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 0x30ec15fd38a7eb1ac3e84663cc02ed512d01907d71b39bf1b2e3a529f98eb2d1. 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/bc87cdf2-336b-4a24-bf92-aaba90315039.json and https://artists.proofprofile.net/proofs/artist/bc87cdf2-336b-4a24-bf92-aaba90315039.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 0xa81ee5dc2304d5f3a8e8420a9852f357119f6652d5f8659bf8d882ee431df031. 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/GX8LE2305843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cb8664177e1a49f815256ab3f45f0ecaac43e4f0a7f5c3022cc1daa14057d3b. 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/NLF712405026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63549c35633bbd12a85b5f6fd02390e508dc0fe2bb58890df54f197ed6aac081. 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/NLQ882400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63eee06937a75e2f717edaffa7504c608dc41cd9b11f4bf8765fd8ad2fc12a56. 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/NLQ882300040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d0896728901df0e4b4b9d0234a52e084be5ce3d47938bde7d9893bfd2781c05. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/NLQ882300031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x102ab3f7c90a780dee04533e0e86734f3a0d62eff92fc7212320800ffcc29c21. 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/NLQ882300024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa572bf7bb281dafc5faedd26a187c6e543ead40ace3ee4234dc4ef9cbe543b4b. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/NLQ882300018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15d08db069cedfcb995bb797ff5960460820e6cac31785e0add022ea722cb7eb. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/NLQ882300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3666e656bcfdd69066b04a8675099679f6bcf50a12ce5936ef2ec98961a6301. 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/QMDA62238703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8edc0dd9b0ef1a1ddcc204cef3ecd45848d7e9be6036a4dbc2f36411c8a4625. 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/QM4TX2253214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7d3adb3610ffd84c73a89bcffe5aebb171736a642eb7b9fc1f20fe3af813ab3. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/QM6N22142003.
ASOT 1176 - A State of Trance Episode 1176 [Including Live at A State of Trance - Celebration Weekend (Saturday | Reflexion Set) [Highlights]]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x914ee2ba27f32941bc963fd9416598a4e29cbbf03e4072f95c5feac949dd3c85. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/NLF712405581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6163d5b3f1f403b85110d7a3a7cd89df6a3d94364445426a07389f6bd298cbe. 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/DEA622100911.
ASOT 1201 - A State of Trance Episode 1201 [Including Universal Religion Chapter 7 (Mixed by Armin van Buuren) [Recorded Live at Privilege, Ibiza]]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd82f4f9886ef1156bcd5228b041223556790de7a5eb7ba1f22390b14e48af1e2. 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/NLF712410025.