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 0x59494f311281da658abaa6152b33280d3c64fd39517c57fc9bb64335810b521b. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/295383bc-88f2-49a3-9391-e9f0f827902f.json and https://artists.proofprofile.net/proofs/artist/295383bc-88f2-49a3-9391-e9f0f827902f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0xc06ac2270c80f9e9529f38bdf938dcea81c8fc9a819abbd317e8b7992fca71ea","isrc":"FRX872121893","name":"Garten Eden","registered_at":"2026-06-29T06:46:30Z","spotify_id":"779CZr1YttcoiXZhcSgZwL","type":"track"}
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc06ac2270c80f9e9529f38bdf938dcea81c8fc9a819abbd317e8b7992fca71ea. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/779CZr1YttcoiXZhcSgZwL.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/779CZr1YttcoiXZhcSgZwL.
{"copyright_id":"0xc06ac2270c80f9e9529f38bdf938dcea81c8fc9a819abbd317e8b7992fca71ea","isrc":"FRX872121893","name":"Garten Eden","registered_at":"2026-06-29T06:46:30Z","spotify_id":"3HvsVVB82acD8a9bMyV2fE","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc06ac2270c80f9e9529f38bdf938dcea81c8fc9a819abbd317e8b7992fca71ea. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3HvsVVB82acD8a9bMyV2fE.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/3HvsVVB82acD8a9bMyV2fE.
du kommst & du gehst - unter meiner bettdecke
aus meiner haut - unter meiner bettdecke
{"copyright_id":"0xe50f768e56a9a50ca32f7a7e1de274b305eeee7ca9ae6e1b2e2ab2edad3f1e65","isrc":"DGA062305256","name":"1 hertz","registered_at":"2026-06-29T14:20:27Z","spotify_id":"6hccfHiV0Sin0hAsmpJrRu","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe50f768e56a9a50ca32f7a7e1de274b305eeee7ca9ae6e1b2e2ab2edad3f1e65. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6hccfHiV0Sin0hAsmpJrRu.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/6hccfHiV0Sin0hAsmpJrRu.
{"copyright_id":"0x026eb3f7e765764dae44e3afd0221862aa5873e2ef93e9d10e55b28401d3400c","isrc":"FR59R2449822","name":"ich mag dich (und du mich auch)","registered_at":"2026-06-29T14:27:08Z","spotify_id":"4DyLhYMqcsIOkCEAlNvaHn","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x026eb3f7e765764dae44e3afd0221862aa5873e2ef93e9d10e55b28401d3400c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4DyLhYMqcsIOkCEAlNvaHn.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/4DyLhYMqcsIOkCEAlNvaHn.
rumpelstilzchen - Unter meiner bettdecke
ich mag dich (und du mich auch) [Tangoloft Live Session]
ich mag dich (und du mich auch) - Tangoloft Live Session
aus meiner haut - live (Releasekonzert im frannz Club, Berlin)