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 0xd1c77ac7c271087f2c72fcbb478f31d78f8e2f09c6c9d652265bd3ccda691329. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/48aeb1f7-2ad6-4f32-badb-8e45a174a6d6.json and https://artists.proofprofile.net/proofs/artist/48aeb1f7-2ad6-4f32-badb-8e45a174a6d6.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 0x5681b5853c54eb7c2da878ecf37167f7ac3ad658d9716e2824542e379fd33bc6. 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/TCAEE1923328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbc3be7ab3167b1d2564201e7331a492cdf3997fe873cee91aa86cd0288fd755. 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/TCADZ1884264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36b7bfae3c4a83c24b664baf90b669f3acda11e6b4036c437710c5e367f85589. 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/TCADX1869801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9404225520eafa75add5893b507032440a0760187ed2c98dd9b12c26ba1815b6. 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/TCADX1822665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09e373e149750fff94bb25b055c1874e297cc321eb16961f38c3cf713b6bc147. 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/TCADW1882189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x121abb8701629942b885c5774c873ec7b01ba669770664365f74514dcf92168e. 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/TCADW1857995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x332f9dda7ae051e1c439c31db7f22104472cc66c15f917e16ee9b52b18757deb. 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/TCADP1800344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c426713a04a9a100aba477a842869d23ba5990d0128542511d6e79234e3617e. 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/TCADO1824012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x254652b11fda221659c9523167af6e0f928f4e6ca2effb028bcea79046206802. 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/TCADO1818916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x682be42603163f7dc737bf0a1a6c8f7369a46d1811c2e19d2bb38a7511ee3ed6. 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/TCADM1805921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca75c86cfc7f783dcae338fa7ebd9e2d04789ec92e2c81cd02c2c39da6f8732b. 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/TCADH1768433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d21cc285dbbf3740902fff4a968ad91854e8625756e5a353906cde142e21c5d. 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/TCADH1768439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5406747fc7ac61f1fe16b7d1eb8057736ee8dc42ad33947959c5fa3fbf83038f. 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/TCADH1768431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa840a8b9f01223472427002063a56db1693ef88556d58bf033f0aaf026576b16. 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/TCADH1768427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25312dbe91a7a37fb7f6e28b23a359790ca71f0008d2f5fe0b790cee9e0262f8. 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/TCADM1891420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36a8fc3a3ba8f186e7d23e3fffa826998ce196436a58fe60ca8fa40b86e89728. 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/TCADM1805918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb19f5de47b4e7d4f82732ef4a7e087d6eecec187819afca9fcb566669831d17e. 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/TCADH1768443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09656402b6f57f8b5ddff202669e6afd8a27c85b9363da2c26fa9dfe417a0a50. 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/TCAEZ2012939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5556c2189ef606134b321b53ff7dd172eeb98ba12a4a6235caa2a6dc5fd71790. 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/TCAES2033458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaea4595549bf828280b6a0703a1e2e93ee4b319a9795d3ae87de796a38a210e3. 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/TCAER2069254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e82dc85771f881f78d6afded767eb0f0f281470a4c1743bde8ab797d65bf8dd. 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/TCAER2006970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f2abede275ebc0acdb44b39b37f06592b32c950a1a2cbce844cf08b957bbd3f. 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/TCAEN1959056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fd9ce0acf6539b80dbd97f8437959f19b8d20886a74cb12742c9aff5296bdc4. 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/TCAEN1904284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc2ea6fd2b1f4983b6421dcd783055160658f58e4cf42d8e6bbaa61d819c9a43. 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/TCAEM1904535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50804de832b3374e2b1b0e5c098d1f9f73547ee5f054b4f808e1539f6497f2f8. 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/TCAEE1923338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08da7f1e53915da5def666a371a6fdc77a7db88d6df57b43815b0618c0e4b849. 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/TCADB1728774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c880ca7d8aa2d0bd662b412a06a5bd6ce356fdf0421a5a093ae196f098d029a. 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/TCADB1728775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x996c1a994db1020cef74d1c3ac9555a863fcc74744f2bdb9703c257ebf5fc686. 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/TCADA1712469.
Splash Brothers 2018 (feat. Olav Haust & Espa)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdce3ffa84e6174a007c64f54e8fd9a0541c8956a2383c4d8565f6f6675bc03a6. 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/TCACZ1717794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7ecde82a0ca40ebb4351f7070eac445d7bda33c66528a9a10d80be8e4b17d99. 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/TCACX1759397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61879d64fac4e0bf2526688baa642ac3892586c0011fe98900678c5682710344. 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/TCACX1759399.
Masterminds 2017 (feat. Olav Haust & Espa)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacbfd8e40b0b161d485b297fc2d2a699f32f86abd76a671e276f417fb57376bb. 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/TCACX1759403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1ff52ee650280fba886cf05ef36a0514d299853970e29ea440b631b6cc082f1. 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/TCACW1731071.
Imperators 2017 (feat. Olav Haust & D4r)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x797c61b23c9244fdf33e48b9ad65acf55f966c966063ed86093988b44292d169. 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/TCACW1731095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07cea3c6a22b11245bfccdc82b9247a04e342bde95951783b8b1da46d22db08e. 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/TCACT1692096.
Cosa Nostra 2017 (feat. Olav Haust & Espa)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cedb91e4bb40fc7e76e2a8a6e48e46539c7a0b8ef7d00ca52c504f06cb9c5ba. 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/TCACT1688971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41de55d3b659ff6abc07e6828f4839293e2ce01593d5d904f4cb3dfa3a7f9447. 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/TCACT1645523.
The Barricade 2017 (feat. Olav Haust & D4r)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15369b8843da2837b682e45c5fe484a9de5543f244375adc1a489e5c8573b2ac. 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/TCACT1611320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c79392a5e4372802113554e057ff9e313549e6dc0bab50448f7d6068a41db2c. 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/TCACS1620388.