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 0xf37bc4a0e7c68067b6ba96f60272bd9363ab419de5cd571211bc86dabbe85963. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e7617170-d8ae-4406-bd91-c337b57bc2ee.json and https://artists.proofprofile.net/proofs/artist/e7617170-d8ae-4406-bd91-c337b57bc2ee.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 0x647555f6c22201633ad2f3c30205dc310370f367699f7b489d6256acd1724086. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/QM42K1821797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5b11ea701cfd396725980ab319cf9575e0f21dc5e1d1827b22103a2f581f9da. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:44:43Z), 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/QM42K1965424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc711a80f7a49a36461d6381b06890f6dd626516b6679aea28f85c27b6ba6c7f4. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/QM42K1801229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2604376dca2fee61da1606e333dc0492b03d86e8c81eb31833604830ed2ea03. 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/QM42K1979130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2604376dca2fee61da1606e333dc0492b03d86e8c81eb31833604830ed2ea03. 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/QM42K1979130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21eaa35d541d3a865d0a8cd68a7cdd4a0cf256ab9340975aa7920a5370eb887f. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/QM42K2004908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21eaa35d541d3a865d0a8cd68a7cdd4a0cf256ab9340975aa7920a5370eb887f. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QM42K2004908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1912d8708ee4cff27fa9511428949635bd90081e1362c82e7524918bfda1c888. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZKDK2059756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1912d8708ee4cff27fa9511428949635bd90081e1362c82e7524918bfda1c888. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/QZKDK2059756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd66dc13822b2ac77543d18c236ecca98dcdb7145e9c95edfbe1e3fcb7d4cdf78. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/TCJPO2177002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd66dc13822b2ac77543d18c236ecca98dcdb7145e9c95edfbe1e3fcb7d4cdf78. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TCJPO2177002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc43f7e456b6019d5a214233fdb9182dbca7f5fe599335f43bda4eefb74411adf. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/TCJPO2197487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab8b21512c69c40d8d04c4632628f6b95ed0eed81014671b4aab3c2cb1417f95. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/TCJPP2131263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b6fa0151abba6aa07d85d31f03ad60410a3905d1dab80cc14ddd68e7c1bae8a. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/TCJPP2131265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aa68fab5f6f6b9df56fb9b913fdfae9d0b3d02d9d72729c84e1d3920603d7c4. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TCJPP2131266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65bbd1ff23297d288d16c39790133475045f94962c190eea7d145a3d00a3a789. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/TCJPP2131268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd12d1c2b653cf32f0466e7c75c7a43be95933198080f4ceacd691d8c0ae5a30. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/TCJPP2131272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11f7fe5b2e1917642d5f2738459d9e59959d51e3705932496871417b53b105f4. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/TCJPP2131274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7d71a0f023fe9c0e65a7c34bfd20d78b1442ab9b9c7c948027ab5dd9c09d7d1. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/TCJPP2131278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8c29a7539a3eafaf38c0a0d20be5267ca4ce0b124f162efb463e7d27a81d8a8. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/TCJPP2131259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab8b21512c69c40d8d04c4632628f6b95ed0eed81014671b4aab3c2cb1417f95. 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/TCJPP2131263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b6fa0151abba6aa07d85d31f03ad60410a3905d1dab80cc14ddd68e7c1bae8a. 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/TCJPP2131265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aa68fab5f6f6b9df56fb9b913fdfae9d0b3d02d9d72729c84e1d3920603d7c4. 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/TCJPP2131266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65bbd1ff23297d288d16c39790133475045f94962c190eea7d145a3d00a3a789. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/TCJPP2131268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd12d1c2b653cf32f0466e7c75c7a43be95933198080f4ceacd691d8c0ae5a30. 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/TCJPP2131272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11f7fe5b2e1917642d5f2738459d9e59959d51e3705932496871417b53b105f4. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/TCJPP2131274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7d71a0f023fe9c0e65a7c34bfd20d78b1442ab9b9c7c948027ab5dd9c09d7d1. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/TCJPP2131278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5273fa80f44317d22f76228cec4d877e19589ee6d408910c85bf35479d3b005. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/TCJPP2131284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa0d4fa4cc33112120e6c01ad0fc083d077a68f47d4b8f517e9fde0d59af7871. 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/TCJPT2234477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffc9370a2459b80f3b0915c94670bd03670d61e4b54427298b2636ee98500b32. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:55:19Z), 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/TCJPX2390878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffc9370a2459b80f3b0915c94670bd03670d61e4b54427298b2636ee98500b32. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/TCJPX2390878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x424862280c37a3369d610484f8f3fbc986e6c278a7f8ca98d2be061703039adb. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/TCJPZ2491359.