Griffin Matthews (born 1981/82) is an American actor, writer, and director. Early life and education Born in Pittsburgh, Pennsylvania, he graduated from Carnegie Mellon University with a B.F.A. in mu
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 0xac7f527cc436e69be2fc4ce539d1547930c182453c85d669f0c0740938b61bdc. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/beefdc09-d6e1-4c42-bb71-a19c1ac08717.json and https://artists.proofprofile.net/proofs/artist/beefdc09-d6e1-4c42-bb71-a19c1ac08717.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Bricks (from "Witness Uganda - An American Musical")
Fall (from "Witness Uganda - An American Musical")
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 0x37ebe21da7cfe168bba0361fc5493a2da01b126383c24872cf4a66469619fe97. 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/USQX92103730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86a39a48e844d53ea2c320ca0289e5e754fc505d95720520c00d68c436db9191. 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/USQX92103736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c8a7c555613d531be7468a118baa4d014113d86da0940cf988a2892279a2813. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USQX92103743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e7211758ad10077f735107a7a40ebf7fb26dd8cf849eba4cfe398c6605fabd8. 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/USQX92103744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x003d9d40a73fcfc63cec5d4178d7130faba0bfe353247ab51c421bb5a4b08f91. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/USQX92103748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ad60e7351a7081f7aa26c841b58fbfb61a644c8333aa8cbe4837f5856dfbe66. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USQX92103750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd41775f6b99c24d967d028a172c483fb89ca705ec312b5abd2d853b479ba651f. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/USQX92103745.
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 0xbb5ef52d72fbf85e7b81e17eaa7c0d5752bd46a9a217ccc64981adcf894fda97. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/USQX92103728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18eade600601344ab591c6d88f20ae1ea2209224985d266faf625aa0c1a596c4. Chain 2 (Bitcoin): anchored in block 960166 (2026-07-29T23:39:29Z), 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/USQX92103729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d4d9bc1fd783b525f70e15f51c139ab8189b5a9732c94b9627fd5bd18a36c83. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/USQX92103732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e0dc13218660fba25f07b199f09ade0632f36895e93f8feb53a3923bad3c003. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/USQX92103733.
Fall - from "Witness Uganda - An American Musical"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a253f9a39c499b0eee6214f7894b8dacb4e5e77b8d7e355b73c80d5bcf9868c. 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/USQX92103734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc52ac850edb25248df7c74e841f4f4b4d36009e49833acc867730c82f3e906a. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/USQX92103735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d9228e52a8d207af99c254d7f81f449e869b3af55566aa4d299557bec3d7cc7. 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/USQX92103737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae77c809358c2758301eeb31d0717579e43f8ec50a26418a48cba0275b0ae8e9. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/USQX92103739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc19f84b011fe2659b64f1a9c1e318c68a172e2eec3d22ab32e9ec23a0248b375. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/USQX92103740.
Bricks - from "Witness Uganda - An American Musical"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6103f99e1c30ef718630eef1ff90f1ef128ed93afabc84336d595ff668e4fa3. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/USQX92103741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabb2b17b39a15aa614cdd13383df8510c064c49a7262290ef93be3c15209e123. 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/USQX92103742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0785354a6074ff88d2bf18204ad6d02c4b7ca2ed5d68be748f4ab5770280972f. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/USQX92103747.