Karina Rykman (born Karina Rajchman) is an indie/jam rock singer-songwriter, bassist, and guitarist from New York. Early life Karina Rykman grew up in New York City, the daughter of two Columbia prof
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 0x54db9ccadcb400f3c5d19116a77813489851619e690a3b8f6553178b5fb8df7c. 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/24054e05-272c-4ea3-a035-002e4a0a523f.json and https://artists.proofprofile.net/proofs/artist/24054e05-272c-4ea3-a035-002e4a0a523f.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 0xc0c39bb9fcaa55ea20a0707d9908a9a9c7c9a17a0a31614f5cb18256a617a5e0. 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/QMFME2375168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb5071441424d3654db5e6835073b3b0688681252b46ce723bccbc4d579a9880. 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/QM6P42352128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f5b146f73b4a86fb4c371c0e44ff37f8e822e6686bed31b9bdcb58ff2ceec91. 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/QM7282366197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b6519de2f752771dc3705f73bfeea6285763ce100e10e26bd0596e7f40e8627. 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/QM7282366198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51c5643ffdb8297f09c7c9dfdcbcedb517d4d1f2ad442e080c594b02ab640276. 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/QM7282366199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cada59f869375de1344ece07d1ffec5597bbabc863388d017ebf6ceec80ea7b. 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/USHM21941257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8682c5df9875ef60bfe530d2d86ad5b9309e6c9c952171fc2356a967ad7a40c2. 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/QM7282366196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dc946b15ed4c7f6a61864e705ce70d4dcbbc33bdb25d836a064858f3bd0b7db. 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/QM7282366195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x081390045ab1153091dafede811015f5d638814132616bc6dec04d3833e4126c. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/QM7282366200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb8bfc3a78c1715cd65c807f096e38735a85e94a4bf6eb29aa7dc2ea2d65cf6f. 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/QM7282366201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x116fd7e5060deb01578627c6880d2f98c4b127ea2b6f6456c1e7b7eed5d57433. 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/USHM82183025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4908edd52457e13c1837a5ec50f990ec10bb2867060e6ee65cd15b144a523cae. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/USDY42182325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd7365a711274a124bcb1d35eb1b20e44bc635709dc39aa0f4d5f4893c2654e4. 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/USL4Q2050886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87d47d86978a004bbf205425834ac61d9269a59e20c428eb785346f285111d12. 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/USHM92034515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecc1544b8f1913eec080814a60cec07b7ab0b056549887a713da7822e3654edd. 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/USHM91980684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc17c0d9773261f45aa81f51e44bf4fc8a13357f295cc7f640b7255a7d532ccf3. 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/QZJVX2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x206099b145ff3d0e7ab8696b60413002c86c33d6459915090a22208f788f2b7c. 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/QZJVX2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1f223ab1d9d3a66e2776a67a336a8d96de226e1395cffc67376d2e9781c6100. 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/QZJVX2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a063a0f5fdf267ec95978cdab8da966e461f71832560273ab70a8772da3f38a. 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/QZJVX2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69a94a3f7f7167ad94f081fee6875963e52b921e96d72fd17e1cde4748deed0a. 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/QZJVX2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf993639acb2c2399c595e80cea16426e330a691e89abebb6cbbc31a1161ab993. 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/QZJVX2300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56b4ff758840c617bae8538dc8eb8da9c880de4db790c07676baf789cce7a5fd. 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/QZJVX2300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d35269f7e4f6d814d98751b9d2e1f6e03d6d41bceaecb671c5cef465c2ad02b. 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/QZJVX2300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bab490cd90f2dd6416101471f7e25ff9023ac3b8df2fa15b387127ae9f77908. 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/QZJVX2300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x564183e2c3733fd5e540e4307cf088440060fd3ea0a15b2a08c1b92a8bbbe35e. 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/QZJVX2300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb25fe448058fd133ef6fc7bc11c297a0e624ed45ce10d6ec4681ee6b48a5d07d. 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/QM6P42472840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67bdf7fc77318100f898af20c652f0d293bf02d511341fdbac5b836be61fafec. 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/QM4TX2463551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7613fc7291ba40a09f1008e9dc9960ffac405d934ce87abfc0cc4a1206932266. 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/QM4TX2463552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9b9a1f74a92c345dc971b47e8ea7910a3d91988170f176b0c15d20b541fd82e. 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/QM4TX2463553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bee74b69e04f72675fcd5c509166b16e0f0fad6d3105b35699a297bdd52b295. 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/QM4TX2463554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67bdf7fc77318100f898af20c652f0d293bf02d511341fdbac5b836be61fafec. 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/QM4TX2463551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7613fc7291ba40a09f1008e9dc9960ffac405d934ce87abfc0cc4a1206932266. 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/QM4TX2463552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9b9a1f74a92c345dc971b47e8ea7910a3d91988170f176b0c15d20b541fd82e. 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/QM4TX2463553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bee74b69e04f72675fcd5c509166b16e0f0fad6d3105b35699a297bdd52b295. 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/QM4TX2463554.