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 0x9a371d35a7ebe5e73f058758247532a07cf76aeded219b63a0c6c7c77d60b02e. 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/d28d31e5-b3e0-488e-b1c2-69fabbae74de.json and https://artists.proofprofile.net/proofs/artist/d28d31e5-b3e0-488e-b1c2-69fabbae74de.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 0x61bc557b6be126a6918830904066d4f56725559b0e52d9b899755792bbb0e811. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/KRB471801266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x024ed57cf30b6bb555c508a27a796b81282e4a0b0ae582097848c89d4f99cc00. 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/KRB471700510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a39e46b11b5a39853a7e68b11111c4b10330dfbc3721e2bb366256ede58c499. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/KRB471801842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe70a3e143e1d26f8d8f69c319788c25cd54f3ca994fd6307bfd547b7fae3909. 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/KRB471701912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74fce1e86284274a74793d32ced4e07b62bdcd9d92b805616a435090a0938a1f. Chain 2 (Bitcoin): anchored in block 960231 (2026-07-30T08:33:28Z), 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/KRB471800945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61bc557b6be126a6918830904066d4f56725559b0e52d9b899755792bbb0e811. 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/KRB471801266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x665502203214e19d62a4e4aef769cc6cfadf9bde151f0cf3cb12c9496a79b78f. 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/KRB471801134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa05f52013a5c9f35064e955cac99f97201ee30fdda29b28d7d3b5e5eb9d26d64. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/KRB471701913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61bc557b6be126a6918830904066d4f56725559b0e52d9b899755792bbb0e811. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/KRB471801266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x426d2048533219499ae7378392ba28076b8a8cc8a85b49dbc7d937e38cdba7b7. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T07:27:09Z), 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/KRB472000852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57f1b739fb7652c97cc77116083692ebf6dc51c147094482fa11ec6779f91e60. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/KRB472001630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7cd63478d549904379eedba041ea6a2cc36b33a014c3e37857acba09efe6aef. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/KRB472101400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d581bec7d0d9adf6c8710b5b550c1b157208bb7dfc171edd2457cf8abe3ccb4. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/KRB472100734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dfb70e6026db3dd71e71682aa0e50ed0de806a87b88daa1b42311dd66fc1f83. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T16:15:11Z), 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/KRB472200979.
Highteen (Feat. Lee Won Seok of Daybreak)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x237d3ca3e8716560518f3d74bf185490df973606b36e3fc7146c8dfd4bc32416. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/KRB472201262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf89cf3f48d3d4a9608801073cc91b1e0516f2745fedbfaef9e5b5a026d729cad. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/KRB472201269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96e14379916ebbb01d881db294c5dbd28b68bbe930f1286093c629e7f71bfa72. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T04:30:07Z), 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/KRB472202109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad1253cbf36812b45b2d7440bf406a261718b2177bfda38fa756774ef8c67811. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/KRB472300726.
True to Love, Pt. 8 (Original Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3c49b452eb02f337d6c5548229dbc2529efc0be22233d88bc70c14e257222a7. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/KRB472300839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e4ffe907a92d09a4ec58de8b303c3d7d1949d28ca626ebe3afed56b4627545c. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/KRB472401145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a4183c34b45e41b678dab147265322ecb148b8c7695eb776467a38da522d7d0. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/KRB472402842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x310fe884e935f894dd791e6bc4e032bcce49a66dcd95b4c2faf2d43933abe3e8. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/KRB472402843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa38570fd2dcb9e929d17d039d884f2534945b38c18f3959f1586bb9d8ddd8f28. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/KRB472402844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5f8ffad5e3b9c347caa6120e34462a09677466494c7c28a695d44dcb2f24724. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T16:15:11Z), 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/KRB472402133.