Matthaios is a Greek given name. Notable people with the name include: Matthaios Kamariotis (died 1490), Greek scholar of the Renaissance era Matthaios Kofidis (1855–1921), Greek businessman and me
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 0x97978eb7834cb3d8c7337833e2298b0a4f0b747df90415b26ffb119315c95347. 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/48c179aa-8d9c-4055-b884-4e1d64766a09.json and https://artists.proofprofile.net/proofs/artist/48c179aa-8d9c-4055-b884-4e1d64766a09.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 0xfc5d5c566a391aa909dc9ffe3dab8ea92265712eae85d282d2a68d269df1c54b. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), 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/QZAPG1740899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf46f257cb52add796373f3db8ef7fad9c642d46a71a0caaf2a866032c85e000a. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZ8LD1972211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9727f72234972056c3986f91a4a19c6484e989f57441007a02b1a31b2cda6f69. 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/QZDA71981582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd20e0e0b20aa386a8fe29a02ed9cb3b213bac96d4cb17a244dc62c86d2ce6f0f. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZHN81928727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f8810f1d3409ec600ce05989a3ef2d6516d9c084534f387804ecc70099681d3. 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/QZES52056492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x642bd76a70a1f73d6e831c5bd546338bf9f0d68535ea76a08f474757b76f348b. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/QZK6H2061200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36b931c696b2626dc335c6e0e6fe3be877518252d66b1a5b420d450b8eb018fa. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/QZMER2000396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ef577960cd23a2ca2d87df97e74aa8d1c1eef47e36ca8a68d0fb3eb1247a70e. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QZES62159370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35adaaeb0dc92c0f6e2fc6409df9852ce8a9ad76fd2884aad66d2f1dfa224ada. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/QZMEQ2116279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x411f00fde1d59ba201b77f4500ce54b786aeb937cb933d112f715d84a4c852c4. 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/QZFZ62246804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x671f098a4f0c9437df5adfc6b9a304d9c593ba45e2afa311b87a7366cf047acd. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZK6P2264817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f7fb01edf44a92efc414ae969ea276469216462242f487c17224cf0efcac451. 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/QZNWT2246699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x637426abce667c66c863907c9d7b257065a2f7de4eb9e73b1f3692ea6cee89af. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZHNA2397475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67cdd768af4daa3a5ad0c57ab7ba249983222a37eb6afb1e8a66f28362ff718a. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZNWV2390880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71f9dabe01174f4692804ad0e3ef50e7db233a0bb28424ddb62e1b388cb2d2f1. 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/NL8RL2418369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ff4d67c6e7cdbbb2729ffeac4ca7df20e5b7e35296a7b603f70465fefdcb38d. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/NL8RL2459461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x174fb641dc9e73ea18ef58395ce980c3acbe116d17e2b073d8eaad1c71034fd8. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/CA5KR2055618.
Trust Again - Inspired by "Raya and The Last Dragon"
Trust Again (Inspired by "Raya and the Last Dragon")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2e291a486d81259fa0449fc0a61e6c3304ea9e8334c12f9a5e3b725c74125b3. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USWD12110492.