Blake Mathew Simon Mills (born September 21, 1986) is an American singer-songwriter, guitarist, producer, and composer based in California. He is known for production and guitar work on albums and sin
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 0x2a6f7e0c713243a5dee60e37ad320c45f50e53804512aff59a5d64af4c71e6d4. 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/add6971a-92eb-41c1-89f8-aa20613b25fa.json and https://artists.proofprofile.net/proofs/artist/add6971a-92eb-41c1-89f8-aa20613b25fa.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 0x5dc3b7dd45e8a7d0d7e49be0cd1f49f04860e7b91ec0e3240ad3e24f66a3cbef. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USAHB1000288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdab8ec865d84fe81c4f45c8ddeea4870ed554b340ef96633765ff4675dc4eaba. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/USUM71407491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x616a0d68234a13afba429e98ff7d01bb89d2b8d91b9ef0d982078195d170cd33. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USUM71407490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x854f150d9e0e861363b3eecad8b9dece91520fa5e4a9e4002298e2a2448d520e. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/USUM71313762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74b12e65002fd170160024a4c037ad2bc2357f0c55dca3fc63d5589e4462dde0. 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/USUM71407503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04c89e84d7bfa40e21549b6151c76fec62ad49885655339f48b83734302f9d40. 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/USUM71407504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x412eafbd0f06caeac3c536648042b4fad7b8000dbc278b8d8894a40addcc5655. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/USUM71407506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x133818c81e4ebe2a7e64ae5dc6fde638eb2422244f80e0f5ebf88b93b034e0f8. 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/USUM71407507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c5622e03030f9e5643510b302c0e2823f024a755dc48f4d58486ea296902975. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T11:08:30Z), 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/USUM72002337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x573bc0efda54c93f2d2ce8ce3ffa09b3def7376c03c59296cd37aedd5e930ac3. 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/USUM72002332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe972a5db91836874ad378634cf5644ebc89199793df90350a1159b256695d995. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USUM72002333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf992b97bf92d7b8eda253501c5a96ec5f0140133b22bf9684a273b950bfd89bd. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/USUM72002334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fe64bffbee0fddbed834bdf913ad5e3e383f9edae1536bfd4ea2677682dcd43. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USUM72002335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c5622e03030f9e5643510b302c0e2823f024a755dc48f4d58486ea296902975. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/USUM72002337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78b5ee8537b0fa273e634c51b1dd84e17db26e7a181281bcffc1339b2f6e6051. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T16:28:12Z), 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/USUM72002338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1956ae4db5e2fd0eaa5a11d6b5ec41bc4a176adad66a6a4f92062c69b5ac11c. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T11:08:30Z), 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/USUM72002339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ea9112fc413989c07c54e2a316503108edaff6923da73d292c62255029c3968. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T16:58:47Z), 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/USUM72002340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd1354cfcc436f6dc2e6be26e9f814751e24dabf8e8f26a6108973e4fe1c2ecb. 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/USUM72300839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcdc2274151c7848e2a0bce2bd760c6bed7d64f2f3e780eb932350299e8386b6. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/USUM72300836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc96dcb4e4defce58c35e23c29185dfdb1c0ca8261de448cde14a2ae45421c2ec. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/USUM72300838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x856f6cf90fd6f27ad39ef4a94dec40f11cdf8bdad36e73f9fa7e0bfd9c0088ed. 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/USUM72300840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a36abb20b489ef0282e74acb86ca4b45d2dfdff5bbb595764c5baf7041b577d. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T01:47:42Z), 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/USUM72300841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff628d42da3327b8a038b3b4345e1594a717276865048dddee12ffc79b1f5ca4. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/USUM72300842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2707ae83ab452116d91e845514dc759a6d64811d77aa44e848e169efce747a2. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USUM72300843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd69c45090634a431f6a38c6146eb1207af222f21bf26993c5e97a13a905510f5. 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/USUM72300844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb52cd27b1023325a65e28360d808d4fafc89d66208ca1f941d491692cc35bbae. 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/USUM72300845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7af7f9d87f5bad10ae1cc21bfbe81d095b85bf5263715ff033f4eeee9a067fa3. Chain 2 (Bitcoin): anchored in block 958493 (2026-07-18T04:34:53Z), 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/USUM72300846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x420464dd2e0aa3d70d649c04725f6fc8a6240bd836070a5d7e4a6d2dd078fef9. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USUM72300847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a1a759e93e3441ee675aea355c4f1029584af6fb9d27b643d327f17c8c2491f. 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/USA2B2404163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf76bb131d8ab577291762da752766c08464199808898fe891cbad2409d5a9bd0. Chain 2 (Bitcoin): anchored in block 960218 (2026-07-30T06:57:05Z), 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/USMTD1811623.
Meds (feat. Justin Vernon, Blake Mills & Rob Moose)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3a5a5ca801c447d2c64c5f92f265bf450d742746ba8d3339646af7d73eb95f3. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZF8W1800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf86a389660258c33afae1fa5f4bece1eb617b3133050c953936d7f55db00fefc. 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/QM4DW1837699.
For the Birds: The Birdsong Project, Vol. I
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfef7013b96f6795bdcd974b850e0386c1c4e6612a82b534ca3af55d6bb4fb4a7. 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/QM4TX2274161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b9cc40e32377a6b661b4bac66715ba9f6d55ad59af8e4f5982308a5e9bbf095. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/AUWA01300251.