Kerstin Ott (born 17 January 1982 in West Berlin) is a German singer, songwriter, guitarist and DJ. She became known through the song "Die immer lacht" (English: She who always laughs), which was re-m
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 0xbfb670c7908613fa799313a58c5c58fd7d4421abc4bf23996d3b1af81d8a8ed2. 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/0dec28c6-efe1-4451-9673-f236272d1d3c.json and https://artists.proofprofile.net/proofs/artist/0dec28c6-efe1-4451-9673-f236272d1d3c.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 0x84700d30dc872bc655c7c5b8854120bd77033a9fbaca056d10efb9545ae6f489. 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/DEUM71807723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a990c97e734bdc3e8ddc1357339e39628d665251c01b03a8ea64c5f15603ef0. 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/DEUM72001481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ce5c24c2e41dd4ae23f41e1dc78fc64829134f1fc42bea9b02a8b8ba1c72276. 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/DEN061900661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb375fbdbc86fa6e42c4e77d5c7d909dcc74856c042508f28f1a274164ddb8fee. 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/DEY201500094.
Kontor Top Of The Clubs – Best Of 2021 Mix x Best Of 25 Years Kontor Records Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x142b08078b50e1056e62c13e9c786b729d6684f20b3feae5365faa8129dc6096. 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/DEN062101286.
Wegen Dir (Nachts wenn alles schläft) - Xtreme Sound Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6b291a3496a87075103865c4e1ad1e81852733d2db60f22db59476f98bc26a1. 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/DEUM71906776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cbbb25de4cd734ae1e220e70165d5c78781f1c62e6c5c9da22b23ec369bf67d. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/DEUM72201515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe37422008291fbae4a80bf69b21e6d35ba4fd1670c9fa8c4a0dccd2a9e3c5cc1. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/DEUM71802793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ce15e2562825ee26319534c04df0d9b4b79e32ff2a29729b2b1b32f9e7256bd. 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/DEUM72205595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36f0937e90774a939d18b83f56f2b75ffc39ab6c9fbb05704bf66211cbf65a8b. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/DEUM72201519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3cc0150de08dda4e7ade5caf50999039fb3ec8fbc008bbaddd862b4532f0755. 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/DEUM72402830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08875944133d75222c0317385b67001dd49129490cf5ecdbf34ceb2481a19d0a. 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/DEUQ72200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08875944133d75222c0317385b67001dd49129490cf5ecdbf34ceb2481a19d0a. 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/DEUQ72200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ce15e2562825ee26319534c04df0d9b4b79e32ff2a29729b2b1b32f9e7256bd. 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/DEUM72205595.
Die schönsten Liebeslieder zum Valentinstag
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12483292d9b44ae2ad0c7061a6f14ea66f24cb1ef34dc5c324f620d4334e8d85. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/DEUM71906866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8622e0d13c7d6b1d5bf59a0127ab960a8ca9a915eca32e43e6c8bde24b8db9d2. 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/DEUM72303933.