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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6270dfb27642e11bfe21e8bf88aedd8b3501c5eb385a17c62f1fd48197ce2e21. 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/a8ac335b-16c9-4181-9e19-b5632af6b847.json and https://artists.proofprofile.net/proofs/artist/a8ac335b-16c9-4181-9e19-b5632af6b847.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e8f93ece17b085a1b5f0c8cded57bf81b9e9197bb5e2a80a6ce9c0bef1c68b8. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/NLF710903261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabfd5b65cf828aeed4f537ca6f5e3dbc2ed2ac3a8b2c6fe67219e64a8d537008. 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/NLF710903265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebb52a1b4f3571af1b21febeb1b0dff87477db25b9136a5235c296bc6851dbf6. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/NLF710500327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabb4327917a30e337b20ce4ce6d65959bf44f917c01d202598d4aaab8eeb8079. 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/NLF712102987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72b4cd4db0a16fac2007e73b9b4bc74ca30682b3392fd0dfab876ddcf216871e. 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/NLF711700325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb7f75b4e8bc96e551e095c15d6ab51a42f99c62ecb2e25515ec5aea6c62f69c. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/NLE711130502.
My Religion (Astuni & Manuel Le Saux Re-Lift)
A State Of Trance 500 (Selected by Armin van Buuren, Markus Schulz, Paul Oakenfold, Cosmic Gate & Andy Moor)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f409bd1cd153c23467e7c7a561e53d0ffb87f5a060b356d331b7cd2e62e49cb. 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/NLF711300555.
Magik Six Mixed By DJ Tiësto (Live in Amsterdam)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7c5bcc586d24f9e3dbd0a9c02cc7b1c98aecabc99ffdec0a76eb5bd4e215823. 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/NLD681802016.
A State Of Trance - Future Favorite Best Of 2012
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64f7d66f3ac5314dbdfd5297029e2bed0b2fafc08c5480dae06622a2edfaa62e. 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/NLE711243704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ca18d021e899c784559a6562ea196c230b665678265101b3e45775936b08e68. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/NLE711243705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x738f1b18ef1d7fbcf4fea8e2fd48724f31af45d5e01909ea932a4f0448e465d5. 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/NLF711202604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x377d4fde1b57b70c9a8ac77167eee51ab05688687282a7bffd9f0db724185282. 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/NLF711102762.
The Other Side of Time (Movement Edit) - Mixed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81b573176763317766999bd12c840b10a4cd87d142aa90736fc4cffdc1e67cdd. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/NLD682301366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f409bd1cd153c23467e7c7a561e53d0ffb87f5a060b356d331b7cd2e62e49cb. 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/NLF711300555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x668ecd778d215bd423db1b70418b1b9333435dc0ad0ef92a896bd11d83e28d97. 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/NLF711501273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x320ead0bf7392c279e0ce2adf245b4b58317686e8db13afd8c05596389275d7b. 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/GBKQU1155136.