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 0x1b4b577aa74392a0c2ddd25a0027d2f59521d0b4800427dae1fbe715d45933b5. 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/b1c582fe-6838-4e13-8a82-6a0a380c240f.json and https://artists.proofprofile.net/proofs/artist/b1c582fe-6838-4e13-8a82-6a0a380c240f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Hello Rocks (from Hoa - Original Soundtrack)
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 0x287055eb0a563356f2e7256298d0f7b4d24b875463b06851d05f766bceb9b6ca. Chain 2 (Bitcoin): anchored in block 957613 (2026-07-11T21:37:58Z), 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/USQX92202607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d3bf4226633b320db305f8c4757585990f19283c75abe16692b0c874f407e23. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/USQX92202608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba04a876a5522201e7f9a7db02c908ecf1a558c7767b4357fe0d5d49d877ebba. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T05:02:52Z), 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/USQX92202611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27cafb5d9ba2013f9c68ac18f9147a06e6bbf211d114e0bb491d7a543374c047. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USQX92202612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7378bc8007d87d4fea6395a46aa861c0edb87648e74564d4a854407d32d5273f. 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/USQX92202613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaa4ed802cb2f913ee934402c8c7fc607a39a4f6ebc7df06327bbec4d0e48e74. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/USQX92202614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x686c9dcaf106aafecbf7223010afef04f89befd0461ea1471474ec7f13d10564. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/USQX92202615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f07cc37e616cd1e43f56bbd2b40e3a78462014629ad1f6414e15a761b85b5d9. 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/USQX92202616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72a280960324af24394f16aa43f053be528a3b20825a8a913b81b6e54d43d8eb. 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/USQX92202617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d886f0fc3cf9ec56e5e0b66238ac70ddfd2c9a613b34706994aa9b5bb97fe32. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USQX92202619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac77a088056e17ac57e3981d400d1ece0ff7366b36995cf810bb45710465d7b3. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/USQX92202620.
Overthrown (Original Game Soundtrack) Vol.1
Overthrown (Original Game Soundtrack), Vol. 2