Matt Hammitt (born October 19, 1979) is an American singer, songwriter, speaker and author. He was the lead singer for Sanctus Real, which has released seven studio albums with Sparrow Records, toured
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 0xb18c6da8e1826100fe2c480296522067dbaca50f836e73f0a62cb2111b0f7072. 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/3a71f999-0e66-4117-aa6c-34f57e3b446f.json and https://artists.proofprofile.net/proofs/artist/3a71f999-0e66-4117-aa6c-34f57e3b446f.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 0xe35a25e9b34dd4011365c400a42757a2fb5464bafab8091d9f0726448b99eba9. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T23:43:05Z), 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/USSP31100058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x338b5b4fa609b5657b78937d52abe0e471268874ab3023694349f20ef2c91c21. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCACS1608904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9168a66566481961934b169b22dd58dd01422c6f1d58280663ead6bb32c295c5. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/GBKPL1789179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9df99bd131c6326c7125885226061196c07a194145fa6ee9ad91c2f4d1d442b4. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/GBKPL1789180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcff5677b686cc8cbc41a45d6a8a535cde64b4a1d11c9670df926cc5a00a2c7a2. 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/GBKPL1789178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73e927f91512b5c7fe9d6766854278160bff66af809b984d26d7544cb6ca860d. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:13:15Z), 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/GBKPL1789173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cacc0f7dbf5e26a712519df1b8e790ceeba6b63546975032a3cac4caa3431fe. Chain 2 (Bitcoin): anchored in block 956485 (2026-07-03T10:53:04Z), 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/GBKPL1804261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c17c3065812bf9495d12c340fb3bd6003e7f05dfdac85cb19f731510cc830f1. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GBKPL1933366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f15e7f5aba75fe66e6f497b6d055e231553a8f46cf94c2b0322246b3b1be19e. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T11:08:52Z), 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/QMF922050145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x373ac3f5434d0be4cf42bbdf4690ced0eb071be85ef5c89f5fdf220e97769810. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/TCAGZ2387082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32d02a6e7a6f62b8394247ee25cfb3126b402bbadeaccdafe794619ffc338ef8. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZDA52450211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x973163f526b04235e33c67b40e59eb29c325968d466ce166f8bf26e980a5e37d. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/USGOT2476001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3b1b7bd8ed33cf9f3358a18c8dbc536e06599532171224ec72a97b27e9d82a7. 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/USWR61302089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadaf275c42a5b78f6882869254c3877a0349d9c141f699a2226a7326984d6bb2. 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/USWR61400221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c2ff2605c0c38202c5a1b09e4d02f42fa6341be0987270ac513d7ad17af82cd. 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/USSP31100175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdeb8bf00f73d546e3ace1ab67d158ef772db41e4de33108a01460ee311ea45b. 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/USSP30800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ebeafe7f5b8a403b662364d980cfb0787947cfdd1227f6cc216f786f3a3c5a6. 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/USEK91800001.
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