Galina Grigorjeva (, born 2 December 1962 in Simferopol, Ukraine) is an Estonian composer of Ukrainian origin. She studied at Odesa Conservatory, and in 1991 she graduated from St. Petersburg Conserv
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 0x1a57701fb7f5d69f6631f2e0152975c19e385618420b0cb18d375e3c6699db65. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/91e5c3bc-3dd9-4846-9405-bc330a41d5fe.json and https://artists.proofprofile.net/proofs/artist/91e5c3bc-3dd9-4846-9405-bc330a41d5fe.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 0xd169a89912ac11c8752647dd7ee68575f9494f1c2e95c3d5e6c32fdfb7607b28. Chain 2 (Bitcoin): anchored in block 960218 (2026-07-30T06:57:05Z), 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/FINDE1500188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8784998ef2a19d63d5dc9743f6aa89e82dc1b2e816682b24534ce71b25edad6. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FINDE1500189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b6f7d2f8239916bcb280bebe67b9a1c7887d5b58b50a0f5f8fc6a57469851ee. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/FINDE1500190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69c3419e60bd772fb7d7d218864606a5a22d19bd04a7b14b0c98b3a8ac34c3f3. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/FINDE1500191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ef5f08b4c49d767a60167fd64f2e023cfbee1c11592a728c732abe8969df82f. 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/FINDE1500192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b302bcaef9151120063a7bbc9c3a0f1ac6f84e98846982b90413a9969c8d52f. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/FINDE1500193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5b16f8943628f0f3501bdb548333a62f467e1545409158c81f34331d58127af. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/FINDE1500194.
Diptych: I. Lord, Now Let Your Servant Depart
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51d7e0bd3e7b1663621eb97299b0e1ce929abe026a774e10768dcf0ccf08159f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FINDE1500195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75ebba3f1e86974f205d934cb43d6bcf6cc79ec9b73014001960e10c5c19c33a. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FINDE1500196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20e333b7990ef12503b5cf03e7bcb7b8ed03c2b751047606f63ed98819a4da22. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/FINDE1500197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x006ae136f63a5967229395e5ee704da5aed42fcd14d62d7b993abfd92e58264d. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/FINDE1500198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84fe1371ace93c2e2435873dafbff515357f9217c9bef6d9d8b2afdfe9fc971a. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FINDE1500199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf2b397c246d6ef779f1569a0460cb3edb4579e2cf968ddabbd596a2a3ecf388. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FINDE1500200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6398e9f57904cf015cdb15349d1cfb916bce7dfe5655167207ec21e243a91dab. 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/FINDE1500201.
Galina Grigorjeva: Music for Male-Voice Choir
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3432ef490f8d31bd69e42a9ca933befb8b9dd3b4cb8149eeaf95a965f5f94c0. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/SEAES1787010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25bf6f4ff997babb0c3d0d366582004d8c023577f60355113f15fcdf4f3327c5. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/SEAEX1624140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b0a7c81248ffeb5a0ed9b1630bcc4cd5faa678a293521a71c87d19531c58574. Chain 2 (Bitcoin): anchored in block 960298 (2026-07-30T19:26:00Z), 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/SEAEC2218030.