1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x4729b16ff212d215e413d36a766bbb43722c24cfb52d60a8c04fb9690cedbe5d. Chain 2 (Bitcoin): anchored in block 953886 (2026-06-16T04:37:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0be69473-3c13-41b9-bbb5-19567fff9e05.json and https://artists.proofprofile.net/proofs/artist/0be69473-3c13-41b9-bbb5-19567fff9e05.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Lieder singen: Sehnsucht nach dem Frühling
Lieder singen: Playback Sehnsucht nach dem Frühling
Lieder singen: Playback Nel cor piu non mi sento
Vorbereitung und Theorie: Mund und Zunge
Vorbereitung und Theorie: Text und Bedeutung
Lieder singen: Playback Funiculi, Funicula
Lieder singen: Playback Lord of the Dance
Lieder singen: When the Saints go marchin in
Lieder singen: Playback When the Saints go marchin in
Vorbereitung und Theorie: Körperspannung
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 → block OTSBitcoinBlock must exist at that height 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 0x083cf3503fff627a2ab261d7d2965da556057196f1c993e9fff2dcc597b19344. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/CH7811815452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1de6d8e1bbb94f581c2352ac8650763d5200327074787d39b98a088235f1f283. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/CH7811815453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc13f7adcb60968fb14b6834cc78a29084a9e097b459d85e681e909da3e9ceb6. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/CH7811815456.
Lieder singen: Playback Down by the riverside