Jansen may refer to: People Jansen (surname), a Dutch-South African surname, cognate of Johnson Places Jansen, Saskatchewan, Canada Jansen, Colorado, United States Jansen, Nebraska, United State
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 0xc51bf189823983331f9806a256163e8073b827bee88f1b6b9f8634fddb313287. 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/3599566b-9e3a-4b8f-a8d7-fea16f91da64.json and https://artists.proofprofile.net/proofs/artist/3599566b-9e3a-4b8f-a8d7-fea16f91da64.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 0x10bcf1dab2ebf6abbdbb3ebde3f107330948db1ff731b5837cc394bd5c49deaa. 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/BXNT62204672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8113188ac2fa4962f4a3f9fcfc9a3e024182b8f9644fc2f3c097371b257f189a. 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/BXNT62204699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dbe9a89a67c4a2b0631793d27a94d30f35dbf049cdb33950e48e9f44e0d0b76. 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/BXNT62204750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf12f70ce578f3126a76f63fc8079167d1911c8bfbac95c4a937f5fb7d7008a7b. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/BXNT62204781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49915d9ef10baee751053ff0baa7a342a7913a6cae44994d2cf18e7a2f731aac. 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/BXNT62204769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafbf2ef4a8a70a03d2fcf4a3f7ceeab02304c7a4b7899eee31ad68b2f93b1f91. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/BXNT62204914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf5026a4ff7382e2c49fc7df635043d01e83a0422b00b76726eb9e597b8d43e1. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/BXNT62204917.
Verificada no Rolê - Quintal do Trapiseiro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7674dc74e96de5ef13ea59ad156253ec3144290099f81db6e71bb3c1f0f15053. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/BXNT62204920.
Ministério da Saudade (Consultório da Sofrência)
Ministério da Saudade - Consultório da Sofrência, Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bb88e9f7f441a00ef53e2f6cf0abce4144d1b584fdd9c88e720ddcb50da8a85. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/BXNT62209225.
Papelzinho - Consultório da Sofrência, Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76c8c37b343f0680e45c5976fb433f480e2194bf2cc9069907697827e587d929. 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/BXNT62209216.
Outras Vidas (Consultório da Sofrência, Ao Vivo)
Atende Ai - Consultório da Sofrência, Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bc7f120fba3fa60b4d672b3ebc740913b9a03085d0e5c8ffffbd005e7274466. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/BXNT62209300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x711a4647183056759874ea6088035f2eb8b975f650552aa0994a9cbfeb1a0463. 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/BCWIJ2400001.
Vendedora de Amor (Vou Te Tirar Dessa Vida)
Verificada no Rolê (Quintal do Trapiseiro)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf12f70ce578f3126a76f63fc8079167d1911c8bfbac95c4a937f5fb7d7008a7b. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/BXNT62204781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10bcf1dab2ebf6abbdbb3ebde3f107330948db1ff731b5837cc394bd5c49deaa. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/BXNT62204672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0b992d103f41c33b9b3e6012d34ef028b3f7998535114c5b1115b663a80b170. 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/BXNT62205064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1451d2eed894c64567e8a11c798c123285fc441c1f6f55557652a0406264ccfa. 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/BXW0K2100051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e8dca9e08f81a6f8b87b86eab62444b50fb1aaa296699c8f69fd88ee090b939. 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/BXW0K2100052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f967ce16423f2b1826c6272e13d46508a0435c7232a2a4e552e69dda5491f80. 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/BXNT62205063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc15bb0072722f74f3041091a17f12de44c28389c88c8901f5a4703e8b3fb9ae7. 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/BXNT62205074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ee776b1a528697eb44cc94f3e6628e5cafb5de446a580e7161b793086bb5d66. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/BXNT62205073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd72ec5a532d0192a907e28a256fc385ecdb1f974837e73c60b1db8b70a7c1835. 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/QZNJW2178057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd39414767ddce208f05082596eaf8e9cb89abd096ebf1499ea6499a1de90c71. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/BXNT62205065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd96e585fbd541e643cc35c27c7087ef2c69a88212f8d1d80b1f022d7beb1282. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/BXNT62205070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaef456e3a8e1c685b8a40f06b3cd37e2c2d3134b69847974902a0023bded6641. 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/BXNT62205069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dd4564efb8757df8c886f39f30ca0d4ef4a2eda47c129807edea8648f4f3f32. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/BXNT62205068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdd4a93e44fac65390566e19c4d2af3bb507aa9eef6e03645d75217c4d31dcf7. 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/BXNT62205062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa71ec1d86371bb98eb1b445783af098dd7050ff9d53e8eb2a66c8388ef054c1b. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/BXNT62205075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd07955f85d698bab4c72b33f53be0066ff82d13faa4dba901f1ba31ae79b43f0. 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/BXNT62205067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x873252c54763271fd2cfac40cc36610b75f6d85706c5047a235401d7b7d3d63c. 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/BXNT62205066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f0c215ead1eb63914e85563490527043c5335b45adc9d53f40b4b5a30516718. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/BXNT62205061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b5daafa7598e26e6348ac56ef8033ac3e3a6c55a00fa56413ebb7d3d93098a3. 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/BXNT62205060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x249ffdbeb9fc91595a67bc17a1d631649a9dea8e1176bd5afc3743d5c39403eb. 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/BCWIJ2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03ab79eae2d1b69712c9952c46c59db3aec7da10fde404de091ad38a5259b9bf. 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/BXNT62500019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d1a7cc73775f1b602ba8bd540fa79784b818714ef5b9bcf44b800ea6372f0a6. 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/BXNT62500025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4860fa00cd1caf4359b4494865e0d5bbe031f5766525dc79243822a401d21fa. 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/BXNT62401937.