Eva Kruse (born 16 October 1978) is a German jazz musician (upright bass, bass guitar) and composer. Biography Kruse was raised in Brunsbek in Schleswig-Holstein. In her childhood and youth, she re
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 0x7c7da552b6d2561dabeecae08891ecc381c0f1f74f40cef206aee4fe9bbe0158. Chain 2 (Bitcoin): anchored in block 953791 (2026-06-15T13:40:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/de87e18c-df82-48ed-a2d9-a03e3db75cf4.json and https://artists.proofprofile.net/proofs/artist/de87e18c-df82-48ed-a2d9-a03e3db75cf4.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 0xb692841e4808c56d1dace9b80caff752fdcbda39bbbe121943a7034b58e14e72. 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/SEBAA2000401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfcbee0072da6d0e1c0bc160a9c6fc3843fe66ac8684549d9b6bbc4d75a40f2b. 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/SEBAA2000402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x736e7e1a7bf0697ec74afd7b6e35c760e2dff97355e8dc1a379cb15d6f785b58. 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/SEBAA2000403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9405b5bb44d9c64966e9ab09c04c7e50136e4398fc844b88b4c335c225667cd. 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/SEBAA2000404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37f47a7a862a194bf54a403c705a234a1eca93f572ffb6c87628588c1b6d6ecc. 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/SEBAA2000405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95ffc7a6360b4f5b7f7c93d89d4652ed6bba7f9f5959fbda1590e29242cd1036. 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/SEBAA2000406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aceee5b12272f92ae406b433e0da92bc36d726d6d253fdc31447fd9ec97ef13. 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/SEBAA2000407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffa5ae1a38118f1bc0e4c98583a6c77709598565f665c21d85d9409dfd79ffa4. 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/SEBAA2000408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdae62b92b09a91097c23af0e28298663401c58c45e7a573c0ff2b1c306be419d. 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/SEVOZ1600202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2134b101db7edd5132aad1100f0b6279b47cb5c5699f4ca27a9695b1f8f01f08. 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/SEVOZ1600203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07680bc4db20274d4563126fe8546dc1193991f1827068e997f0a0ac934c558e. 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/SEVOZ1600204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2435c51acd624e2471e169dbc386fa92d740a87aa50e9ab7de92cd4303ca2b78. 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/SEVOZ1600205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fd6d5133b19ba741c7cf670ff9728311a16e2cf55a950b746017a29f73ebb0e. 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/SEVOZ1600206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1b6fcfa673653c619a931e6584ffdfbc906d048ad7a8d50d6a721035d527f5a. 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/SEVOZ1600208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dcc8c8d738f70a3eaf2d63df4baad59fab901f7832ab836e1e9f96d61f27709. 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/SEVOZ1600209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf30c45bcb14aecbd3346b4f2ee7c0d8d5d9bd3e177916c35a879eafdda9b1281. 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/SEVOZ1600210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b85ab34f2699211d563bbcfb54b517359aa31dc82e1e4242374cb1c6523f4c7. 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/SEVOZ1600211.