Maarja is an Estonian feminine given name. It is considered to be the Estonian form of the name Maria (and therefore Mary). The name is common in Estonia, and may refer to any of the following persons
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 0xd3b6fd41aa1799318b40de16286a4d1d1c74a3d0028edb243b71646d853bdf9d. 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/2d981507-c4f9-4c88-b578-60faa4e85381.json and https://artists.proofprofile.net/proofs/artist/2d981507-c4f9-4c88-b578-60faa4e85381.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 0x475895ce977bdf7dc80f1d0fe9f8954304614f7a633351e5c9c338996d541521. 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/QZZ772424059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3987f9b68214102083144a4cb8014cce34c51c1370a5a92c0acdd8fc341cbe34. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/QZZ772424060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe49bb8cfdedef49c3deb71b1d3386bc1a110252ba380246fc2639fe7c5b5f0d. Chain 2 (Bitcoin): anchored in block 957583 (2026-07-11T15:53:17Z), 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/EEDD10800201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa0e418a829123486c378d6385be898d71e7f0b11489531e2d2a62559fabc5dc. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/EEDD10800202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x424e012da3a92b1c4522e840ad0987cf82794c16ef7c7ab1f489b2125fde7ed1. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/EEDD10800205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8261ae910fe588b94719cf1701120822a16df6e42c78975a2ed717773cadce8a. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/EEDD10800210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb924a5f77b759cdbe53a44ffa4179419a349cfec5dfce84a1ace0b099746a53. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/EEDD10900205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3a4155b25de7dee0668900733cca2b6e610dd594311711ae743fde78be366aa. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/EEDD10900211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a56527c024a7ecd068dafc51f13e487088ce6a06cdd7922fdf23d8ff7ff12a8. 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/EEDD11200206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbc5efa7a8bd0a0c49007595588f5426c8613e9b3ec422a01f59bf5b05d26105. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/EEDD11200207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f3023b5fc64eb7dc7b8c6a87b15f6ec7445bcc91f21870fe74a449841962033. Chain 2 (Bitcoin): anchored in block 957576 (2026-07-11T14:19:48Z), 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/EEDD11200210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68a968e4039c1ecdfe95412ac28c7adcd481593e717854bcc2c9bb2309777863. 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/EEDD11200214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d92ce5d7a12bb9ef3cd14e10fe0faf96e27b9e76edca4edf126e3fbc1f2aeb5. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/EEGK11500001.
Forsaken Grounds (Reimagined) - Radio Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ea2e44c593b35e88b667ef9cab982738d1ded29c5bff4df88951330c345bbc1. 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/AU9G31812905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a3f7662031ba4728f31ac4497a7660057bdf6d1ee0dc31342c9f172dfa7408f. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/EEWW11600005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0824e84b41bdcd553c4c16d148fffdc1a63e53133cd065911a00d5cbbc87cecf. 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/EEWW11600016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6fa94d6323704a39c081831ac8891ccae0ea19d3ff77f7f3ccb98ac6318c2d1. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/LVA101100149.