Floor Jansen (; born 21 February 1981) is a Dutch singer. She is the third and current lead vocalist of Finnish symphonic metal band Nightwish. Jansen was the lead vocalist of symphonic metal band Af
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 0x8a25e6f9b9d5497a9c045afd2a4c841b88c5e0b5638391c2af8f8b864a021827. 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/6f3934f8-e0e7-4870-80c1-67b6ade3b377.json and https://artists.proofprofile.net/proofs/artist/6f3934f8-e0e7-4870-80c1-67b6ade3b377.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Floor Jansen bei Sing meinen Song, Vol. 9
Zu schnell vorbei (aus "Sing meinen Song, Vol. 9")
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 0x810362d95422e259a9832d1e88a56d73eb35181ebb3a95da5d62cafc15514199. 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/DETO32200038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72390445050e03a6d4e6fc8a849f7db3024bc4b35062180605a908c1c535871e. 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/DETO32200044.
FREUNDE (aus "Sing meinen Song, Vol. 9")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ec8fa08dba19c94bc7576f369dc3a8222dd53111bfe9a82c94b9882d57de87a. 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/DETO32200046.
Call You Home (aus "Sing meinen Song, Vol. 9")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x240b93f69ebc588d25133e3ae8501dab47bb7253f45b1588f5a6e5dcf314e67c. 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/DETO32200056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94e952f211e58a0d88bc3575e4d503b219d59771c25d2cea48072fbcec8756b7. 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/DETO32200059.
Anfassen (aus "Sing meinen Song, Vol. 9")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b77ae6770728aae79d5d64ec90cd06ebe52acfca68b6aacc7542e86c3ee881f. 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/DETO32200071.
Amaranth (aus "Sing meinen Song, Vol. 9")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b8703acc2a29848cde3f5d4b135c16641d908d8badc12afd4f33f105e8e8714. 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/DETO32200077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe78231edef2f6564805ebfe642be2822a5389bcaaf3de210be45bef82f4cf216. 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/DETO32200081.
Sing meinen Song - Das Tauschkonzert, Vol. 9
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72390445050e03a6d4e6fc8a849f7db3024bc4b35062180605a908c1c535871e. 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/DETO32200044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b8703acc2a29848cde3f5d4b135c16641d908d8badc12afd4f33f105e8e8714. 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/DETO32200077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ec8fa08dba19c94bc7576f369dc3a8222dd53111bfe9a82c94b9882d57de87a. 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/DETO32200046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b77ae6770728aae79d5d64ec90cd06ebe52acfca68b6aacc7542e86c3ee881f. 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/DETO32200071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x810362d95422e259a9832d1e88a56d73eb35181ebb3a95da5d62cafc15514199. 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/DETO32200038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe78231edef2f6564805ebfe642be2822a5389bcaaf3de210be45bef82f4cf216. 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/DETO32200081.
Kelvin Jones bei Sing meinen Song, Vol. 9
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe78231edef2f6564805ebfe642be2822a5389bcaaf3de210be45bef82f4cf216. 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/DETO32200081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc71c671568ef3e4371958f9c3a7eb968f96f84d1875d2d86166825ba61a99380. 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/DEU601606398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x159ff2b884f151bfb15d4a6411d3aa7f61d5692c32098d88603b134642a56b45. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/DEU601606401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33d8dc59d2d0c448a9294f2f6ab1136297eeff526fda113c8e9a24aec3070c9e. 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/DED831000675.