544180b17730e. 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/NOUM72200059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5b128592639342eb3db0b735dd6a27186e0a34acfaa25ba25962b7f3df04d12. 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/NLP762300143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x877715087d92e597f9ae4fee19d8a64e1fedf34007156dbf656bf6f4592aa22d. 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/DEUM72208165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe22dda38ee38156ec3761b7302bcead244520a4a1933b870d9163006e3e46b9. 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/NLZ542300258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe220ae90bc9d03c0bacf739fc96b47f3b171ef99778427457ea31b36c64f1d06. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-17T00:07:11Z), 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/USHM22189248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff333f0bd9e8b07d9601640ef051b8146f45bb751f96ec5f8bbf41fe78eb5612. 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/NLZ542300259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7112ce92bb4dbd4c0b1e541cb7f7daf5334f32da7bca6f4bf79c0747cd6eff08. 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/NOG842401010.
Memories (Endless Summer & Wave Wave Remix)
Memories - Endless Summer x Wave Wave Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x729178b2eefe923de58d11c594311208bd76d8413c80796a42500c9878e3a259. 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/NLP762300151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eadbf9f301ec23b34a38f8ead676dc2168ebeeba0c6626bfb33a2dd15d24043. 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/NLP762300148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5b128592639342eb3db0b735dd6a27186e0a34acfaa25ba25962b7f3df04d12. 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/NLP762300143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf828a1aaf069439df8ba5480ced686e952e99cdd9389a563100733b9af12ef3f. 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/NOAGW2300183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42d356b794df99492f1e015f86028bbf6e7a559e6eefbe5df97c3f582acd0910. 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/NOAGW2300081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed4aba39084061079ec04d1f4e4fc06d987e1bd58e96bf33bcba50e196d1f744. 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/NOAGW2300055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee368e41268338cea55172097cb4ead0efcec8eda001653c9296fc1a21e73c70. 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/NONUQ2207010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x165ac96d0530f0d35deb077e7b134ae709c74ef8bd5a9949d55af917d483299b. 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/USA2P2115653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd895e029d19463ec2e2766abf55e21e0c84b608eb8abc251c4e854e00d60dc8c. 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/NOEPO2000031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6fe97ad6d68eb39bfd1ad07582c83880e1a9399140af53635b797c61c7bd24c. 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/DEA622403695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eadbf9f301ec23b34a38f8ead676dc2168ebeeba0c6626bfb33a2dd15d24043. 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/NLP762300148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5b128592639342eb3db0b735dd6a27186e0a34acfaa25ba25962b7f3df04d12. 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/NLP762300143.