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 0x3e03f14f543e4381627bcd2a16aebefed2eaa6bd8d0abaec87842dedc839e031. 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/963bebe4-22d3-4d8d-ba27-81bf2fd36052.json and https://artists.proofprofile.net/proofs/artist/963bebe4-22d3-4d8d-ba27-81bf2fd36052.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 0x4d80b8ba6d0615c73ad9ee6b62311eec6f233118eba55afbdf6fc0c5934c5499. 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/NLCY30802486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0592e18fc3e9041d94a5fab1485acc7cfc2abf37f1dd5ce45c640426f319619. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:34:21Z), 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/NLCY30800350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc89a85e90370c7216e8cc0cd98d91bb1c8fdafb1bca407094ce1ea44014b0f9. 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/NLC731410356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20bd90b66840db43b421dc65c54b933fe22196854993d9586a4773b3e21f9cb8. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/NLC731600102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd67fd111290dfe8f92792cd941123e5e469636757f9f74c74581cb57918f0d6d. 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/NLC731500161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x166bd624671ed6203c2ea4df3d84c00dc07ed9725da3d5dba57759cbbfbe86a2. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/NLC731800046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x217387854ac2d710f70ebb3725ea443df3021ca9a4df5073b7f527a09a5ccebe. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:41:03Z), 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/NLC731500207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7b4ecc75d216e4a8be5b063c39c3880d0e93a1f30faddd4aca30abc2be4eebd. 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/NLC731500289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x415321907f8dfbcb4dbeaf6e5dc90ea6c8ef9fcd8b6782162500b9b8c4720489. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/NLC731500212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc833f0b6f957ab78057ce156b34f94fb0a7811fdb5967f2d5dd8a5e35d786287. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/NLC731500089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77dc4dab6736c431581360c065f2263d35d22e76973425c3f944ceec160e9af9. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/NLC731600077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcba7be98a5f5efe5fff13a8c25751c9ed20a1522488f975676c99188adff6d31. 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/NLC731600175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe63b65b323708abf35ead96065210d6282f51c46a8a23ab4df149d9c7afc9b7. 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/NLC731600101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6848b851b7366041685bb91710563ad761dafe384c52592273cdc63d607cda77. 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/NLC731500219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6726b094e60eab761e45b085d922b9f1123cb9c371a073238a687523c7cd532f. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/NLC731900486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75dcdea44c5da4642448f09d9fa8831bf425a3f00a09591e4e538d0456111304. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:41:27Z), 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/NLC732000354.
Lost Myself In You (Katrin's World Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa9d21e20c80903c5d09f86b04654c29a352b6ac8f12a34e1c1568672430e1d9. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/NLC732200633.
Nasty (Jonas Steur, ReLocate & Simon Anthony Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3257b3b4920be687fd865b7b36e92735f9a3b4a837528cd0819c598edac0a24f. 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/NLC732400601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48b270df5a287c2c36afdc7dccca7ae73ab9b07d53afa3d7ae984539e3dc2255. 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/NLE712400722.
In Search of Sunrise 19 (mixed by Markus Schulz, Ilan Bluestone & Daniel Wanrooy)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f7830c5504a3087c0b904549bf21485a8e2f7abb2335ad2e01fd3c52fc3cab1. 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/NLD682303548.
Beautiful (VONYC Sessions 800) - Re:Locate Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe01acc5ba34d4e008d3040b7a4ef161c44d0d2002bc69090991a4b2d2450e792. 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/DEQ692200384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f104cf9daca92c484477b0fc97f08615ee1f69de7f099829160d79aeff6a1d3. 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/NLE710520842.
In Search of Sunrise 4 Mixed by Tiësto (Latin America)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d48d28aebf3769135d97df44af996d1aeb769265f2b524cd8b7f656269244d7. 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/NLD681802916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04ddf8a8a28f940b54664b6bc522e79aec7868a2efe886aed532443b91814e76. 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/NLE711900539.