Natasja is a given name, and may refer to: Natasja Andreasen (born 2000), Danish handball player Natasja Crone Back, Danish journalist Natasja Saad (1974–2007), Danish rapper, deejay, and singer Nat
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 0x749daea7f655a27b423b96dabacee719f795621cac533de082802ff36c79fb40. 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/63653413-17c1-44c4-a035-2bc7b3c8a071.json and https://artists.proofprofile.net/proofs/artist/63653413-17c1-44c4-a035-2bc7b3c8a071.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Til Banken (Natasja X Tessa X Karen Mukupa)
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 0x7bb733ffba37a1bb7a3e6fd85195f0a2cbfa216fffc54be28b3b96b8f0777502. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DKUM72000384.
Calabria 2007 (feat. Natasja) - Radio Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44c11f8d71cc6ed28b4933f02ce7228ffc14ef3b06dc291c99820e4cb0c0eed9. 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/DKEW50600106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73249b2729c5a99bd413134317c171d8edd71113016d234795977e31dbc66dae. 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/DKADG0700124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60798526f29a0e264e228b7ef0d9ed22dde0d866f97df4d8b503a21bd199deaf. 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/DKADG0700118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x361108a912759c92661d7bb9063a2aca9b13c61fd39ef1d56dcf0f45b9e98679. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/DKADG0700122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8335f763473d67ba5ed241e6ada10157367c753b0793df8177efaba73a2ba49. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/DKADG0700116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dee8f57e010ae4131d0915a774e840d086603df407a03bc909d9b5b98f9de79. 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/DKADG0700117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2318d25a4ff566d0d40e336749c08742eb47cf8fae4bc4829b832d2b23c4ab50. 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/QM4TX2421655.
Come ina de Dance (feat. Natasja & Karen Mukupa)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a467e275f38267e777513dbfa0c1e68bd0ad6a84c5cef07af17fb7caba84f80. 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/SEVJH1401401.
Colors of My Mind (feat. Natasja & Karen Mukupa)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70b6289c128f2521cc7393cb812484d4e1ba900b702514236fe69a35bcd4fa2c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/SEVJH1401301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb97771bfeef5142865473479d23214ab7d03a3b2b863964233a2171156cd43dd. 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/DKBR21300801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc400c876daa7183835c84c39f8e826e201b132af3548c77a5693440b99d9d83c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DKBR21300802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bf6c5c5c863dfc3404aa5d7261aa7d7d2e7a8b051e3cc593e564baaed0ba46e. 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/DKBR21300803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a36904b5a265faa6f669e0a7ae0509741f5ce24c49e361b12c4db4590f8630e. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/DKCC20900117.
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