Masha Qrella (real name Mariana Kurella, born 1975 in East Berlin) is a German singer-songwriter. Her music has been described as belonging to the genres of indie pop and "a mixture of electronics and
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe3fdf7fa2611389b9e49cf4ce2cd1872d0a53465bc257550e18342e78fec289. 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/aaceaaa1-99f7-4007-b7f2-2570c61c62e6.json and https://artists.proofprofile.net/proofs/artist/aaceaaa1-99f7-4007-b7f2-2570c61c62e6.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d1c0cb994f46846bd959c8e6b917640ad54809c6b627ad2b53394196125c824. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-17T00:00:07Z), 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/DEX260505207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf82d76cf9bddc0440bc56db80a8715c8a9a488c7ef33ef5d418897e73e0be091. 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/DEX260505209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67128dbfaff071851fd3e1e385b187c093911448efdee0473b07ca0cc2ae6f0f. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/DEX260601302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38275c9d0c2d87af0e3ab58880859850af375ac1cc850ad0e6e7d1e927e8030b. 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/DEEH62100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60a30e8890cb81929527d605d74993c1b2386e0e343c237b6b16141ed88cb945. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/DEEH62100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe58f04750c0984d58a03c280143c9db4a1690b8d7902263f934f5c16e61dc6b7. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEEH62100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaccbe6a6bfb8413ff5a35ef8bf7d7dbc53c4767d623c1ea1e1b085198a7a388. 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/DEEH62100014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28fccbec455465bd328f511a002fe9a7c471e1cae4b043e8ac4524739db36639. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEEH62000184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa57d451130c14264fe4f63043ae42e2dee6bba42d3caeca3a67dc7d78d810c25. 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/DEEH62100016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f2febf18e17cc235feb88674c4c02ab844b31664077f547d361cdfa87bb47bb. 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/DEEH62100025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b0eda84b556f59020fc758fdba11290ee6fd00068376cb2b145ba69b88ca861. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/DEEH62100017.
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 0xf55a3f9e621cbfd14f7c33521c04edd750f40b76f59823390371ebb13c9367bb. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/DEEH62100018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e0eb4452515add01d152ac5992be932a740a2995ea9aa0d1be38767542392d7. 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/DEEH62100019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7229fda4ea3419d0bba31487de8371cb9de98afb921cb98690dd64d21642c362. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/DEEH62100020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e28fbc3f8676e9eb9e49339db23136fb18aa995bc062dfd4d2195d447a8ec37. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/DEEH62100021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x675ff132d0842f0fad7ec23ba4d0072c1a3f2f7625bacf2c1187b08a33cebee3. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/DEEH62100022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6af659eb2392e297ad8f30c1565844343e1e77d23f35a83a5085d9b08a28767f. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/DEEH62100023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1016144c909d9d34d72eae43794d270863f71edee7d9f9fa719d8beae1bdc2f2. 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/DEEH62100024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44d0912c13ed4bb5b02a027351a1fdcdb75504120eb747b8edb8ff9435368a30. Chain 2 (Bitcoin): anchored in block 960225 (2026-07-30T08:04:30Z), 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/DEEH62100026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf14108e8dc8e9ec405ff8272915a19f27efd62868702ae5c5daea15f2fb9d7d. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/DEEH62100027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0598987dc3538c944a9c8f17848489385c78b629694b3ae10e1fd261820c750. 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/DEEH62400160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34b12bd695c9351bdcaf0000d8c279ec2a2d0e5cd8117be42dbc3bb4f09925d6. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/DEEH62400163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b30bd3f2b33e9ef9588d502d389b61095b192c7b4bc8b985c6021ba063a8516. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/DEEH62400166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe26219e9e11d944726ca42a17c99488e4f4dd0f0c3133f467baaf8b9b2d4a1c0. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/DEEH62400168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e90afd69ab058d9c10ffffba018d6596b321da5315e72bb6d97919b2e790263. 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/DEGQ12000296.