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 0xaa03b639ccb5f124e0fe82e5ffe1364fae3cc93f8a1ff1730c5ef200b4e68d0e. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f719e278-f4b7-4eca-bda0-e48d695f3df1.json and https://artists.proofprofile.net/proofs/artist/f719e278-f4b7-4eca-bda0-e48d695f3df1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
CROSS RIDGE(EXCITING BEST Ver.) feat. Rosie
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 0xf2defcff0fd3e49432c37a8b821de4571f84a52072909c2e54602bf642b7d29c. 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/JPW562002081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x199e3c600bd1089ca4de638023565e7763ff01abb2da629e89a6afa9e9d613ff. 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/JPW562002084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae9a99f8d949400c54528d107fca9a238d146c18245b3bcc687d35e9fb5cfafd. 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/JPW561901904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43a53a3ed0e90f979205f814ad14a161e57dbbea807a27237a08f8a9c62a9dd0. 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/JPW561901928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a9106960e9a370de7a4f0ae9a3992e777fe72e2256691891d9750a722368056. 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/JPW562002172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e54ac14c335f7968ce7e2ddd8d4b28d392f92eac424205c740a49853195cc50. 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/JPW561901952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb32f7caff656c483b3ff4052631c23ee8c69cbec107008f0b5f9e2f65435f22e. 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/JPW561901881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc385ced5ae7f640dcfbad40dd120b31e769969fdbbd719b032a33770cbdf6f28. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/JPW561901918.
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 0xd43d2c7947ee655130bdb6c3c83c01257c6d4f614ea66f6b5c9e7eadcf84e80b. Chain 2 (Bitcoin): anchored in block 960330 (2026-07-31T00:58:21Z), 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/JPW561901894.
フェイス-Behind The Mask-(TEN2 Ver.) feat. Rosie
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf32e5fd101bcfd539808932fa85d8c0f845c4c642b97dbeaa6c17df5e0733618. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/JPW561901966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe419b9aeb8525cba4d759ea34354e16d0d44f13afef8154f503c2d1c7e06de37. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/JPW561901888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea1bee924b80dab98c438d6072e5adf4b75bd6b2b481bbaecaa5362dda5cfce2. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/JPW561909852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc8b547e389509bc21753c21dd47c02fab6a4c8e2c1a6d5686ee07c72856ffba. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/JPW561902052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2ad6807b4d59681ba45614fd1dc1b6746472887ba4cd8b19092b1a9248e8138. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/JPW561901934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8f8d2dd5572611aaf9c9489f4e72494447dfe2bdcf08776d6ebac574a79e7e4. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/JPW561901951.