Brick + Mortar is an indie rock duo founded in Toms River, New Jersey in March 2008. The duo consists of frontman Brandon Asraf (bass guitar, vocals) and John Tacon (drums, electronic samples, vocals)
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 0xfb84c22dadc7bee4b8654656359bec7fc1f89181fa5828bf6d0365e9e1632a64. 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/33a577e0-83ce-467d-b511-419a72ad54af.json and https://artists.proofprofile.net/proofs/artist/33a577e0-83ce-467d-b511-419a72ad54af.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 0x5582b428f53ec712be87dd20c3af53a97115a638a91c307e1e8b345ab5174038. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USTCD1085852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa20caa7569d82b6d322b806472eb14b1bdd037f7a3f0aff1f9864b225969ec74. 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/USTCD1085854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1965234781949543f39dd33baf65adf95da2f95b9a540c41868605987ee0f80. 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/FR10S1774099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16e459f2e05883b6396c038660e1c1a3c0d3dc0c1a8f935586e35f812399dd38. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FR10S1774097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb0d230e4a38983ec4cb968de55f04eba08785e73cb94ccce34af20bcf1b6711. 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/USZZ41500301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdafd973c8deead1991a822badd99714d772a27828e0f7b56036511bc8cf52c3. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USZZ41500302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3cd8b8359f8573fdc456533889a0c9930902959ec75452c79116e13cb3b8fdf. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/USZZ41500303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fafc28f0cb25f2e61b3e1bfbaf47fba30c75ee221bf8e4b4b30394e7fff4224. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:22:58Z), 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/USZZ41500304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd845dc4e4aabd3d9d5140aed2b724df5d92426e6799cf63034819ff88ec02169. 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/USZZ41500305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3026a45954e5e81d517f7ae0355d80cb7cf3773f308517f34857338c1b8da81. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/USZZ41500306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02107911aadba57094da29f2093ac810b8e251ff04fde3859676c7e2a50d9379. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:09:04Z), 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/USZZ41500307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x620cae3de0cb8dfdb8e297384c7be6b93dcc4056a5bf54d5da9c00ff1df7c4e9. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/TCADQ1840273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8176a4fa890fd819b23217fd5ec5ff2278fc10c3f58e8993e3b78b5371cb8fde. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/TCADQ1840284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9127e3cbb0843e1c13b0cd2465dcf403b3458aed86896502dbd11c2d952e7d29. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/TCADQ1840331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a2f6b926f6f9f709e8b8f4055708180951a39780f480d63cbb37de656ddb60c. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/TCADQ1840095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6bb46b4375f55a4aa3cee258a365520789e61dbc86114c886c7b69d378c7b1d. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:11:21Z), 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/TCADQ1840241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c5add4dfa29911872f6fdc7fc8dfe699e43f2100d4f1ff9595acc8d639837ce. 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/TCADQ1840347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x698dd3aa232af173dadfc032df7d4cb8133366c6d5cdd04a2fb675d43284d7f5. 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/TCADQ1840380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5036f150f1686cba25d65f5c13f29191c6a5c599033d281f80dcf2ffb6951675. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/TCADQ1840385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c91d2426aa655b7062f1c063916150d5b404a3d48770aa7294ee43a48d1cd5a. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/TCADQ1840388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79908bd309196473e427ee091c6ff2819809b5151be0c1dd7b7e9487cb4ef3c5. 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/FR2X41976906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x820765ec4958cbec0d8cd08f9b5a8fb2c04a311a574109f6073012bbc0bd7505. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), 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/QZHN92089940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2253a0d86340ab1e6360639f21858c6114af69317ac70722abc60ef104517f4b. 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/QM24S2106114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebb3c52dff45212acdda2481be724dc72084a28e8f2abb3ef1653063dbfab3cd. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/CA5KR2236880.