Austin Alan Rochez (born September 2, 1997), known professionally as 645AR, is an American rapper based in Atlanta, Georgia. Best known for his use of a high-pitched voice, a hallmark of the hip hop s
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 0x5205a28d463283085894b6eab01c36a391d6516edb62ac2b99dcbeee0f4e717b. 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/ee5ff96d-8664-4c6d-a29b-565f17cf27a8.json and https://artists.proofprofile.net/proofs/artist/ee5ff96d-8664-4c6d-a29b-565f17cf27a8.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 0x210d7b5ae807816f8bdeae8e3e6f198172eae9168eb7f47dca30bb0f02597c1a. 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/USA2P2138161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd29ece0ecbf103ffb6491658862cf93e785c315d05946accca9c970f33912cd. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/GBMYF2200119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66a3f356d6fc0055548aa50f2e53ef28a615aabaebe2484524f6e885db4feb60. 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/GBKPL2288499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b7fa27858174aee09980f8fc365f25e350b31183210688ce9ee352b1b7d03e0. 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/QZFZ42078188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83f8fbacab8c28efdf3f3fd7a657dc3a778aac37723894a2e6c9130747253d1d. 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/QZK6P2173697.
comfort noise (Music Inspired by the Motion Picture)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65afffbc3b209bd57793a600595133966c4ec29b54f7f9d375c9dbfb470d876b. 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/USA2P2232932.
check1 (Cali Cartier & william crooks Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e8fd9dfc7251304236bf5ccb1a46cde775119de84986e02522b34f24922fbe4. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/USA2P2232928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46dda37a7604b0a6e12dd3cea887f076ad0ea648bbe5ae8ee91745783f8bb503. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/USA2P2231812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46dda37a7604b0a6e12dd3cea887f076ad0ea648bbe5ae8ee91745783f8bb503. 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/USA2P2231812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb47c93d2e0cd7bbd7b41dc5f64839f3e5875a45c385118df5e2b42fb74964da8. 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/TCAEM1983294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x210d7b5ae807816f8bdeae8e3e6f198172eae9168eb7f47dca30bb0f02597c1a. 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/USA2P2138161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b2228f29f8991be2bd480582fc161197abd4601a84145bc84e3a3ddfde8de46. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/KRB462100549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38d2c637f8137c00306e919c12cfc224af561a781f58d54863380dece8291805. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/QMKSC1900440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3713bdb956130059978e7d45214427c3e490c9edd8590874980571720924704c. 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/USSM12003676.
Sosa (feat. 645AR, SenseiATL & Brodinski)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x094d490188441b1bcd7cd954d40ab65a9d974af61af74193e99db49d3db58888. 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/USUYG1301460.