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 0xc4c2f5895a4b7664ae597730e993ee552569e7586fe27a68715aa186ff472087. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e91a59fc-3b02-49fb-83d2-63f3870ee8ba.json and https://artists.proofprofile.net/proofs/artist/e91a59fc-3b02-49fb-83d2-63f3870ee8ba.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x959f1a47bb3553c08b076ef4d5f0e691f878d2ec8df2655f372ad256dc430eb1. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:39:03Z), 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/FISRK1800015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x515d308491293773747212df98bcbaeb30dfcb3674619667d42f8afeeec07d1c. 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/FISRK1800016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x130c4a0c62a5641048b9ae3a87dc00d1f6a1c191642f70369a6df2ebb7a26aa5. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:39:24Z), 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/FISRK1800017.
Siionin laulu 104b Oi, katso Jumalan Karitsaa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fef25538e77f7c792fe1adf5def5526b1e90787e6fad4b3d211bbb491696c8d. 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/FISRK1800018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d5131b179ded6a0a97d2a857b90f81fe57c129f6d239d70deb7ceb4a74db0d1. 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/FISRK1800019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05b236bc738be72b25d0b909755c327d73517fc67677e29227d6c0652119b01f. 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/FISRK1800020.
Siionin laulu 285 Herra Jeesus armossansa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a5bfb9cab3a975b37d6af130d2137e54c4af603bb174a49e7d437bca86292a6. 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/FISRK1800021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x383d3a0eaec4b76ffadef0dbf7b69749dd460173aa173ef731e83a6f1dabf6d1. 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/FISRK1800022.
Siionin laulu 39 Jeesus, katson murhemielin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc77eaf5e026067c4e02ad80a2885e21f365d46b53692b528451e09ff29b22706. 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/FISRK1800023.
Siionin laulu 40 Oi muistathan, lapseni, Golgatan
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa23e6246724e2ce71c3b6445f33ebe4f9dcc18cef299f608e9316106556c3ce2. 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/FISRK1800024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9710727c1160e77455195e6363183a1928d8072f3a8f4a708ea2b523fcbe0b3c. 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/FISRK1800025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe860b6ab6811e9446e306904ed045f9532c131ce59a5493401fcbdaafdce2841. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:36:16Z), 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/FISRK1800026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5317aeaa300c2b90979e03eccf03148b0a5f2f72fd71f1f2f7cdc579b4f9172a. 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/FISRK1800027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfceb9ef6e74ee74f63db0eab5f5630d274bd054b224329a5ffdc1fabf2ef5709. 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/FISRK1800028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2faa2fe172ae0b570c6bec114ffeccd68a4ef13a0fe84243c47283207ae249f2. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/SEYOK1814167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e71448073c5b9f24a257a99ce93326236b4cadde8929eae8699eb3385f77901. 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/FISRK1800031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x509bab79c49bbc02db9cd6dac1c01cb0e0c9e5f9ed57ab90d36d86896b24fe75. 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/FISRK1800032.
Siionin laulu 246 Herra Jeesus verellänsä
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x920c47e105b099eb11cdf4224a4480e576d9fa61707e986565399a253448763e. 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/FISRK1800033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e828a9b184bfbaa60f8ef4032924f298ca105338b76ead2493c7b23c0c3f013. 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/FISRK1800034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x304995a205dbadbad6e93e703218c9b5777b0012ec33a9084455b1f861eaf352. 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/FISRK1800035.
Siionin laulu 180 Mestari, haahtemme aaltoihin vaipuu
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf66a8b7e30ae6ef8b49747067feb9cd216812b2fad5671993ebccc49d417b8ac. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FISRK1800036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb22988b64dfb4363d789f4e6d5331c6506376089ce51861a43e76ab7fbf5feff. 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/FISRK1800037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcf999a23f3c2009879efbb17a3493233664118419a77da9f46c14d28904d75d. 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/FISRK1800038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44220b3b5b2233ba6ad2b0598fd91cfa814e2778ae2e92884d7412520e0e7e2a. 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/FISRK1800039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffe014ab3f2824c31f6f209cbbf5fd1b16106ceef749ae6793e260be9938887e. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/FISRK1800030.
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