Bonn, () officially the Federal City of Bonn, () is a federal city in the German state of North Rhine-Westphalia, located on the banks of the Rhine. With a population exceeding 300,000, it lies about
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 0x6843f3537a42165fd28ac66e4ebca8c78915204b6eeb819c2ec33ae45e918baa. 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/97f71aa6-3a9d-4e4e-91c6-65ba6ab1d0a1.json and https://artists.proofprofile.net/proofs/artist/97f71aa6-3a9d-4e4e-91c6-65ba6ab1d0a1.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 0x87b74f36fae4a9c3bc155807ce58be783d12f43c2a79dde509d1bd5f68d0e3b1. 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/DECE72301698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71d6971001d0f4a6bca2981062a9e3717bac2fdf154092139556d2e7dbeb8528. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/SE5R71900206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37777df2d6ad2536248fc5afe35277e0d73a71bc6122c2411b5b86ddf9c2bb8c. 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/SE5R71900208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x564dc3d6dc1ea6cc71fc5f5b30d76304b40afe95305416427cf8b30ddd9b1b46. 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/NL8RL2438458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x564dc3d6dc1ea6cc71fc5f5b30d76304b40afe95305416427cf8b30ddd9b1b46. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/NL8RL2438458.
A State of Trance 2025 - TRANSFORMATION (The Official Album)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x564dc3d6dc1ea6cc71fc5f5b30d76304b40afe95305416427cf8b30ddd9b1b46. 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/NL8RL2438458.
Tomorrowland Music - The Adscendo Singles
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87b74f36fae4a9c3bc155807ce58be783d12f43c2a79dde509d1bd5f68d0e3b1. 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/DECE72301698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x564dc3d6dc1ea6cc71fc5f5b30d76304b40afe95305416427cf8b30ddd9b1b46. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NL8RL2438458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87b74f36fae4a9c3bc155807ce58be783d12f43c2a79dde509d1bd5f68d0e3b1. 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/DECE72301698.
The Feeling - Lost Frequencies & Andromedik Deluxe Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6eea6cf498ab8d2e8b3f196b3ce02c6a2b69fc6514b9a08b4313d59f44978c8. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BEHP42300022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd55d96dbaf21e3c0b8f1936bab342834868284d92ab83430cb9a8a62d401e169. 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/BEHP42300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6eea6cf498ab8d2e8b3f196b3ce02c6a2b69fc6514b9a08b4313d59f44978c8. 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/BEHP42300022.
The Feeling - The Avener & Adam Trigger Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9593749d68a31bca5cc323328c37e78c06d11e3fef6116aec1967565e1b5680f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BEHP42300023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4e1ffd643fed0e3717e2bae4aa7e61e84889c7bd9b34cba75ca353b383042bf. 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/BEHP42300024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x608b2a7db75cef4e7f70925119d54b72be25263222b3de5362550f8077dc59e7. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/DEUM72402720.
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