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 0xe1df513990bc86b9b94724b08d3578578bfafa18bd25ca0f113c6d1679f384a4. 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/bd4ec6b0-ba8a-4807-ba76-92ed50b46ee6.json and https://artists.proofprofile.net/proofs/artist/bd4ec6b0-ba8a-4807-ba76-92ed50b46ee6.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 0xbd7bccd4e3663d391a6a75b061ffea1e6a5e4e6b4fdb7f715c7a4352ef210ae1. 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/JPM551400142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c76210c60afe06bc9c934f52b4b40d901a7bf9618ddaf2d802cf3d42753375c. 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/JPM551500035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x822e1056df11f28dd9caa82d10e1728a4df02f46ed02e9db64b637b2ec69ec48. 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/JPM551700173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6fe62ad1c69a90915aee34f52dd8722a7cf68c1c9609fbc4c7f3a82b27eec96. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/JPM551900049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69592c38eccd68a64d17912f5d9e35fbcc4522d203678ed3025846b854398f61. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/JPJ901608780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3e8c9c51b44e4b646c9ed494c73a2fb2d71a2515368f4987f85a3e56e38919e. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/JPM551500158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x592b3811fb6649f15a1b5024fdceb31f6002591ffbeb2b7ed7c40cfbac6f3d01. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/JPM551500159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86e354dbad2646afec672269524934a42e40d68a2d4d48d5e359fe32c1b49317. 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/JPM551500160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x504796a53272676cf972c412c76cb09eff70fb2787b123f37b36d303adc0c34b. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/JPM551500161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7478e37f64ca0ef9d36d7bbcba60f819dc6013faf56ee1de946629bd7ea63767. 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/JPM551500163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aee61a982c683374354e5aca6eabdb08bb300fb775d5749d693eac08c122c6a. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/JPM551500165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa383fef5a12433ad2a543e86265dca1eb9777a8ef1a67762139bc8014fd893b5. 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/JPM551500168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81045644448d73a915f583a6236b243d1769820f737dbfc8572c06164558129f. 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/JPM551500171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a11ebb5633b4e4bf12601abf6d92682b6b18f14c0313570d73f76495a541739. 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/JPM551500172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07feabfa38b00efffabf501eddf9798ab1637a6027c01a8d72205f05718b4306. 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/JPM551500173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1c542dd29fc368d35c5f5f3712d68a7205310f30add9abbac61631ff76411b2. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/JPM551500174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fabd2feeb4f717a723fd3dba3eb03bdf812ce86d4ccb715d0fde9fa4e34a1dd. 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/JPM551500175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4490edca2232c4c6463d3fca307f7b616ac6d1d29538a1c81677fb4976348af9. 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/JPM551500177.
IYASHI [feat. TERRY THE AKI-06] - studio in-sist REMIX
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd79309da55532ac94bb994f4aaf0f9218455a21fe1fa667e920bca54963f03d4. 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/TCJPF1795656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86a328a1d1f8d5a6906400f61d72f4a08f4c924e83678a40c9e53a2e4bed8cc0. 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/JPM551500137.