Ma'at or Maat (Egyptian: ma’at /ˈmuʀʕat/, Coptic: ⲙⲉⲓ) comprised the ancient Egyptian concepts of truth, balance, law, morality, and justice. Maat was also the goddess who personified these concepts,
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 0x5692fb30030f3ca9e1982ed5aeaf6ee0d7e077e04b03bc65149d5c2079f19a32. 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/f0468f89-f13f-4963-9e9d-d8f505f01930.json and https://artists.proofprofile.net/proofs/artist/f0468f89-f13f-4963-9e9d-d8f505f01930.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 0x03c498cd71bb4cef7589d040d82042e522943bd3fb7a1f328f80987645892370. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/FRX201739343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb571c11b077e0c9952b21581f120a782e48698fa6d644a1da4506bab4de63007. 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/FRX201733395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e4a6055d76271d8dde4c47a6c17b6a6730029464d9dd0ff9fe240daecec445a. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/FRX201733400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68ac396bae73bd348d8f7a6e2b29a933485867b6956226b43c355da462a49d89. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/FRX201733406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabac7c78d04fd0d811c454ae6409d6bd942ea1f6f75e38977b9d11b20d103eca. 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/CZH661100018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b4bc838dcd956339ca6723ec731e4e998fd5e0d180450c92ccaac279b767765. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/CZH661100024.
Konec Lepších Dní (feat. Jimmy Dickson & Rybičky48)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x999761aa530073e832bf2541776daf5d1ba14ff33eca02c6fba044893c28f158. 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/CZH661300103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeec8fb08a8e90323f8c913b6bf61dbab13c70221b541a644055069506566773. 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/CZH661300106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07b3068de987ffe1fb863cf08a9f16ba3efead91239403b0b835a24286d1f300. 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/CZH661300112.
Pod Hladinou (Video Verze) [feat. Ben Cristovao]
Já a Ty 2 (feat. Viktor Sheen, Sharlota, Ben Cristovao & Ezy)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedbf4db03a32c224906778090d5268aeb49a494884638921fede0972a0e2968e. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/CZK801400084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24c1e47645198b5a6ed4a1597d5c68300c30aefddedea8d59b87b0ffc29037cb. 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/CZK801700015.