Vox Bona - Kammerchor der Kreuzkirche Bonn
{"copyright_id":"0x600d92a8a83f13dbaea3ffe120e508fe04a1bb39fbcff75b8e37afb820980260","name":"Vox Bona - Kammerchor der Kreuzkirche Bonn","registered_at":"2026-06-14T23:31:23Z","symbol":"NIM0611140","token_address":"0x082eab548ac3a56b24afad037a133906f62530df","type":"artist","uuid":"b5b8bd11-6f47-4c0c-bd35-cbc95a0aea4c"}
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 0x600d92a8a83f13dbaea3ffe120e508fe04a1bb39fbcff75b8e37afb820980260. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b5b8bd11-6f47-4c0c-bd35-cbc95a0aea4c.json and https://artists.proofprofile.net/proofs/artist/b5b8bd11-6f47-4c0c-bd35-cbc95a0aea4c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Moon - Night - Dream: Choral Music of the 19th & 20th Centuries
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 0x5fbd9cab2bfb1ede29de150e03be265f945d4df4a4cf6c6a0460c32590166856. 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/DEE210248302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1019c94a07ea7bbed05b5d0557389d51fb361e3692cf20241e58a1b4b3c9e74f. 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/DEE210248305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b2de5d922e3429e8387d2db7ec69ba60e2413f105ad3de58c15d8b6eb1d3045. 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/DEE210248312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa837c5106aeca9422dc048291fba293bbbd625e8901412f4c2a896d8ef2d8b01. 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/DEE210248315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37b7f7503158855e709bf0077921945a187c506440b2eaeb5465436bcc9a5223. 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/DEE210248301.
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 0x6d71b20b8ec629c28c0eb1dcb0671390647e9f8388e64bf1579db7f3afa0b18e. 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/DEE210248309.