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 0x04e01f423875d0a06f35509ad2e351f56de5cd957f79df6056eb4006bfe890df. 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/a66bb784-7ea4-462b-8954-c7da077860fc.json and https://artists.proofprofile.net/proofs/artist/a66bb784-7ea4-462b-8954-c7da077860fc.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 0xe500bf59e3726d695c1b01cb06efa6d78a8cbc7f34adba1730df257f8604c537. 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/GBMYF2000162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ea1b48bc4d7514cf0c6d710dd59016f6875e5b9c763440b5cd753db7f89580c. 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/GBMYF2000090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe500bf59e3726d695c1b01cb06efa6d78a8cbc7f34adba1730df257f8604c537. 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/GBMYF2000162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b6b9cffa730a24df3cfc167bffe87663e694557bda831051e9aaf1f5c7b5550. 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/QMPKX1736400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f7022d30bc41b2c0e1859e583d9611302b8d3237fd31b3fb80617321871305b. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/QMPKX1736401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a12bc4cfa07cb903a1b93c366115a1b46c4e264f871f0d00d8fa136b7b827e9. 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/QMPKX1736403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1c32f9c42cfc866ff759fa41bf6235712b4a0aac4e24d7e8fc009d304cc232d. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QMPKX1736404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2f64608f0fe7138970984c4956fa2839d17b07448ea891c24921d45259ee45c. 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/QMPKX1736405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x567e577a28adb5c3d8341ae828ab2ea685cb2a24771c0f1d7606fe81a17fd881. 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/QMPKX1736406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb8dab1d547744371a55195f1f4a2bd5b0b298ba764c3c045f54611cb1f3bb02. 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/QMPKX1736407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd46a77da051dffa623b3d05d629bb08656be0a4a78eb1de2d5c3977a92769b99. 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/QMPKX1736414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdb9c59ee22aa41043a495c6941b282d5d57eb8c52304de9d721a72ffa518c84. 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/US6680916246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c270022f7706b3e697c082c6169244c0dbde2866bb2d25f86c79d34f134d207. 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/US6680916259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d52a1028dc3b6f93c6e1cd71e26c08ff344c91c66ff8d519f6a7b59fa5eb163. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/QZFZ62241339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb57043037f18028c70e6699ceab7c105126f7ac84989ba611a00090b22fb22c3. 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/QZFZ62241342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae3d8e43565a0c721dbde3f74a23bfe650378882a39c7029780cb29acaa5dfc3. 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/QZFZ62241353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35c8d5dc2fd6a6e43d050afb184f14d178979eb4c7127661f6d90f7e1989f876. 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/QZES61898827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e205eb64ac8f349554eb7cc2dce88250d678714a3f1993a5f30c813adba5732. 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/QZES61898834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f3a0509ba2a1a939825ca41a2e0f1dc2d99c0d35270f9a6745939a2d728f80a. 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/QZFYY2249143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcb661f147a0e51a64d8a80cebfa704821e9f841ae1d2097f6cb8ce7b75e2884. 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/QZFYY2249144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c2edc17c7644861aa82c890bd8a407d734ebaa2034df25cdea01053b8e24fc5. 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/QZFYY2249145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23a06b0b78c95b70b2f86dc24c7302571905de2037148b46a2c5a74375bbb9b1. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QZFYY2249146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31d6d7cbb11de254611c85541f997988a95e7a6767e29246f28307472a781ed9. 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/QZFYY2249147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce98c2f459ec136d847b45bb3a21bbf15ca8537324b7cb70ce6e10dc39a0feee. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/USUYG1191330.
Koncept Jack$on & Ohbliv: One 4 Slphnc III
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52b2816c33f2fbc29afc4d93c2b0eaadf740df9bbc753cf1f6f946239a664028. 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/GBMA21911128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c3fe3671073222e725290099ce0388b325c2bcc798cbd542d56c6614ee6f481. 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/CA5KR2278816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b2f1ce42040c902edd596233411b5f4330d2354de09aa3e2c004df3d9801aa6. 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/CA5KR2278817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe701d68d812a37a653771a21830d952b16cb1d0628fcae0fb06cc70eacc0c72. 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/CA5KR2278527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc56b517dad885b0f6b8c75013af70a24ab6558a6c4b285eb3f7358efac3c07bf. 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/CA5KR2278819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3432f6e26a9153cd686fe5e94f6722c9434d9e688218e7e341bcc42a922edc6b. 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/CA5KR2278821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x719687535dcd928eadb204c1db3caacd185814575fb96f61038f9c93a80deb93. 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/QZFZ22059495.
Moon Is Out (feat. Kent Loon & Chester Watson)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01fc50b7dfeabdc51c2699ae09ef48e8f2b9f8b281be20870057ccc3071c4d5f. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T02:17:57Z), 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/NOXYO1705010.
It's Black (feat. Oliver the 2nd & Jeremiah Jae)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x966600492d7362c994bfd58eca16eaaba7e7a9c5a2ee3a10370f91c12ded79a3. 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/NOXYO1705020.