thumb|Ntjam Rosie at International Jazz Festival Middelburg 2013 Ntjam Rosie, born as Rosie Boei (March 18, 1983, in Sonkoe, Cameroon), is a Dutch-Cameroonian singer/songwriter from Rotterdam, The Net
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 0x65e36ca31345013cc7cdc85a256f745846635f46ccfce2654a4b0b7bd0ec549c. 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/2a50eabc-d4cc-417a-84bf-f4eebb94d44f.json and https://artists.proofprofile.net/proofs/artist/2a50eabc-d4cc-417a-84bf-f4eebb94d44f.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 0x70fe714074625d6e5289b08ab7434b53e4c44985cf24511b316a602427db5366. 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/NLZ542001162.
Sailing Out (Slow Motion & Gabe Extended Remix)
Anthem (feat. Ntjam Rosie) - Enoo Napa Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85633ff3f5453022844f6fad2788de43b94a925f7f1a30c3271aee955b266cd8. 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/USNRS2342831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f79a83c9e8184369eebd4c5f753cb1b7a24d63714cddf653809be26efe9e6ee. 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/NLNR92200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0237216f56b76dd2d4988669a66c226ffafa945ab26c5c5a33d450089310d128. 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/NLNR92200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed564ab2cfd7aad70073b7e2a1c8cf4cce5d7e23a546dbe206957a9a7856492c. 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/NLNR92100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bcb4a98c29ae959b581e7222bb6eb928ceb1368079d7bc0605a474311087dc3. 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/NLNR91900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b803c933fb5300eb44ed5d3e0b03a5776ba454c138c357457774c656ea15fab. 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/NLNR91900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d83d19da8424602bd265146f5366a760053929af02f28548a954a9c6e3e691a. 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/NLNR91700005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03ed281555c8b12a30f5d6013c90cab39d580ea09af10a3b40a3c96f77e857cb. 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/NLNR91300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b4ddd2ca9de4057d8fd05c3e2f2140cb2e7c2867da2257c30ea9f30edfc952b. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/NLNR91000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01e857ece580520ceeefe41395c259cbc8d6734d08ebe70a2eff8c6e8717e42c. 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/NLNR91000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aa73eeb672b3a1572c5f9553620d57a5e0810d3fd1ec3db868b05e543983261. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/NLNR91000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29e3c75c91f70a792bf07a48e950ed2f2a78e16d4fa983abf9c91e7ab78ab664. 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/NLNR91000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x309190ecee15dadc2e81ad7566abfc4f0fd3f39e64d017c1a6ca8dd4ac903611. 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/NLNR91000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x003d325252ff5e2873787ecc426199c958f5ca941b380746240f480746e20d77. 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/NLMN12400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a3d0150c427182290178d6554dd45435ea28fd1c8e125238b99eaef41941b82. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/DEEC33501206.
Weird Nightmare (Live at Transition Festival)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb97cf92c07fe20fe2637c5ef417cb066405d7c88797f84e60c00a2d2c1e4e0c2. 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/DESW62000022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bcb4a98c29ae959b581e7222bb6eb928ceb1368079d7bc0605a474311087dc3. 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/NLNR91900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa054a29e90ab08f571029f6873c046f362610a711a1f9021f9d959d7e0c3bb39. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/NLSB72100336.
Metropole Studio Sessions: Dutch Jazz Jam II (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4817af9b079919ab448e1e6996b7648cc5c924798b732cbba4bc2915ce7df06. 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/NLT2H2200655.