Vika may refer to: __NOTOC__ Persons Short form of Victoria (and variants) in Eastern Europe Vika Bull, one of an Australian vocal duo of sisters, Vika and Linda Vika Jigulina (born 1986), Romanian
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 0x007545d278206d31884eacd3b1d1363096563bd21da13970d71364e7ef381381. 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/584a54b2-7717-4c09-bef0-8d6952848ade.json and https://artists.proofprofile.net/proofs/artist/584a54b2-7717-4c09-bef0-8d6952848ade.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 0xc3d8e892835d79dd32ad866e5fb64a18e6959a03d33b5ed34f0ac7cce7d388d9. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZHNB2120978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9e1089d99869f5bfd65a84bdb3c706eebb7fee4814c9ea5befd47c31b22fe6e. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/QZHNA2126606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffa99c8131a9c2d76a076760994b4ccae4d91b9adf4c84775a10810e2c84c16e. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/QZHNB2120981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4a1a1232c15a407aca8593479eae35351b105bbfc5d46d93fa821976ce06840. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/QZHNB2120984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x168fbe0c6d1f0b24c139f39a6c7412ad8c71e96606a8430a30935af49f4218d7. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T21:23:21Z), 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/QZK6G2317006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb70afc4815c38cb2b4dd2518f3b12257c2eb409f82edb2fb4219348aa80b9947. Chain 2 (Bitcoin): anchored in block 958613 (2026-07-18T21:35:09Z), 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/QZTB22337239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93ddd911715baca9dd659c7914994a61ccd8d7e5ec206263cfc0d82bf6251b65. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GBWUL2573513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fb303b797f883c9bd0fc9ac3ac63d94a224991b2b2a3cc53b4944bc21b98f96. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/GBRKQ2529386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93ddd911715baca9dd659c7914994a61ccd8d7e5ec206263cfc0d82bf6251b65. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GBWUL2573513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fb303b797f883c9bd0fc9ac3ac63d94a224991b2b2a3cc53b4944bc21b98f96. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T10:24:04Z), 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/GBRKQ2529386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d1e3ec784acd269a46f783a0e8915b0f50a072ae9bfd9124b370160650f1995. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/QZWDD2570410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6ed013fa121c933b109d46f9082aaec38c58afe573fefe650e432d12d6a0c4e. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QZTV32567460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fb303b797f883c9bd0fc9ac3ac63d94a224991b2b2a3cc53b4944bc21b98f96. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/GBRKQ2529386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28659c2ad42109841b3014f68b75b99f28f69beadaf2c07a794043cbef5b3ce7. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T05:02:52Z), 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/QZWDD2570424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd90af1ec7319c869bfcdd6e7e36b4cf019d3eb7afdab021b1853c521a4084c3. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QZWDD2570434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7eb94ffdfc56926781903de7b3faa0270aeb23b5783bb9d89b62028a674923f. 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/QZWDD2570448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefce975ce9a951406e570efe3f1dc7f3fe6b261e078ef65739312ec22fc0d3b7. 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/QZWDD2570590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x750e432a044fb24b7613b69154faa7f1cecdf920abed3c229ec4d6370bcce9d3. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZWDD2570603.