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 0x19b91d6ae3b84282b99fa82f28e5d1f71b6b198bc9b760cc1c25aa6e85446769. 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/020a1a7a-cd19-4f89-92ff-2be2d6685b83.json and https://artists.proofprofile.net/proofs/artist/020a1a7a-cd19-4f89-92ff-2be2d6685b83.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 0x72a89a48d9882f226aa1f37e55356d83fcb0b026e7face4544a5a1defa16fe0d. 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/NLF711303359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x435309ba780cc7fcfe86734fc208cdc85d363117bcc4f4ce95b4987bc11b2020. 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/NLF711303039.
Circa-Forever - Galen Behr & Orjan Nilsen Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf59f074d27ed1fd2a2306fd331c9f8c48fd932c6c035480f3e25d914f7e7ee01. 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/NLF710801684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf084eeaa93c848965b15b2e1d59359369e2afccbea3d5cda20554b8890caf48. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/NLF710800244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x828c2e0e94ce2d1f306301d3c052ba5f44098055b33d954b8feff0fef855b560. 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/NLF711303369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07c1d97a4d35c7a7162e08215208295fe9ecd6b2cb134ea293679532e0e58513. 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/NLF711303357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88cb8973e796288d73dc0e753c20e1bbc6420754b7f1b384da556721f0a1a3d3. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/NLF711303343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c914db464de310ba1f1d0afe2438fd82dde1e9ba5cb9e138ef76f166287cba2. Chain 2 (Bitcoin): anchored in block 958422 (2026-07-17T13:35:31Z), 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/NLF711907128.
Circa-Forever (Markus Schulz Down the Rabbit Hole Remix)
Circa-Forever - Markus Schulz Down the Rabbit Hole Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46e5ef1d7cc97d7abeba1689affd09e121732caf41be1192dfe60a803814beaf. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/NLF712306533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcee63668ce4f5a4d872982466568c251d6af9dcd648ac6b9739202a5e8a7c82. 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/NLF711500966.
Circa-Forever - Markus Schulz Down The Rabbit Hole Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5d105ab6618c9c776a80168dfe76bc480d3811d9dd9d9b16a935174b276b74b. 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/GBKQU2402382.
Circa-Forever (Mixed) - Markus Schulz Down the Rabbit Hole Remix
A State of Trance, Ibiza 2023 (Mixed by Armin van Buuren)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78498e21046547bcf052e33f4b27b43923516b27a0c73a2caac22b94fdf22fae. 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/NLF712306511.
Circa-Forever (Markus Schulz Down the Rabbit Hole Remix) - Mixed
In Search of Sunrise 18 (mixed by Markus Schulz, Matt Fax & Dennis Sheperd)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd21e5cf3ab0dc421c4f4892c643cfeb0943ab2d0c84e11f85fb364ca3db39e30. 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/NLD682202434.
Circa-Forever (GDJB Weekly Drive 2) - Markus Schulz Down the Rabbit Hole Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69bb0878aaebc824d7ad03988847f57b08ebb94e9ec25f7597206f65ada5531f. 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/NLD682303384.
Armada Lounge, Vol. 6 (The Best Downtempo Songs For Your Listening Pleasure)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x208f3f8b9ef939d9d6627bf043a472d4a22831f32b1363d25a0cb9ee5d741890. 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/NLF711306240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cee736c5e9dd3caf598a2ac048389254ec5e1b3b6391a58763adb5014d1b22f. 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/NLF711505070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcee63668ce4f5a4d872982466568c251d6af9dcd648ac6b9739202a5e8a7c82. 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/NLF711500966.
A State of Trance 650 - New Horizons (Unmixed)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x435309ba780cc7fcfe86734fc208cdc85d363117bcc4f4ce95b4987bc11b2020. 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/NLF711303039.
A State Of Trance 650 (Selected by Armin van Buuren, BT, Aly & Fila, Kyau & Albert and Omnia)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcee63668ce4f5a4d872982466568c251d6af9dcd648ac6b9739202a5e8a7c82. 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/NLF711500966.
Circa-Forever (Year in Review 2023) - Markus Schulz Down the Rabbit Hole Remix
Markus Schulz presents Year in Review 2023
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe16c6bcab1a5a0c3de4bf926098cab0fe59bdd79f8fd060ee9fcc2da2b127370. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/NLD682304286.
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