Ross Matthew Birchard (born 11 February 1986), better known by the stage name Hudson Mohawke, is a Scottish producer, composer, and DJ from Glasgow, Scotland. He is known for his work in 21st century
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 0xa4df9b5354af046602bf10574ae07dd5a39c172e779df6360a505958495e4d3b. 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/00994ce0-f704-4221-b495-8760bd506337.json and https://artists.proofprofile.net/proofs/artist/00994ce0-f704-4221-b495-8760bd506337.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 0xa47be7df80d416f0f9c9608ea84e5bfe7e80da1369eecb60d100cc2a49012ecb. 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/DGA082396271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f19d65378e5898e1b866dda5b04a0839ee70b55c4bab5788547b018199ce631. 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/GBBPW1500225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe20ea5a505733eae466cb781ad089453a3cc532eff251f7c5025e632d9eb6bab. 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/DGA082396266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd25cb91f844bf923eb8940ab95c54f3768774ddf3e05f193c6313cb7827b0dd7. 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/DGA082396267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6b88bf39a68d49fa2b24a47b4fa8cede4c5901064d86d6cafff0dc33a5339cc. 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/DGA082396268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6e095f1ac6654f39fb45ff87bf107e9a8643740044fd86cc5757cd2fd2bb11f. 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/FRX202066120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x756ce1586215d20167691a5acf7f68f5ce59601b7bb93ebfab0cf0c68a61a155. 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/QM38F2300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9b6193e9f836b81a8f9a09b9ae005892cce159cab507f93d9911744bb25d682. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T18:47:29Z), 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/DGA082396269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x197c2507866be48dd846b27877b3358ed6e12e375ae2c338af39ce8f2cf8ed99. 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/FRX202014193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x554dc15c108011b89765e38ad26b4f77de42a7ebd2287d97dc7f039642ecdd22. 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/DGA082396270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa47be7df80d416f0f9c9608ea84e5bfe7e80da1369eecb60d100cc2a49012ecb. 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/DGA082396271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a242b59bd375fcf912e16731bfe150cc17d9881f5f2f31236adc61b5e9d5c8d. 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/DGA082396272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaebb3fd4c0a2d2ef25588caef4bab4ea8390366df891b57cc6d482a071d29414. 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/DGA082396273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde066c303804e304761b85133834c9a3db8a5b08d49f62f36292127caea22671. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/DGA082396274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03ba991145ce2f65f836d0b6b05fb17918ad7ea46f42c3c4ba42dc00f1322c10. 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/GBARL2301047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cd7ac2ca48d5f7dc1a38c806b8e0cce5b23c1231c2c4052df6c87db6285e6fc. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/DGA082396275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa18b0ee2cc5d741891eb0ae5bcc7c236d47e46c955abbaed8f75393c5d996611. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/DGA082396277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce2d35d2859c9013b8798db31aa75e06717140fe4584903dd8c685958ca35ef1. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), 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/DGA082396278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce2d35d2859c9013b8798db31aa75e06717140fe4584903dd8c685958ca35ef1. 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/DGA082396278.
Silicon Valley (Music from the HBO Original Series)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c5704be317aa39db6f10a3637ccb07065416da6813f1597d9873fbbe741d461. 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/QM8RL1400443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9850469fd489f6d6f0cb4c4149ae173b9acbcf76784a17f4e521db25c5223819. 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/DEDU21600012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8969ced828990f24e2de1f5c3a87647b139e7d85736bef9d2953d921b0a4d261. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/GBBPW1200017.