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 0x3a352725739737a4c7672a8ef254d577e4c67ef09f4009235d0be00478b0c008. 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/1063dc8b-9040-41c6-8892-bd39f1f2b0cd.json and https://artists.proofprofile.net/proofs/artist/1063dc8b-9040-41c6-8892-bd39f1f2b0cd.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 0xb9c3f0893d2a9b868ce148ba65a5f91c583f390a17444398211a91c6d11d76d1. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/GBLAZ1300432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b1c277021b76e17e45ee86fef53d2f3071ec687d6e28ba72bb9728da4d9ad6b. 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/GBLAZ1300435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x514386213cecd12c14e95275e5d3d823d949c2d3cccb0fb56a401e46608e39fd. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GBLAZ1300437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x020a9fbcd69b84324e48ead9e3d2c47743c9b169590d2ef1f4055fde2ecf6f03. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GBLAZ1300440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2619aee5ec88f2eb8236c2556572ce0370d57dfa7eded66c68537a54d9be6f86. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T20:08:05Z), 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/GBLAZ1300438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x117ecef9daeefcc096100589186d12c99d47e41e62aa05abaee82f9c303c1f1e. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/GBLAZ1400452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd9d2ed454ee965b17481e528a4b0cebf3468bf18448b3e4988570bb83c68031. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/GBLAZ1500558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa96d7f071b83c1fb236eccec4f4cd7f7bf86a854b0bd3d496106a3f74fc74e18. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/GBLAZ1500561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x409e56b43efccb12b3cd0476216b6f555d76df04151d040d91d82d9418da1079. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GBLAZ1500564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5ffee4f275fc02a91bf688f411c1baa0c2d1fe287cdd27edd4d1a1793fc691a. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/GBLAZ1500567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc6a277b93034a2573182ee1850f601144d4adfd3f42244758135c4aa346f6d1. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/GBLAZ1500568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cf6d49ed27367a08e818bb915ea0708452c2a586c3ac74d63e6c6bc81b03a2b. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:41:58Z), 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/GBLAZ1701055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63617a5bc97b72cbe616ee4f305196bebe5a13901b4ea116f71f14f83da11ddd. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/GBLAZ1701053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb169d0aac5a2fcd6b0cf8d187cbe032baf259dbdd81831cfcaa9c47ad8059d94. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GBLAZ1701057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe9f94f40ff8589e1e1565b03fb2fd3fab72d43fc36bf29692cd2748f267ecc4. 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/GBLAZ1701058.
Narben (Hamburger Küchensessions) [Akustik]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48bea2a27012318c02fb041e32ff7dc8edaa789cdaa83356f8e50fb5f841b516. 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/DEC831900001.