Maria Juur (born 15 March 1988), better known by her stage name Maria Minerva, is an Estonian musician. Artistry Maria Minerva's music is described by critics as a blend of avant pop, electronic dan
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 0xe6f6597602654889f32dfa979a4f461aef551130a104b9e06cc96f36697f8961. 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/aa5d4ca1-9cc0-4ebb-8d17-a7431b307d60.json and https://artists.proofprofile.net/proofs/artist/aa5d4ca1-9cc0-4ebb-8d17-a7431b307d60.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 0xd02d042a9be4769eb7e2be5bf4cba9178bf9cbcd2d3dcae2a3a4ef78c1903ce1. 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/USA2Z1211602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22e141d99a7ad26a3efa05de2dc68ee83149d8854a17bf062e47820e31efbf9a. 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/USA2Z1211603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c1096dd4d2b03aa661ec6a9ced2ab67d662c2fdf6dd8782ae3b96db1b22bae5. 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/USA2Z1211604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc346edbf0b8199b103b6f546e9490605add6b02b7da604868d32c9321f3c545. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/USA2Z1211605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88cc28bd1f9105a4ded8f55e78424f72544f8402cecb42dd7cfbd0935c3adc68. Chain 2 (Bitcoin): anchored in block 960187 (2026-07-30T01:34:28Z), 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/USA2Z1211606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b777983acc1d65e2a7ae879c11bf032730bd5619aee456c2f6224d51893ed17. 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/USA2Z1211607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcecd60a6b1fc8fcc05d9e353c7b5cfaad64bf34aa9601d3106893ce74d82d2d. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USA2Z1211608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x474f9925860adcd3a906a3bf67295276152827a4c7874a54284da232de102fee. 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/USA2Z1211609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eed996560bbf896a24d39decaac24a5de3d09ee305220bfdf9674b1a22439c2. 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/USA2Z1211610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0078bf5bfa407e7bbaf1c5ef5ac5fa655cb510e982a84af1c74eeee3437d64d. 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/USA2Z1211611.