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 0x764a37ca5f5e0e47d4db3037e999a4069a3f968eb4fd969ce5ba4c63b27112a4. 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/8eddffd7-e00e-449a-9007-b2ce36f007c7.json and https://artists.proofprofile.net/proofs/artist/8eddffd7-e00e-449a-9007-b2ce36f007c7.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 0xf329e587eb214e99a598d9d4324e6e41a1fb731c1626029fb06b145fdc2cc3f5. Chain 2 (Bitcoin): anchored in block 960191 (2026-07-30T01:51:26Z), 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/GBVVQ2301007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x178c0bc7ae3bce28318d8736ab7f6ab28052d6de17afb8606d8b625dc0ae8bbb. 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/GBVVQ2301008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51c544db0e3df9f78f02ba4d498f05586d8b99571177285e5ad526419b502bdb. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GBVVQ2301139.
A State Of Trance 1000 - Celebration Mix (Mixed by Armin van Buuren)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x641b14d16c139e268bf2efa511bb32ce02a80aca3d34c0bc86f4c011fe4ffebd. 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/NLF712100466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17e7033e97d990bda66f484161132336f2c841484dd6ff79354bf019c6f5aab8. 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/NLF711102932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21af4012b5a95d7bc31503557b6c86d0b720a79d8b98f940dfa11ee9bf0bd540. 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/NLF711002163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59dbab2700e05a89f99b951de73e36816c0635c68221bd3c40e6b2b0a552da72. 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/NLF711311435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x326a4489568807a4c79a4ec61540074e692ea0573c3af58e0fc70edfc6ba1e41. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/NLF710500281.
A State of Trance 650 - New Horizons (Unmixed)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59dbab2700e05a89f99b951de73e36816c0635c68221bd3c40e6b2b0a552da72. 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/NLF711311435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fd258b09dc27ac798054c5f33b59bbdc27b0b0c64550ffeefe2533281360448. 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/NLF711400117.
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 0xaa5086bbb8e528d593fd135e35c02da3995dc7bd4b819b2e89ec53b6000782b0. 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/NLF710400193.
A State Of Trance Year Mix 2004 (Mixed) [Mixed by Armin van Buuren]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x260ef0334482c76e472f747619a13843418613fee5998864c6484007d08a3cc2. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/NLS241401443.
A State Of Trance Episode 182 (Year Mix 2004)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc976e4a7c919f3fcc27c94a9f405639279ea8c8bebbbc920e5edbc8bda9874c0. 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/NLF711313767.