Jan Werner may refer to: Jan Werner Danielsen (1976–2006), Norwegian pop rock singer Jan Werner (athlete) (1946–2014), Polish athlete
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 0x69cf48049783cac5c22ab0ee5949d17cb481f20bb7f04bae4e15835b89981bc9. 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/a7621a05-8a2d-45bf-92ba-16e6e03c0203.json and https://artists.proofprofile.net/proofs/artist/a7621a05-8a2d-45bf-92ba-16e6e03c0203.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 0xff5d536bf906c0177bdbe9cd129fc043595c21fc24c02326de6753e75250a09d. 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/NOUM70500642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96574058198d8fed1f508207ca2a4c49ace8b00eff2482c19be2f5318cbffb85. 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/NOUM70800453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x672962853223ae00b755e9dea153040fc16c8d23cc9f547afdd799d56eac6f2b. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/NOACP9502010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x208186ea8d3be6fe2e2a379c4438b5efa1155d16c95558bcd232f66a891a1d2d. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/NOACP9502020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fdb961ee700199b15b0db1777e00647e127f6c00907ac3057b9c94c417a8f37. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T15:08:23Z), 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/NOACP9502040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf80c9bd5cf6f2937d3be524f0af3da17906fb06bf756d9007cce0feb1cc67bc4. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/NOACP9701011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe29ff7de07472e40048ef177916db4bd5c75d084701017882b9e08cfedb6f9da. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/NOACP9805010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc33f9776dd983381573f6e1e862387a9aba810f981ca94ee0eaedef65d825ff2. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/NOACP9805030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb196fb3bde78c3b37818d4e862fa8c893b9ef7a5a299fb98c2bbe026186aa830. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/NOAMM0300531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe659730d71c858abb20f61a6b45c19a6b989e4fde8a0a31060b1093a5d700edb. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/NOAMM0300532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d4ac6ee009827f73a003ac6ad9ef0f9e84300a2ab52295b6698de1f0954e180. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/NOAMM0300540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0a3453d237346342e55883eec0b11e4c9b233a02d40b47496397f8428ab7d98. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/NOUM70600548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89922b31a047ce7149543e27f18091610d35bfd4a5715438a9a87e88334a7719. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/NOUM70600551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b8381cf3a7077984de2e725fbb56e8bbf2ad3eac2ef2d5b92865b37cb79a584. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:49:24Z), 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/NOUM70600553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc194a6a7f52101d3e080c1f3d39cf42b27a3894e58b6ff592ea57784a49cb101. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/NOCTT0715010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x896a4035abd0581d1b7fc7a0ad2ef0f5febc8e9659f6d708c579aadc49d040ae. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/NOCTT0715080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92d375272e8f2851c8e90fe61744a53ebddd1ec9835dbb760ba10f7b38b895d3. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/NOCTT0715100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39a31727049c0a059f94aeca846be919f59b210fc0ada9cabe08c697d9066dd4. 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/NOAMM0006010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2413079acb1d3e13934f35e2ed2ff249f81dc305eeaab9aa0bad17276b4a4ea1. 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/NOUM71001553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x672962853223ae00b755e9dea153040fc16c8d23cc9f547afdd799d56eac6f2b. 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/NOACP9502010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x208186ea8d3be6fe2e2a379c4438b5efa1155d16c95558bcd232f66a891a1d2d. 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/NOACP9502020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf80c9bd5cf6f2937d3be524f0af3da17906fb06bf756d9007cce0feb1cc67bc4. 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/NOACP9701011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a734bb05001e93e51d05a2058ba082a5557036a05da64323e7b9a1633ec36e9. 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/NOUM71001551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe29ff7de07472e40048ef177916db4bd5c75d084701017882b9e08cfedb6f9da. 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/NOACP9805010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc33f9776dd983381573f6e1e862387a9aba810f981ca94ee0eaedef65d825ff2. 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/NOACP9805030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb196fb3bde78c3b37818d4e862fa8c893b9ef7a5a299fb98c2bbe026186aa830. 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/NOAMM0300531.