Mario Diamond-Judah Douglas (born December 6, 1999) is an American singer-songwriter, rapper and record producer. In 2017, Judah began producing music at the age of 17, with his first commercial singl
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 0xf7d00a69ba836f94901bb5775843c8d708d07fcbc0c391ef39f8c403cb6927a5. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/20b4498b-ec82-4803-96a9-1d7225e30adb.json and https://artists.proofprofile.net/proofs/artist/20b4498b-ec82-4803-96a9-1d7225e30adb.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 0x7ce42fe6efb7ee8ba1dd485edb7dd0b96fcf799854090e53ffe03b3906f54718. 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/USYFZ2397601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea1bec6ae221a0ace57449e01adcb5816208f10c5d95f2bdbf6c1fae70a033e0. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USYFZ2397605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x536e6df863a72abdd4c2d29fafe3e5a9ad99a458e529da191a26fe0af9444914. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USYFZ2397604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x032198132ecde1bc7f4ce5328ce0a384c36acab6c6c3f8bb607040298c9aa699. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USYFZ2397603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a0b22e14f60c0c24d823433e3a5fdfcf7f8900f36911c9aec046fd3f1678fc6. 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/USYFZ2397606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec64d4dff33f80d2b36fc9da30fb9c88af155bde5c4cbffaa629a1b167944d7c. 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/USYFZ2397609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbee705b03dcd5334aa765764e64fb8bc37e332a4e852c888877f9dd8dd09643a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USYFZ2397602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb05b6f73c2ef553ae01d2dccaaf76dcadb7b8ef60c9877271999bcf70b63133. 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/USAT22200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5fe36ce59628ca028b43122681e0e6a9defc80159fab0c240224388aafc7f96. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USAT22105355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e825dda36285a2589a57813f5859110fe123a39c6aecafd46fda046000307e8. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USAT22100200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea1757bec84d200b15afc0044bb0d7ff1122e21c6dcfa077e0746e356f159850. 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/USAT22100207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35c66a80cf12a928ab3d5a79ebcd1652787da912de0af123a01b8260236bb229. 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/USAT22007876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x899fb745a6a3056b466634aae0456eb3e216edc1e9dd5e79ac69711d36acae54. 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/USAT22007877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c76ba60f1c88d10b38ec411cf403680f41126a57115cb40888dca6ea92f4ea3. 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/USAT22007787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89382b7bc4d448395df591bfa94e563b297803892fdd8556c69f6f6fd5631146. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USAT22007878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c76ba60f1c88d10b38ec411cf403680f41126a57115cb40888dca6ea92f4ea3. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USAT22007787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c4f9401d4713af37065a3e67a08a81d0fbef78818bc659a33f72490c4979311. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZK6L2008014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eba48eb4f3472fa7da401d382a92fd90983fe47f0c8e2922fd515c403b6fbd9. 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/QZK6Q2018865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x303523d4d9d80c931fd90f47fc58e917277d654b63164625832a0643cfb799af. 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/USAT22007570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29f1615df57fe482be4119a1e4f26f974f2e1efc740cbf97eae7e5816bd09a09. 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/USAT22007310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4955dd0d94e9c705f01770103485187c0ebb829a7c784d49bb9519e68b36b931. 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/USAT22007547.