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
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70fe714074625d6e5289b08ab7434b53e4c44985cf24511b316a602427db5366. 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/NLZ542001162.
Sailing Out (Slow Motion & Gabe Extended Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35b024bd15cddd2dae7c9359ffe0a7295e6a3e15ea92b5dbd787e7340cd73bc2. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USNRS2342830.
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 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/NLNR92200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb51dd7546af47e3362bf42e8d1dc62a6dfc8eac750bfe29447162f186f4673d3. 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/NLNR92200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5be3c85e104f89afa46912ce0cbc24421963bb984919a723e0b9107fb4c70fe. 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/NLNR92200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e66f26db1353392fb97f8a7504714984701e8125f6d52dbe5cebfc5946c0530. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NLNR92200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0237216f56b76dd2d4988669a66c226ffafa945ab26c5c5a33d450089310d128. 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/NLNR92200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed564ab2cfd7aad70073b7e2a1c8cf4cce5d7e23a546dbe206957a9a7856492c. 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/NLNR92100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a8bab279d3bc95f39532da6d371031090c5fb74f04a249df94948364daa809c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NLNR92100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bcb4a98c29ae959b581e7222bb6eb928ceb1368079d7bc0605a474311087dc3. 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/NLNR91900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x809ef21a9b02ff79e018e7526b4045c1d4d67bf2615a1760b6292bcc852508fe. 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/NLNR91900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b803c933fb5300eb44ed5d3e0b03a5776ba454c138c357457774c656ea15fab. 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/NLNR91900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf7f50aaaa0311fa039e99a06d0e8ed1623d2ab097985be2f178809b3a530104. 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/NLNR91900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d83d19da8424602bd265146f5366a760053929af02f28548a954a9c6e3e691a. 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/NLNR91700005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4b5c021e7e6882556685f86e431f8b319a2b001803c35d42b78bbc735ff0888. 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/NLNR91700010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a4a17a300a5516cca36dacf243fe7025cf3a845c523271f4d2a5224e9d73095. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NLNR91700014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45a5cfef988d491441408f48384cdefdb214ce31412f1b5d62d90fe9d39d2a6d. 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/NLNR91700016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55be8c59701583b09eff9b2bdafafe31c1539fdf198342d598a93cbedf2f4975. 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/NLNR91700019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8adac88e4a950fa86c4564a2ca5e526a1a1daabf812ed36608bf36015e3cc6d2. 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/NLNR91400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05951fe72eed68e362e8ad4125ab2ad3af5bb211a64b6ac8ab55267bee6d8ee6. 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/NLNR91400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57cde18389bc63d18f85d1f77cf824a64580f7877dfdd7d80391e6448a8cbaaa. 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/NLNR91400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03ed281555c8b12a30f5d6013c90cab39d580ea09af10a3b40a3c96f77e857cb. 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/NLNR91300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01e857ece580520ceeefe41395c259cbc8d6734d08ebe70a2eff8c6e8717e42c. 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/NLNR91000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aa73eeb672b3a1572c5f9553620d57a5e0810d3fd1ec3db868b05e543983261. 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/NLNR91000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29e3c75c91f70a792bf07a48e950ed2f2a78e16d4fa983abf9c91e7ab78ab664. 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/NLNR91000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8a05f331eed265a799175e3bad7d83d8dca9bca959658de970a6d910b425853. 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/NLNR91000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x309190ecee15dadc2e81ad7566abfc4f0fd3f39e64d017c1a6ca8dd4ac903611. 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/NLNR91000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe97e034d1a055f87bcea218a17cf701062563accc13c64e4c4d4a8169f0044c2. 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/NLNR91000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb529031aa63ed74e535c41d069f162949d31ccee7e64a07f60da0705894dd8f6. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NLNR91000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbc7e592a4fd1c1f29d26712e3946e2b6912efb17e36c414e17af0613be42225. 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/NLMN12400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x003d325252ff5e2873787ecc426199c958f5ca941b380746240f480746e20d77. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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 957820 (2026-07-13T07:54:01Z), 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.
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.
Weird Nightmare (Live at Transition Festival)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb97cf92c07fe20fe2637c5ef417cb066405d7c88797f84e60c00a2d2c1e4e0c2. 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/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.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aa1665edab858d12adeb2269b413ec37a286f822faafbea19c8add93605aecf. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NLSB72100499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84f91ac62d3f29de70207e3fb6b2931dc9fda88d285d0951bf6e7f857603a0a0. 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/NLSB72200680.
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.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd5924ef033a31afefa0bad33f04e516e3fd08230be2553ff88f00d5bcfb7896. 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/NLC741700012.