thumb | right | alt=Ylva Karlsson, 2019 | Ylva Karlsson, 2019 Ylva is a Swedish female given name meaning "she-wolf". It is the feminine form of the masculine given name Ulf. The name is also used in
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 0x137bcf126c2296c178f6b93400a3db9b0c1f10113167ee5cb32607500d79893c. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3ade862e-5df0-4966-9b39-641417e47a5a.json and https://artists.proofprofile.net/proofs/artist/3ade862e-5df0-4966-9b39-641417e47a5a.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 0x46af83dec2ef2db30c1dc12a7baa0fcbae3b53960133cbd28744f1b39bbec247. 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/NOUM72100209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5e581f1d0d88dda9fd516a86adcaac115c1a0c010cdda42d352a6e028382bd5. 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/NOUM71602691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe50b830586332af719fe5c6ec392ecfd0a3c9c8ae4ae868befb4899d4d47a6b0. 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/NOUM71602619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82336fba55d103040285e3208ae9fa87a3c230bedcc117c113ac22d9455d3422. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NOHDL2508010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d063f5015f0d8102b2645adc8d64af3deac2c8ed7c1dc88c530df572b58eb73. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NOAAC2400085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd06146265a2927a4e5693914fab2c98ef06a3fc2f9bace100d003e755c3df666. 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/NOAAC2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47e706bf1c509e8b2a4df06a0025953d7e48587e03d323450702f0cf9ad62eb6. 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/NOAAC2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4207bc8da70c74d1137ff4c7c5eb7a299e8718ee443a583a8f4c10bbd787d691. 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/NOAAC2300021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c3c3f7f7ae55fc40ebd5a0e5a3ce1b03abf56837dbe87a60792e5d0839aab22. 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/NOAAC2300022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1863ed85fdc8d7905d2d0fd2bac17438d17aa1ca784679b01caef4a27c77b46. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NOUM72100045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0219b60701504bc714c574c5751c93ce699308cab69287df3aae7e49c1e6ab7d. 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/NOUM72100059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cca9a2ab7c866dc5d93ee3c0855ad37e552cc11ce7f18a61a4a5f28f44f8471. 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/USWD12099887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca7e810911f700ebbcc4f7ca52569bea8bc3559950fdb937e411689735cf096f. 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/NOUM71700273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd294c8854e303bfec6a8c58330337c9efd2a192acdda8359adc6859edf4c4ebe. 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/NOUM71700121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e9d4cd08dae9ee7346bdfb7ee97afa1348ce0427523a66e7e6f15d542fe4237. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DKUM71400133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a65510edf7e60d664c7ea0337a1aeac44d3d33c5f7003f22fe835478f933ded. 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/DKUM71700234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe36ae79943f68986cf92f6432045d4d3cd887f9987df84c5ec2a18ce7be35c1f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DKUM71700410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe56e370dd43f24423a64f38c08b78b630a829e2b5bfe9e09102e1781b8548bfa. 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/DKUM71700039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ca6041b181e6cf2a8486305a103260388f2e63e8ab47d22ac29764cc57f8b77. 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/NOUM71602734.