1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x5bccd5369296418c6b2a14b5c7506fa1d5922a7c6eaf84318505da3003f40b66. 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/2fc16a34-e8b2-4be8-9c27-881511ca9698.json and https://artists.proofprofile.net/proofs/artist/2fc16a34-e8b2-4be8-9c27-881511ca9698.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 → block OTSBitcoinBlock must exist at that height 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 0xa42d86a33cf4063c2351ea44f4ed86975ff4ae1cd071f278bedf1217ef840f63. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZMEQ2344229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89c237eee26581c9acfd9991f086005d949db2c7b26d5d263a1bb0660a5375a3. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/QZNWW2322076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x547f363f8b3acd8213b7165d26d353318b80916191a0b711c53eda3cb7acc722. 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/QZRP52393133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25e99e4ed9879301e39c15cfebf896d2a8697abe2e6aa9556c91e748447ac466. 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/QZTB42325832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7253387f45f6e2460fc191b33ec9957971eea2cace40b3b616e5c2d89aab7385. 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/QZTB72335352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc68261896f63387b95c4d826ec1a0f08e0f8db7ad505260818a18ae6b71dc61d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZDA42443142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97df24383f3eb4aa2a3ae3d5807ad1ca9f3d77f7f3330af545ff39fa8976749d. 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/QZES82493994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70d73210ee2aec624fe05e869fb08d9e669b7495ae2af42d07674b558838efa0. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZHNB2496317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e85554c0609c85d133ad59e333a3ea2002b70f26d3d8fdd03e8a3914a675711. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZPLR2475452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd95003db251f060a3ba1e2eacf53b11df8b3de04eda1acc53fbdcd04f8f5737b. Chain 2 (Bitcoin): anchored in block 956383 (2026-07-02T18:11:59Z), 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/QZTBA2491702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86bd19ed7a9acd476d0f0f144331fda7dccbd40cb4dc5f9bc4e4aa089e4cc914. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZTBA2491704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fde35257341d58d9d1b33710f97c8ffff93a5da878b2a02e6d0ec78db3b67a4. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/QZTBA2491706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd57ddcca2e2e68705decbbf2d9091b939fad6abb1e2d72d518a54646cc8eb35. 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/QZTBA2491709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda8b1b72277691f4cf0caffd49945f1977816b5a6d5415ead796cdb9076fd9c3. 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/QZZ7Q2477120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdc5b3b0cfe6c97d8bf2544dd6275e6191a66cea36f93585c9bbbc4db502310f. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/QZFZ72506799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11fb292d1a44a31a8b750088744b9a912a1af1c909b625096c806af78d512f71. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZDA72518512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae66f3836ad11b3d134feba5d153dc6922f9a7b8df643665615a6b36780da579. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZDA72518514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15a2836da631ad3c44e4a5eca63f9dc55c924694006893d3794613b3efe0efa1. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZDA72518515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44a3e1a08c246179d0e83dad3156a1ce78f38e8bfe430b416321f7104eac2ca2. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QT3F62549549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb21be118781578d19c5fd27ed0768f4eb3fcec292c5949f661f56debc23831f. 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/QZNWT2421017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc69aa7e30258f29ec538abad71bd7a6efd92ed1dfc1155f06cb831549ddb3d87. 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/QZWFW2462892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85a739329b7f83b757a544766dee4f9490d2db223f0ac21badcb5942ed8f3662. 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/QZWFQ2491870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa000d97cb51a7207d0182be0487c8211fccf8616773cac758290fa8296b58ba9. 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/QZTB82400113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaecd259c42b98a5e50fae3c423077d7100fa030e29d869e044c75775b820a089. 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/QZMEN2444764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0df1b11e159eb581444f39bab46b4699ed2e1a2af9962e7039360f32cafff061. 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/QZPLR2396197.